1
|
Zhao L, Chang Z, Guo B, Lu Y, Lu X, Ren Q, Lv A, Nie J, Ji D, Rotenberg MY, Wang B, Zhang Y, Fang Y. Robust, stretchable bioelectronic interfaces for cardiac pacing enabled by interfacial transfer of laser-induced graphene via water-response, nonswellable PVA gels. Biosens Bioelectron 2024; 261:116453. [PMID: 38850739 DOI: 10.1016/j.bios.2024.116453] [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: 03/01/2024] [Revised: 05/19/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024]
Abstract
Implantable cardiac pacemakers are crucial therapeutic tools for managing various cardiac conditions. For effective pacing, electrodes should exhibit flexibility, deformability, biocompatibility, and high conductivity/capacitance. Laser-induced graphene (LIG) shows promise due to its exceptional electrical and electrochemical properties. However, the fragility of LIG and the non-stretchability of polyimide substrates pose challenges when interfacