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Ding J, Zhao P, Chen H. ZnO Nanostructure-Based Flexible Pressure Sensors Deposited on Filter Paper for Wearable Application. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2025; 41:12819-12832. [PMID: 40375571 DOI: 10.1021/acs.langmuir.5c01404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2025]
Abstract
Flexible pressure sensors have broad prospects in smart wearables, healthcare, and human-computer interaction. Nevertheless, flexible pressure sensors still face numerous thorny challenges. It has become a crucial problem to skillfully design and successfully achieve flexible pressure sensors with both a high sensing range and ultrahigh sensitivity. The sensor is designed and realized with inspiration drawn from the layered microstructure of human skin, and hierarchical structure flexible pressure sensors are fabricated, where PDMS microstructures/MWCNTs act as the top electrode, filter paper/ZnO nanostructures/MWCNTs act as the intermediate active layer, and an Ag interdigitated electrode acts as the bottom electrode. The sensing performance of the sensor is investigated to develop the application of pressure sensors for human health detection in daily life, and a pressure sensor array is prepared to investigate the detection of spatial pressure distribution. Sensors based on paper and PDMS can achieve low-pressure detection (30 Pa), high sensitivity (261.38 kPa-1), fast response time (∼73.8 ms), and excellent cyclic stability (10 000 cycles). Finally, the sensor demonstrates its functionality by lighting up a small lamp, which confirms that the as-prepared pressure sensor has excellent application scenarios and is beneficial for the development of flexible electronic devices.
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Affiliation(s)
- Jijun Ding
- Shaanxi Engineering Research Centre of Oil and Gas Resource Optical Fiber Detection, Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells, School of Science, Xi'an Shiyou University, Xi'an 710065, China
| | - Pengfei Zhao
- Shaanxi Engineering Research Centre of Oil and Gas Resource Optical Fiber Detection, Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells, School of Science, Xi'an Shiyou University, Xi'an 710065, China
| | - Haixia Chen
- Shaanxi Engineering Research Centre of Oil and Gas Resource Optical Fiber Detection, Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells, School of Science, Xi'an Shiyou University, Xi'an 710065, China
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2
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Pan Y, Chen K, Liu Y, Liu Y, He M, Xie Z, Wang Z. High-Sensitivity All-Fiber Sensor Smart Gloves for Hand Perception. ACS APPLIED MATERIALS & INTERFACES 2025. [PMID: 40374328 DOI: 10.1021/acsami.5c04794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2025]
Abstract
Flexible piezoresistive sensors (FPSs) with high sensitivity and conformability are crucial for achieving fine operations in electronic gloves. In this work, a chemical grafting method is used to ensure strong interfacial bonding between the conductive phase and the flexible polyimide (PI) matrix with a high glass transition temperature (Tg). This design helps to tackle the stress relaxation and interfacial debonding problems commonly faced by FPSs. Silver fiber electrodes are prepared by in situ reduction of silver nanoparticles on PI fibers to further improve the sensitivity. This FPS is characterized by high sensitivity (214.6 kPa-1), low response time and recovery time (44 and 42 ms, respectively), outstanding recoverable performance (with a low hysteresis of 4.58% FS), and remarkable dynamic stability (a 3.6% decay of signal intensity after 24,000 cycles). An all-fiber flexible piezoresistive sensor array glove has been constructed to achieve conformal contact with the robot hand. Furthermore, comprehensive detection of multipoint pressures on the hand and high-sensitivity tactile perception for the robot hand have been achieved.
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Affiliation(s)
- Yuan Pan
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Kaifeng Chen
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yi Liu
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yuxuan Liu
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
| | - Mengting He
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
| | - Zhite Xie
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
| | - Zongrong Wang
- Huanjiang Laboratory, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province & School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
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3
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King B, Bruce N, Wagih M. Large-Area Conductor-Loaded PDMS Flexible Composites for Wireless and Chipless Electromagnetic Multiplexed Temperature Sensors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2025; 12:e2412066. [PMID: 39874204 PMCID: PMC12061244 DOI: 10.1002/advs.202412066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2024] [Revised: 12/12/2024] [Indexed: 01/30/2025]
Abstract
Capacitive dielectric temperature sensors based on polydimethylsiloxane (PDMS) loaded with 10 vol% of inexpensive, commercially-available conductive fillers including copper, graphite, and milled carbon fiber (PDMS-CF) powders are reported. The sensors are tested in the range of 20-110 °C and from 0.5 to 200 MHz, with enhanced sensitivity from 20 to 60 °C, and a relative response of 85.5% at 200 MHz for PDMS-CF capacitors. PDMS-CF capacitors are interrogated as a sensing element in wirelessly coupled chipless resonant coils tuned to 6.78 MHz with a response in the resonant frequency (fr) of the sensor, demonstrating an average sensitivity of 0.38% °C-1, a 40x improvement over a pristine PDMS capacitive sensor and outperforms state-of-the-art frequency-domain radio frequency temperature sensors. Exploiting its high sensitivity, the wireless sensing platform is interrogated using a low-cost, portable, and open-source NanoVNA demonstrating a relative response in fr of 48.5%, good agreement with instrumentation-grade vector network analyzers (VNAs) and negligible change in performance at a range of reading distances and humidities. Finally, a wireless tag is demonstrated with rapid, reversible dynamic response to changes in temperature, as well as the in the first scalable, multiplexed array of chipless sensors for spatial temperature detection.
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Affiliation(s)
- Benjamin King
- James Watt School of EngineeringUniversity of GlasgowGlasgowG12 8QQUK
| | - Nikolas Bruce
- James Watt School of EngineeringUniversity of GlasgowGlasgowG12 8QQUK
| | - Mahmoud Wagih
- James Watt School of EngineeringUniversity of GlasgowGlasgowG12 8QQUK
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4
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Wang Y, Yang H, Zha X, Chen K, Lita NS, Qu S, Yang W, Yu W, Wang Z. Bioinspired Interlocked Nanostructured Piezoresistive Composite for Monitoring of Renal Pelvic Pressure. ACS APPLIED MATERIALS & INTERFACES 2025; 17:25903-25914. [PMID: 40249919 DOI: 10.1021/acsami.4c21636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2025]
Abstract
Inspired by the structure of Setaria viridis and based on guidance of molecular dynamics simulations, a hierarchical nanospike structure on micrometer-sized coaxial fibers has been designed at the molecular scale. A piezoresistive composite membrane of in situ-grown PDA-PPy on a TPU@PES coaxial fiber has been prepared, exhibiting good anticreep performance, high sensitivity, and fast response. The matrix material is designed as coaxial fibers, which consist of an inner PES core that provides anticreep mechanical support and an outer thermoplastic polyurethane shell that offers a large specific surface area and rich graft reaction sites. The nanospike semiconductor phase constructs an interlocking structured composite by forming a multihierarchical conducting network. The piezoresistive sensor constructed with this composite exhibits ultrahigh sensitivity (27.1 kPa-1) and quick response (23.1 ms response time and 26.3 ms recovery time). Furthermore, the chemical grafting process ensures a stable interface between the semiconductor phase and matrix material by creating covalent and hydrogen bonds. This interface not only prevents instability but also demonstrates excellent signal recovery performance and dynamic stability (10,000 cycles). Monitoring changes in renal pelvic pressure with a 3D-printed artificial renal pelvis was performed, confirming its practicality for medical monitoring.
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Affiliation(s)
- Yingzhao Wang
- Huanjiang Laboratory, Zhuji, Zhejiang province 311816, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Hua Yang
- Shanghai Academy of AI for Science, Shanghai 200232, China
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, School of aeronautics and astronautics and Center for X-Mechanics, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Xin Zha
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, School of aeronautics and astronautics and Center for X-Mechanics, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Kaifeng Chen
- Huanjiang Laboratory, Zhuji, Zhejiang province 311816, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Ndeutala Selma Lita
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Shaoxing Qu
- State Key Laboratory of Fluid Power & Mechatronic System, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, School of aeronautics and astronautics and Center for X-Mechanics, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Wei Yang
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, School of aeronautics and astronautics and Center for X-Mechanics, Zhejiang University, Hangzhou, Zhejiang province 310027, China
| | - Weiwen Yu
- Urology & Nephrology Center, Department of Urology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang province 310014, China
| | - Zongrong Wang
- Huanjiang Laboratory, Zhuji, Zhejiang province 311816, China
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang province 310027, China
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, School of aeronautics and astronautics and Center for X-Mechanics, Zhejiang University, Hangzhou, Zhejiang province 310027, China
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5
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Peng Y, Sun F, Pan R. Multiplexed Sensing Textiles Enabled by Reconfigurable Weaving Meso-Structures for Intricate Kinematic Posture Recognition and Thermal Therapy Healthcare. ACS Sens 2025; 10:3051-3060. [PMID: 40176722 DOI: 10.1021/acssensors.5c00133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2025]
Abstract
Wearable sensing textiles with multimodal mechanical stimulation detection capabilities have broad applications, such as sports guidance and rehabilitation training. However, current mainstream multimodal sensing textiles typically rely on combining discrete sensors with single functions intensively through sewing or adhesion to detect various mechanical stimuli. Herein, an all-in-one multiplexed sensing textile (MPST) capable of simultaneously detecting pressure and tensile strain is achieved by engineering an innovative hierarchical architecture of textiles. The functionality of MPST is directly derived from the reconfigurable sensing pathways of the woven meso-structures, enabling it to exhibit excellent pressure sensitivity (0.1 kPa-1), wide strain detection range (0-100%), superior durability, and desirable wearability. With the assistance of the Long Short-Term Memory (LSTM) algorithm, the MPST wearable system achieves a recognition accuracy of 97.5% in human kinematic postures of the elbow, knee, and foot. In addition, MPST demonstrates outstanding joule heating performance, which reaches 57.1 °C at a 2.5 V applied voltage. With its excellent multimodal sensing performance and joule heating ability, MPST holds great potential for applications in sports training guidance, assistive rehabilitation training, and soft robotics.
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Affiliation(s)
- Yangyang Peng
- Laboratory of Textile Intelligent Manufacturing, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Fengxin Sun
- Laboratory of Soft Fibrous Materials and Physics, College of Textiles Science and Engineering, Jiangnan University, Wuxi 214122, China
| | - Ruru Pan
- Laboratory of Textile Intelligent Manufacturing, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, China
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6
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Cai S, Huang X, Luo M, Xiong D, Pang W, Wang M, Wang L, Li S, Luo P, Gao Z. High-performance ammonia sensor at room temperature based on 2D conductive MOF Cu 3(HITP) 2. Talanta 2025; 285:127226. [PMID: 39616751 DOI: 10.1016/j.talanta.2024.127226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2024] [Revised: 11/08/2024] [Accepted: 11/14/2024] [Indexed: 01/23/2025]
Abstract
Sensitive detection of ammonia in the environment is crucial due to its potential danger to human ecology and health. In gas detection technology, resistive sensors utilizing golden cross finger electrodes combined with gas-sensitive materials are commonly employed. In this study, we demonstrated a room-temperature sensor for ambient ammonia detection. The sensor is composed of two-dimensional layer-stacked metal-organic framework (MOF) Cu3(HITP)2 nanomaterials drop-coated onto gold-forked finger electrodes. Density-functional theory simulation (DFT) and sensor gas-sensitive performance testing were conducted for characterization. The sensor exhibited high sensitivity, selectivity, low detection limit, excellent reproducibility, and stability. This can be attributed to the abundant Cu active sites exposed in the hexagonal ring and layer-stacked framework structure of Cu3(HITP)2 nanomaterials. Ammonia adsorption leads to electron transfer into the Cu3(HITP)2 framework, resulting in decreased sensor resistance. Real-time monitoring of sensor resistance changes enabled quantitative analysis. Results showed a 91.4 % response of the Cu3(HITP)2 sensor to 100 ppm NH3, with response and recovery times of 26 s and 20 s, respectively. The sensor's limit of detection (LOD) was approximately 15 ppb. The sensor exhibited a relatively high response to NH3 at 25 °C, as demonstrated by dynamic gradient test curves. These findings suggest that constituting a room-temperature ammonia sensor by uniformly drop-coating Cu3(HITP)2 onto a gold-forked finger electrode is a feasible strategy.
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Affiliation(s)
- Sijin Cai
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 561113, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China.
| | - Xingpeng Huang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China
| | - Manyu Luo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China
| | - Deshou Xiong
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China
| | - Wei Pang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China
| | - Meiling Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 561113, China
| | - Li Wang
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 561113, China
| | - Shuang Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China.
| | - Peng Luo
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 561113, China.
| | - Zhixian Gao
- School of Public Health, The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 561113, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Military Medical Sciences Academy, Tianjin, 300050, China.
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7
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Yu J, Niu Q, Wu H, Wang X, Li W. A Proximity and Tactile Sensor with Visual Multiresponse. ACS APPLIED MATERIALS & INTERFACES 2025; 17:6604-6613. [PMID: 39818707 DOI: 10.1021/acsami.4c22244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2025]
Abstract
Proximity and tactile multiresponse sensing electronic skin enriches the perception dimension, which is of great significance in promoting the intelligence of electronic skin. However, achieving real-time visualization in sensors such as proximity and tactile feedback remains a challenge. A proximity and tactile sensor with visual function is designed, which can realize optical early warning and electrical recognition when the object is near, and optical display and electrical output when the object is in contact. The sensing mechanism of the visual capacitive sensor is discussed, the detection range, linearity, sensitivity, and stability of the sensor are tested, and the relationship between force, capacitance, and light intensity is established. A 5 × 5 sensor array was prepared for object proximity detection and dynamic force trajectory detection. By combining machine learning to recognize optical information and electrical information, multifunctional intelligent human-computer interactive control is realized. Visual proximity and tactile sensors not only solve the real-time visualization challenge of tactile sensing but also promote the development of electronic skin to be multidimensional, multifunctional, and intelligent.
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Affiliation(s)
- Junwen Yu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
- Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing 210023, China
| | - Quanwang Niu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
- Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing 210023, China
| | - Hao Wu
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
- Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing 210023, China
| | - Xiangfu Wang
- College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China
- Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing 210023, China
| | - Wei Li
- College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
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8
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Xiong Y, Fang Z, Li J, Li Z, Wang G. MXene/Ag-Based Zwitterionic Double-Network Hydrogels with Enhanced Mechanical Strength and Antifouling Performances. ACS APPLIED MATERIALS & INTERFACES 2025; 17:4231-4238. [PMID: 39815471 DOI: 10.1021/acsami.4c19096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2025]
Abstract
Biological fouling seriously jeopardizes the development of the marine industry. Although hydrogels, as a kind of state-of-the-art antifouling material, have received wide attention, their mechanical strength is still relatively weak, and the synergistic antifouling method is comparatively single, thus limiting the performance of hydrogels. Here, a zwitterionic sulfobetaine methacrylate (SBMA)-acrylamide (AM)/sodium alginate (SA) double-network (DN) antifouling hydrogel with superb antifouling ability and outstanding mechanical properties was prepared by grafting MXene/Ag (M/Ag) and the powerful biocide polyhexamethylene biguanide (PHMB). The prepared M/Ag has a great bactericidal effect (99.9%), and the DN-M/Ag-PHMB hydrogel demonstrates high tensile strength (5.8 MPa), remarkable antiprotein adhesion, bactericidal, and antialgal adhesion. This work proves that the DN-M/Ag-PHMB hydrogel has an exceptional antifouling ability in all three stages of biofouling formation and has a promising future as a new type of green marine antifouling material.
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Affiliation(s)
- Yangkai Xiong
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
- Aircraft Tire High Tech Innovation Center for Complex Working Conditions, Guilin 541000, China
| | - Zhiqiang Fang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Jipeng Li
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Zheng Li
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Guoqing Wang
- School of Materials Science and Engineering, Hainan University, Haikou 570228, China
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9
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Yang XY, Yuan JY, Ye Y, Yue LJ, Gong FL, Xie KF, Zhang YH. Engineering of in-plane SnS 2-SnO 2 nanosheets heterostructures for enhanced H 2S sensing. Talanta 2025; 282:127059. [PMID: 39432960 DOI: 10.1016/j.talanta.2024.127059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 09/16/2024] [Accepted: 10/15/2024] [Indexed: 10/23/2024]
Abstract
In-plane heterostructures has attracted considerable interest due to exceptional electron transport properties, high specific surface area, and abundant active sites. However, synthesis of in-plane SnS2-SnO2 heterostructures are rarely reported, and the deep investigation of the fine structure on reactivity is of great significance. Here, we propose partial in-situ oxidation strategy to construct the in-plane SnS2-SnO2 heterostructures and the surface properties, the ratio of two components can be finely tuned by precisely adjusting the treatment temperature. In particular, the SnS2-SnO2 heterostructures formed after annealing of SnS2 nanosheets at 350 °C exhibits a unique electronic structure and surface properties due to rich grain boundaries, which exhibits excellent gas sensing performance to H2S (Ra/Rg = 169.81 for 5 ppm H2S at 160 °C, fast response and recovery dynamic (41/101 s), excellent reliability (σ = 0.01) and sensing stability (φ = 0.11 %)). Notably, the in-plane heterostructures endow the material with abundant grain boundaries and effectively regulates the electronic structure of the Sn p-orbital, which facilitate the formation of active oxygen species (O-(ad)), thus contributing to the sensing performance. Our work provides a promising platform to design in-plane heterostructures for various advanced applications.
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Affiliation(s)
- Xuan-Yu Yang
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Jian-Yong Yuan
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Yang Ye
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Li-Juan Yue
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Fei-Long Gong
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Ke-Feng Xie
- College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China
| | - Yong-Hui Zhang
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China.
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10
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Chen K, Yang H, Wang A, Tang L, Zha X, Iita NS, Zhang H, Li Z, Wang X, Yang W, Qu S, Wang Z. Smart Driving Hardware Augmentation by Flexible Piezoresistive Sensor Matrices with Grafted-on Anticreep Composites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2025; 12:e2408313. [PMID: 39584792 PMCID: PMC11744520 DOI: 10.1002/advs.202408313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2024] [Revised: 10/25/2024] [Indexed: 11/26/2024]
Abstract
Signal drift and hysteresis of flexible piezoresistive sensors pose significant challenges against the widespread applications in emerging fields such as electronic skin, wearable equipment for metaverse and human-AI (artificial intelligence) interfaces. To address the creep and relaxation issues associated with pressure-sensitive materials, a highly stable piezoresistive composite is proposed, using polyamide-imide (PAI) fibers as the matrix and in situ grafted-polymerized polyaniline (PANI) as the semi-conducting layer. The PAI with large rigid fluorenylidene groups exhibits a high glass transition temperature of 372 °C (PAI 5-5), which results in an extremely long relaxation time at room temperature and consequently offers outstanding anti-creep/relaxation performances. The enhancement of PAI-PANI interfacial bonding through in situ grafting improves the sensor reliably. The sensor presents high linear sensitivity of 35.3 kPa-1 over a pressure range of 0.2-20 kPa, outstanding repeatability, and excellent dynamic stability with only a 3.8% signal deviation through ≈10 000 cycles. Real-time visualization of pressure distribution is realized by sensor matrices, which demonstrate the capability of tactile gesture recognition on both flat and curved surfaces. The recognition of sitting postures is achieved by two 12 × 12 matrices facilitated by machine learning, which prompts the potential for the augmentation of smart driving.
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Affiliation(s)
- Kaifeng Chen
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Hua Yang
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
- Shanghai Academy of AI for ScienceShanghai200232China
| | - Ang Wang
- Institute of Thermal Science and TechnologyShandong UniversityJinan250061China
| | - Linsen Tang
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Xin Zha
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Ndeutala Selma Iita
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Hong Zhang
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Zhuoxuan Li
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Xinyu Wang
- Institute of Thermal Science and TechnologyShandong UniversityJinan250061China
| | - Wei Yang
- Center for X‐MechanicsKey Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceSchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Shaoxing Qu
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
- Center for X‐MechanicsKey Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceSchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
| | - Zongrong Wang
- Huanjiang LaboratorySchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Center for X‐MechanicsKey Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceSchool of Aeronautics and AstronauticsZhejiang UniversityHangzhou310027China
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11
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Ukasi S, Pongampai S, Panigrahi BK, Panda S, Hajra S, Kim HJ, Vittayakorn N, Charoonsuk T. Continuous tremor monitoring in Parkinson's disease: A wristwatch-inspired triboelectric sensor approach. iScience 2024; 27:111480. [PMID: 39720518 PMCID: PMC11667019 DOI: 10.1016/j.isci.2024.111480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 10/23/2024] [Accepted: 11/22/2024] [Indexed: 12/26/2024] Open
Abstract
Parkinson's disease (PD) prevalence is projected to reach 12 million by 2040. Wearable sensors offer a promising approach for comfortable, continuous tremor monitoring to optimize treatment strategies. Here, we present a wristwatch-like triboelectric sensor (WW-TES) inspired by automatic watches for unobtrusive PD tremor assessment. The WW-TES utilizes a free-standing design with a surface-modified polytetrafluoroethylene (PTFE) film and a stainless-steel rotor within a biocompatible polylactic acid (PLA) package. Electrode distance is optimized to maximize the output signal. We propose and discuss the WW-TES working mechanism. The final design is validated for activities of daily living (ADLs), with varying signal amplitudes corresponding to tremor severity levels ("normal" to "severe") based on MDS-UPDRS tremor frequency. Wavelet packet transform (WPT) is employed for signal analysis during ADLs. The WW-TES demonstrates the potential for continuous tremor monitoring, offering an accurate screening of severity and comfortable, unobtrusive wearability.
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Affiliation(s)
- Sirinya Ukasi
- Department of Materials Science, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Watthana, Bangkok 10110, Thailand
- Advanced Materials Research Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Satana Pongampai
- Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
- Advanced Materials Research Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Basanta Kumar Panigrahi
- Department of Electrical Engineering, Siksha O Anusandhan University, Bhubaneswar 751030, India
| | - Swati Panda
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, South Korea
| | - Sugato Hajra
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, South Korea
| | - Hoe Joon Kim
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, South Korea
| | - Naratip Vittayakorn
- Department of Chemistry, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
- Advanced Materials Research Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
| | - Thitirat Charoonsuk
- Department of Materials Science, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Watthana, Bangkok 10110, Thailand
- Advanced Materials Research Unit, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
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12
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Sun R, Xiao P, Sun L, Guo D, Wang Y. Flexible Piezoresistive Film Pressure Sensor Based on Double-Sided Microstructure Sensing Layer. SENSORS (BASEL, SWITZERLAND) 2024; 24:8114. [PMID: 39771846 PMCID: PMC11679145 DOI: 10.3390/s24248114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2024] [Revised: 12/10/2024] [Accepted: 12/16/2024] [Indexed: 01/11/2025]
Abstract
Flexible thin-film pressure sensors have garnered significant attention due to their applications in industrial inspection and human-computer interactions. However, due to their ultra-thin structure, these sensors often exhibit lower performance, including a narrow pressure response range and low sensitivity, which constrains their further application. The most commonly used microstructure fabrication methods are challenging to apply to ultra-thin functional layers and may compromise the structural stability of the sensors. In this study, we present a novel design of a film pressure sensor with a double-sided microstructure sensing layer by adopting the template method. By incorporating the double-sided microstructures, the proposed thin-film pressure sensor can simultaneously achieve a high sensitivity value of 5.5 kPa-1 and a wide range of 140 kPa, while maintaining a short response time of 120 ms and a low detection limit. This flexible film pressure sensor demonstrates considerable potential for distributed pressure sensing and industrial pressure monitoring applications.
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Affiliation(s)
- Rong Sun
- State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China
| | - Peng Xiao
- State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China
| | - Lei Sun
- State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China
| | - Dongliang Guo
- State Grid Jiangsu Electric Power Co., Ltd., Research Institute, Nanjing 211103, China
| | - Ye Wang
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
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13
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Qin J, Tang Y, Zeng Y, Liu X, Tang D. Recent advances in flexible sensors: From sensing materials to detection modes. Trends Analyt Chem 2024; 181:118027. [DOI: 10.1016/j.trac.2024.118027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2025]
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14
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Liu Y, Zou L, Niu H, Li Z, Ren H, Zhang X, Liao H, Zhou Z, Zhang X, Huang X, Pan H, Rong S, Ma H. Graphite Phase Carbon Nitride Nanosheets-Based Fluorescent Sensors for Analysis and Detection. Crit Rev Anal Chem 2024:1-13. [PMID: 39589754 DOI: 10.1080/10408347.2024.2431222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2024]
Abstract
Fluorescent sensors reflect information such as the concentration or content of the analysis by interacting with a specific recognition group to change the signal of the fluorophore. It has attracted much attention because of its advantages of high sensitivity, fast detection speed and low cost, and it has become an effective alternative to traditional detection methods. Graphitic phase carbon nitride nanosheets (g-CNNs) are a class of carbon-based fluorescent nanomaterials derived from bulk graphite phase carbon nitride (g-C3N4), which have attracted much attention from scholars because of their advantages of low cost, simple fabrication, high quantum yield, strong stability and nontoxicity. Functional modified g-CNNs can greatly improve the photocatalytic performance. At present, although there have been some researches on fluorescent sensors based on g-CNNs. Nevertheless, there are few reviews about the g-CNNs-based fluorescent sensors. Therefore, in addition to summarizing the sensing mechanism of fluorescent sensors (such as photoinduced electron transfer, fluorescence resonance energy transfer, and intramolecular charge transfer) and the advantages and disadvantages of common signal substances, this paper focused on the application progress of g-CNNs-based fluorescent sensors in the field of analysis and detection.
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Affiliation(s)
- Yanan Liu
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Lina Zou
- Nursing School, Mudanjiang Medical University, Mudanjiang, China
| | - Huiru Niu
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Zheng Li
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Huanyu Ren
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Xiaojing Zhang
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Hao Liao
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Zhiren Zhou
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Xueqing Zhang
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Xiaojing Huang
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Hongzhi Pan
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Shengzhong Rong
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
| | - Hongkun Ma
- Public Health School, Mudanjiang Medical University, Mudanjiang, China
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15
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Haldar T, Shiu JW, Yang RX, Wang WQ, Wu HT, Mao HI, Chen CW, Yu CH. Exploring MOF-Derived CuO/rGO Heterostructures for Highly Efficient Room Temperature CO 2 Sensors. ACS Sens 2024; 9:5856-5865. [PMID: 39291653 PMCID: PMC11590104 DOI: 10.1021/acssensors.4c01397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/14/2024] [Accepted: 09/11/2024] [Indexed: 09/19/2024]
Abstract
In response to the urgent need for advanced climate change mitigation tools, this study introduces an innovative CO2 gas sensor based on p-p-type heterostructures designed for effective operation at room temperature. This sensor represents a significant step forward, utilizing the synergistic effects of p-p heterojunctions to enhance the effective interfacial area, thereby improving sensitivity. The incorporation of CuO nanoparticles and rGO sheets also optimizes gas transport channels, enhancing the sensor's performance. Our CuO/rGO heterostructures, with 5 wt % rGO, have shown a notable maximum response of 39.6-500 ppm of CO2 at 25 °C, and a low detection limit of 2 ppm, indicating their potential as high-performance, room-temperature CO2 sensors. The prepared sensor demonstrates long-term stability, maintaining 98% of its initial performance over a 30-day period when tested at 1-day intervals. Additionally, the sensor remains stable under conditions of over 40% relative humidity. Furthermore, a first-principles study provides insights into the interaction mechanisms with CO2 molecules, enhancing our understanding of the sensor's operation. This research contributes to the development of CO2 monitoring solutions, offering a practical and cost-effective approach to environmental monitoring in the context of global climate change efforts.
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Affiliation(s)
- Toton Haldar
- Department
of Engineering Science, National Cheng Kung
University, Tainan 701401, Taiwan
| | - Jia-Wei Shiu
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 106344, Taiwan
| | - Ren-Xuan Yang
- Institute
of Environmental Engineering and Management, National Taipei University of Technology, Taipei 106344, Taiwan
| | - Wei-Qi Wang
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 106344, Taiwan
| | - Hsin-Ting Wu
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 106344, Taiwan
| | - Hsu-I Mao
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 106344, Taiwan
| | - Chin-Wen Chen
- Department
of Molecular Science and Engineering, National
Taipei University of Technology, Taipei 106344, Taiwan
| | - Chi-Hua Yu
- Department
of Engineering Science, National Cheng Kung
University, Tainan 701401, Taiwan
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16
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Xie B, Ma Y, Chen Y, Wang J, Nie K, Pan S. Hydrogen bonds-pinned entanglement double network alginate hydrogel for electrical application. Int J Biol Macromol 2024; 279:135463. [PMID: 39250999 DOI: 10.1016/j.ijbiomac.2024.135463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 08/22/2024] [Accepted: 09/06/2024] [Indexed: 09/11/2024]
Abstract
In response to prevailing challenges encountered in electrical applications, including insufficient mechanical strength, subpar tensile properties, and limited adaptability to dynamic motion environments, we engineered a pioneering hydrogel adhesive. Simultaneously, we presented a novel interpretation of the application of ZnO in hydrogels. Our innovative approach entailed the intertwining of polyvinyl alcohol (PVA) and flexible sodium alginate (SA) double networks (DN) through cross-linking mechanisms, resulting in the formation of a hydrogen-bonding pinned DN hydrogel. This groundbreaking design substantially amplified the cohesive and adhesive properties of the hydrogel, while the incorporation of zinc oxide (ZnO) through modification served to enhance its electrical conductivity. Our hydrogel sensor demonstrated exceptional capabilities in monitoring human motion, adeptly meeting the demands of diverse motion scenarios. Furthermore, meticulous consideration had been given to the influence of perspiration on sensor performance, rendering our sensor exceptionally well-suited for real-world applications.
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Affiliation(s)
- Bochao Xie
- School of Engineering & Applied Science, Yale University, New Haven 06250, USA; International Engineering College, Xi'an University of Technology, Xi'an 710048, China
| | - Yingying Ma
- School of Engineering & Applied Science, Yale University, New Haven 06250, USA; SDU-ANU Joint Science College, Shandong University, Weihai 264209, China.
| | - Yusen Chen
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Jiale Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; School of Mathematics, Northwest University, Xi'an 710127, China
| | - Kecheng Nie
- College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
| | - Shuhan Pan
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China.
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17
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Jiang Y, Fan L, Sun X, Luo Z, Wang H, Lai R, Wang J, Gan Q, Li N, Tian J. A Multifunctional Tactile Sensory System for Robotic Intelligent Identification and Manipulation Perception. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402705. [PMID: 39248290 PMCID: PMC11538698 DOI: 10.1002/advs.202402705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 08/03/2024] [Indexed: 09/10/2024]
Abstract
Humans recognize and manipulate objects relying on the multidimensional force features captured by the tactile sense of skin during the manipulation. Since the current sensors integrated in robots cannot support the robots to sense the multiple interaction states between manipulator and objects, achieving human-like perception and analytical capabilities remains a major challenge for service robots. Prompted by the tactile perception involved in robots performing complex tasks, a multimodal tactile sensory system is presented to provide in situ simultaneous sensing for robots when approaching, touching, and manipulating objects. The system comprises a capacitive sensor owning the high sensitivity of 1.11E-2 pF mm-1, a triboelectricity nanogenerator with the fast response speed of 30 ms, and a pressure sensor array capable of 3D force detection. By Combining transfer learning models, which fuses multimodal tactile information to achieve high-precision (up to 95%) recognition of the multi-featured targets such as random hardness and texture information under random sampling conditions, including random grasp force and velocity. This sensory system is expected to enhance the intelligent recognition and behavior-planning capabilities of autonomous robots when performing complex tasks in undefined surrounding environments.
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Affiliation(s)
- Yue Jiang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China
- College of Computer Science and Software EngineeringShenzhen UniversityShenzhen518060China
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Lin Fan
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China
| | - Xilong Sun
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Zehe Luo
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Herong Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China
| | - Rucong Lai
- Institute of Applied Physics and Materials EngineeringUniversity of MacauMacao999078China
| | - Jie Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Qiyang Gan
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Ning Li
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
| | - Jindong Tian
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (Shenzhen)Shenzhen UniversityShenzhen518132China
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18
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Di X, Li L, Jin Q, Yang R, Li Y, Wang X, Wu G, Yuan C. Highly Sensitive, Degradable, and Rapid Self-Healing Hydrogel Sensor with Semi-Interpenetrating Network for Recognition of Micro-Expressions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2403955. [PMID: 39167262 DOI: 10.1002/smll.202403955] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/04/2024] [Indexed: 08/23/2024]
Abstract
Flexible conductive hydrogels have revolutionized the lives and are widely applied in health monitoring and wearable electronics as a new generation of sensing materials. However, the inherent low mechanical strength, sensitivity, and lack of rapid self-healing capacity results in their short life, poor detection accuracy, and environmental pollution. Inspired by the molecular structure of bone and its chemical characteristics, a novel fully physically cross-linked conductive hydrogel is fabricated by the introduction of nanohydroxyapatite (HAp) as the dynamic junction points. In detail, the dynamically cross-linked network, including multiple physical interactions, provides it with rapid self-healing ability and excellent mechanical properties (elongation at break (>1200%), tensile strength (174kPa), and resilience (92.61%)). Besides, the ions (Cl-, Li+, Ca2+) that move freely within the system impart outstanding electrical conductivity (2.46 ± 0.15 S m-1), high sensitivity (gauge factor, GF>8), good antifreeze (-40.2 °C), and humidity properties. The assembled sensor can be employed to sensitively detect various large human motions and subtle changes in behavior (facial expressions, speech recognition). Meanwhile, the hydrogel sensor can also degrade in phosphate-buffered saline solution without causing any environmental pollution. Therefore, the designed hydrogels may become a promising candidate material in the future potential applications for smart wearable sensors and electronic skin.
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Affiliation(s)
- Xiang Di
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, P. R. China
| | - Liqi Li
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, P. R. China
| | - Qi Jin
- Department of Polymer Science and Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Ran Yang
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, P. R. China
| | - Yuan Li
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, P. R. China
| | - Xiaoliang Wang
- Department of Polymer Science and Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Guolin Wu
- Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Chungang Yuan
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071000, P. R. China
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19
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Yan G, Dang D, Chang S, Zhang X, Zhang J, Wang Z. Vacuum Filtration-Coated Silver Electrodes Coupled with Stacked Conductive Multi-Walled Carbon Nanotubes/Mulberry Paper Sensing Layers for a Highly Sensitive and Wide-Range Flexible Pressure Sensor. MICROMACHINES 2024; 15:1306. [PMID: 39597118 PMCID: PMC11596462 DOI: 10.3390/mi15111306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2024] [Revised: 10/22/2024] [Accepted: 10/25/2024] [Indexed: 11/29/2024]
Abstract
Flexible pressure sensors based on paper have attracted considerable attention owing to their good performance, low cost, and environmental friendliness. However, effectively expanding the detection range of paper-based sensors with high sensitivities is still a challenge. Herein, we present a paper-based resistive pressure sensor with a sandwich structure consisting of two electrodes and three sensing layers. The silver nanowires were dispersed deposited on a filter paper substrate using the vacuum filtration coating method to prepare the electrode. And the sensing layer was fabricated by coating carbon nanotubes onto a mulberry paper substrate. Waterborne polyurethane was introduced in the process of preparing the sensing layers to enhance the strength of the interface between the carbon nanotubes and the mulberry paper substrate. Therefore, the designed sensor exhibits a good sensing performance by virtue of the rational structure design and proper material selection. Specifically, the rough surfaces of the sensing layers, porous conductive network of silver nanowires on the electrodes, and the multilayer stacked structure of the sensor collaboratively increase the change in the surface contact area under a pressure load, which improves the sensitivity and extends the sensing range simultaneously. Consequently, the designed sensor exhibits a high sensitivity (up to 6.26 kPa-1), wide measurement range (1000 kPa), low detection limit (~1 Pa), and excellent stability (1000 cycles). All these advantages guarantee that the sensor has potential for applications in smart wearable devices and the Internet of Things.
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Affiliation(s)
- Guanhai Yan
- School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
| | - Dongrui Dang
- School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
| | - Sheng Chang
- School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
| | - Xuefeng Zhang
- Shaanxi Key Laboratory of Nano-Materials and Technology, Xi’an University of Architecture and Technology, Xi’an 710055, China
| | - Jinhua Zhang
- School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
| | - Zhengdong Wang
- Shaanxi Key Laboratory of Nano-Materials and Technology, Xi’an University of Architecture and Technology, Xi’an 710055, China
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20
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Ming W, Zhao Y, Zhang Z, Qiu W, Xu Y, Guo X, Zhang G. Self-Powered Handwritten Letter Recognition Based on a Masked Triboelectric Nanogenerator for Intelligent Personal Protective Equipment. ACS APPLIED MATERIALS & INTERFACES 2024; 16:57936-57945. [PMID: 39383117 DOI: 10.1021/acsami.4c14677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2024]
Abstract
As one of the most important ways of human-machine interfaces, the touchpad has excellent input convenience. Input devices for extreme environments require simpler structures and diverse inputs to ensure information inputs. This paper proposed a self-powered flexible input panel with single-channel output for the input recognition of all 26 letters, and a paper mask was implemented to cover the triboelectric nanogenerator (TENG) board and obtain more complicated electrical signal features. Based on the change of the triboelectric output of the mask, neural network models with different combinations of layers were designed and optimized, and the highest recognition rate of 88.7% for all letters and 100% recognition accuracy for some letters were achieved among the five testers. For letters with low recognition rates, a specific writing specification was further proposed to improve the accuracy of model recognition. These results facilitate the application of the proposed input panel as a flexible wearable device and personal protective equipment for extreme environments including chemical, biological, radiological, nuclear (CBRN) scenarios or aerospace.
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Affiliation(s)
- Wuyi Ming
- Henan Provincial Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
| | - Yangjing Zhao
- Henan Provincial Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
| | - Zhen Zhang
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Wenzhe Qiu
- School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Yingjie Xu
- Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment, Guangdong HUST Industrial Technology Research Institute, Dongguan 523808, P.R. China
| | - Xudong Guo
- Henan Provincial Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, P.R. China
- Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment, Guangdong HUST Industrial Technology Research Institute, Dongguan 523808, P.R. China
| | - Guojun Zhang
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
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21
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Kumar A, Kumari P, Senthil Kumar M, Gupta G, Shivagan DD, Bapna K. A high-performance flexible humidity sensor based on a TiO 2-MWCNT nanocomposite for human healthcare applications. Phys Chem Chem Phys 2024; 26:21186-21196. [PMID: 39072697 DOI: 10.1039/d4cp01148a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
The present work shows the improved humidity sensing characteristics of TiO2 nanoparticles in the form of a nanocomposite with multiwalled carbon nanotubes (MWCNTs) prepared by a hydration-dehydration method. The structural and morphological characterizations of TiO2-MWCNTs confirm the nanocomposite formation without any other impurities and with an improved surface area. The pure TiO2 and nanocomposite films are deposited on IDE coated flexible poly-ethylene terephthalate (PET) substrates by a drop casting method. The nanocomposite shows improved sensitivity (1246.2 MΩ/%RH) and an ultrafast response/recovery time (2 s/1 s) with a minimal hysteresis of 0.27%RH. Further, the flexible nanocomposite sensor is tested for human healthcare applications including respiratory monitoring, apnea like situations, and skin moisture detection. The sensor can distinguish different breath patterns like normal, fast, deep and apnea like situations significantly. Skin moisture detection can also be performed using the nanocomposite sensor in a non-invasive manner. Overall, this study represents an environmentally friendly, easy to fabricate, flexible TiO2-MWCNT nanocomposite based improved humidity sensor for application in human healthcare and wearable devices.
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Affiliation(s)
- Ankit Kumar
- Temperature and Humidity Metrology, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India.
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Parvesh Kumari
- Temperature and Humidity Metrology, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India.
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - M Senthil Kumar
- Sensor Devices and Metrology, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gaurav Gupta
- Temperature and Humidity Metrology, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India.
| | - D D Shivagan
- Temperature and Humidity Metrology, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India.
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Komal Bapna
- Temperature and Humidity Metrology, CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India.
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad-201002, India
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22
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Sun X, Yuan J, Zhu Q, Sun Y, Chen H, Liao S, Yan J, Cai J, Wei Y, Luo L. Wood Fiber-Based Triboelectric Material with High Filtration Efficiency and Antibacterial Properties and Its Respiratory Monitoring in Mask. ACS OMEGA 2024; 9:33643-33651. [PMID: 39130594 PMCID: PMC11308075 DOI: 10.1021/acsomega.4c01906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 08/13/2024]
Abstract
Self-powered wearable electronic products have rapidly advanced in the fields of sensing and health monitoring, presenting greater challenges for triboelectric materials. The limited surface polarity and structural defects in wood fibers restrict their potential as substitutes for petroleum-based materials. This study used bagasse fiber as the raw material and explored various methods, including functionalizing cellulose nanofibrils (CNFs) with polydopamine (PDA), in situ embedding of silver particles, filtration, and freeze-drying. These methods aimed to enhance the triboelectric output, antibacterial properties, and filtration properties of lignocellulosic materials. The Ag/PDA/CNF-based triboelectric nanogenerator (TENG) demonstrated an open-circuit voltage of 211 V and a short-circuit current of 18.1 μA. An aerogel prepared by freeze-drying the Ag/PDA/CNF material, combined with a polyvinylidene fluoride nanofiber structure fabricated by electrospinning, constitutes the TENG unit. A self-powered respiratory detection mask was created using this combination, achieving a filtration efficiency of 94.23% for 0.3 μm particles and an antibacterial rate exceeding 99%. In addition, it effectively responded to respiratory frequency signals of slow breathing, normal breathing, and shortness of breath, with the output electrical signal correlating with the respiratory frequency. This study considerably contributes to advancing wood fiber-based triboelectric materials as alternatives to petroleum-derived materials in self-powered wearable electronic products for medical applications.
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Affiliation(s)
- Xiaoping Sun
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Juan Yuan
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Qiuxiao Zhu
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yanfen Sun
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Haoqiu Chen
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Shuangli Liao
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Jiaxuan Yan
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Jiecheng Cai
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yuhe Wei
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
| | - Lianxin Luo
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control,
School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Industrial
and Food Engineering, Guangxi University, Nanning 530004, China
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23
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Patil S, Babar BM, Nadargi DY, Shaikh FI, Nadargi JD, Sankapal BR, Mulla IS, Tamboli MS, Nguyen Truong NT, Suryavanshi SS. La-Fe-O Perovskite Based Gas Sensors: Recent Advances and Future Challenges. ACS OMEGA 2024; 9:29994-30014. [PMID: 39035948 PMCID: PMC11256118 DOI: 10.1021/acsomega.4c00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 05/18/2024] [Accepted: 05/29/2024] [Indexed: 07/23/2024]
Abstract
Interest in the importance of gas sensing devices has increased significantly due to their critical function in monitoring the environment and controlling pollution, resulting in an increased market demand. The present review explores perovskite La-Fe-O based gas sensors with a special focus on LaFeO3 and evaluates their sensitivity to a diverse range of practical target gases that need to be monitored. An analysis has been conducted to assess different routes not only of synthesizing LaFeO3 material but also of characterization with the targeted use for their gas sensing abilities. Additionally, a comprehensive analysis has been performed to explore the effect of introducing other elements through doping. In view of the LaFeO3 sensing performance, more common gases like acetone, ethanol, methanol, formaldehyde, NO x , and CO2 have been targeted. In addition, a discussion on uncommon gases such as CO, SO2, TEA, C2H5, C6H6, and others is also made to give a complete picture of LaFeO3-based gas sensors. The summary and conclusion section of the study addresses the primary obstacles in the synthesis process, the variables that restrict the sensing capabilities of LaFeO3, and its commercial fulfillment.
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Affiliation(s)
- Suraj
S. Patil
- School
of Physical Sciences, PAH Solapur University, Solapur 413255, India
- Department
of Physics, Yashavantrao Chavan Institute
of Science, Satara 415001, India
| | - Bapuso M. Babar
- Department
of Physics, Yashavantrao Chavan Institute
of Science, Satara 415001, India
| | - Digambar Y. Nadargi
- Centre
for Materials for Electronics Technology, CMET, Thrissur 680581, India
| | - Faiyyaj I. Shaikh
- Department
of Forensic Physics, Government Institute
of Forensic Science, Aurangabad 431004, India
| | - Jyoti D. Nadargi
- Department
of Physics, Santosh Bhimrao Patil College, Mandrup, Solapur 413221, India
| | - Babasaheb R. Sankapal
- Department
of Physics, Visvesvaraya National Institute
of Technology, Nagpur 440010, India
| | | | - Mohaseen S. Tamboli
- Korea Institute
of Energy Technology (KENTECH), 21 KENTECH-gil, Naju, Jeollanam-do 58330, Republic of Korea
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24
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Li X, Wang P, Xie K, Zhang C, Liu X, Lin L. Adsorption of LIBs Thermal Runaway Gases on TM-Decorated HfS 2 Surface: A DFT Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14099-14109. [PMID: 38920408 DOI: 10.1021/acs.langmuir.4c01566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
With the wide application of lithium-ion batteries (LIBs) in different fields, safety accidents occur frequently. Therefore, it is necessary to monitor the thermal runaway gas for an early warning. In this article, the adsorption properties of the characteristic gases of LIBs thermal runaway gases are studied by density functional theory (DFT). The adsorption structure of TM (Co/Rh/Ir)-decorated HfS2 (TM@HfS2) is established, and its adsorption properties for C2H4, CH4, and CO are studied. The adsorption energy, charge transfer, band, DOS, charge difference density, work function, and recovery time are discussed in detail. The results show that Ir@HfS2 has the strongest adsorption performance for C2H4 and CO, so C2H4 and CO can be stably adsorbed on the surface of the Ir@HfS2 monolayer. The adsorption energy of CH4 on Co@HfS2 is stronger than those of Rh@HfS2 and Ir@HfS2, but the adsorption energy is still very small. By applying biaxial strain to Co@HfS2, we found that the adsorption energy increases with the increase in negative strain. This study provides a theoretical basis for the regulation of the adsorption properties of HfS2 by different transition metals.
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Affiliation(s)
- Xinchun Li
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Pengtao Wang
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Kun Xie
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Chao Zhang
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Xiao Liu
- School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Long Lin
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
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25
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Wang L, Song J, Yu C. MgAl-LDH nanoflowers as a novel sensing material for high-performance humidity sensing. RSC Adv 2024; 14:21991-21998. [PMID: 38993504 PMCID: PMC11238630 DOI: 10.1039/d4ra03800b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 07/03/2024] [Indexed: 07/13/2024] Open
Abstract
This work details a novel application of MgAl-LDH nanoflowers, applied in the fabrication of humidity sensors using quartz crystal microbalance (QCM). An oscillating circuit approach has been utilized to thoroughly investigate the humidity detection characteristics of QCM sensors that are fabricated using MgAl-LDH nanoflowers. The examination encompassed various parameters such as the sensors' response, humidity hysteresis, repeatability, and stability. Experimental results clearly indicate that these MgAl-LDH nanoflower-based QCM sensors exhibit a distinct logarithmic frequency response to varying moisture levels. Notably, the sensitivity of the sensors is intricately tied to the amount of MgAl-LDH nanoflowers utilized during the deposition process. Moreover, these sensors maintain remarkable stability across a wide humidity range spanning from 11% to 97% RH. Additionally, the MgAl-LDH nanoflower-based QCM sensors possess minimal humidity hysteresis and display swift dynamic response and recovery periods, further highlighting their potential for humidity detection applications.
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Affiliation(s)
- Luyu Wang
- College of Artificial Intelligence and E-Commerce, Zhejiang Gongshang University Hangzhou College of Commerce Hangzhou 311599 China
| | - Jia Song
- School of Nuclear Science and Engineering, Shanghai Jiao Tong University Shanghai 200240 China
| | - Chunyang Yu
- Design-AI Laboratory, China Academy of Art Hangzhou 310009 China
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26
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Zheng Z, Yang Q, Song S, Pan Y, Xue H, Li J. Anti-Oxidized Self-Assembly of Multilayered F-Mene/MXene/TPU Composite with Improved Environmental Stability and Pressure Sensing Performances. Polymers (Basel) 2024; 16:1337. [PMID: 38794530 PMCID: PMC11125229 DOI: 10.3390/polym16101337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/03/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
MXenes, as emerging 2D sensing materials for next-generation electronics, have attracted tremendous attention owing to their extraordinary electrical conductivity, mechanical strength, and flexibility. However, challenges remain due to the weak stability in the oxygen environment and nonnegligible aggregation of layered MXenes, which severely affect the durability and sensing performances of the corresponding MXene-based pressure sensors, respectively. Here, in this work, we propose an easy-to-fabricate self-assembly strategy to prepare multilayered MXene composite films, where the first layer MXene is hydrogen-bond self-assembled on the electrospun thermoplastic urethane (TPU) fibers surface and the anti-oxidized functionalized-MXene (f-MXene) is subsequently adhered on the MXene layer by spontaneous electrostatic attraction. Remarkably, the f-MXene surface is functionalized with silanization reagents to form a hydrophobic protective layer, thus preventing the oxidation of the MXene-based pressure sensor during service. Simultaneously, the electrostatic self-assembled MXene and f-MXene successfully avoid the invalid stacking of MXene, leading to an improved pressure sensitivity. Moreover, the adopted electrospinning method can facilitate cyclic self-assembly and the formation of a hierarchical micro-nano porous structure of the multilayered f-MXene/MXene/TPU (M-fM2T) composite. The gradient pores can generate changes in the conductive pathways within a wide loading range, broadening the pressure detection range of the as-proposed multilayered f-MXene/MXene/TPU piezoresistive sensor (M-fM2TPS). Experimentally, these novel features endow our M-fM2TPS with an outstanding maximum sensitivity of 40.31 kPa-1 and an extensive sensing range of up to 120 kPa. Additionally, our M-fM2TPS exhibits excellent anti-oxidized properties for environmental stability and mechanical reliability for long-term use, which shows only ~0.8% fractional resistance changes after being placed in a natural environment for over 30 days and provides a reproducible loading-unloading pressure measurement for more than 1000 cycles. As a proof of concept, the M-fM2TPS is deployed to monitor human movements and radial artery pulse. Our anti-oxidized self-assembly strategy of multilayered MXene is expected to guide the future investigation of MXene-based advanced sensors with commercial values.
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Affiliation(s)
| | | | | | | | | | - Jing Li
- Hubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China; (Z.Z.); (Q.Y.); (S.S.); (Y.P.); (H.X.)
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27
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Kumar S, Hojamberdiev M, Chakraborty A, Mitra R, Chaurasiya R, Kwoka M, Tiwary CS, Biswas K, Kumar M. Quasicrystal Nanosheet/α-Fe 2O 3 Heterostructure-Based Low Power NO 2 Sensors: Experimental and DFT Studies. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16687-16698. [PMID: 38517362 DOI: 10.1021/acsami.4c00201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Industrial emissions, environmental monitoring, and medical fields have put forward huge demands for high-performance and low power consumption sensors. Two-dimensional quasicrystal (2D QC) nanosheets of metallic multicomponent Al70Co10Fe5Ni10Cu5 have emerged as a promising material for gas sensors due to their excellent catalytic and electronic properties. Herein, we demonstrate highly sensitive and selective NO2 sensors developed by low-cost and scalable fabrication techniques using 2D QC nanosheets and α-Fe2O3 nanoparticles. The sensitivity (ΔR/R%) of the optimal amount of 2D QC nanosheet-loaded α-Fe2O3 sensor was 32%, which is significantly larger about 3.5 times than bare α-Fe2O3 sensors for 1 ppm of NO2 at 150 °C operating temperature. The sensors exhibited p-type conduction, and resistance was reduced when exposed to NO2, an oxidizing gas. The enhanced sensing characteristics are a result of the formation of nanoheterojunctions between 2D QC and α-Fe2O3, which improved the charge transport and provided a large sensing signal. In addition, the heterojunction sensor demonstrated excellent NO2 selectivity over other oxidizing and reducing gases. Furthermore, density functional theory calculation examines the adsorption energy and charge transfer between NO2 molecules on the α-Fe2O3(110) and QC/α-Fe2O3(110) heterostructure surfaces, which coincides well with the experimental results.
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Affiliation(s)
- Sumit Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
| | - Mirabbos Hojamberdiev
- Institut für Chemie, Technische Universität Berlin, Straße des 17, Juni 135, Berlin 10623, Germany
| | - Anyesha Chakraborty
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rahul Mitra
- Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Rajneesh Chaurasiya
- Department of Electronics and Communication Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai 601103, India
| | - Monika Kwoka
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Chandra Sekhar Tiwary
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Krishanu Biswas
- Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342030, India
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
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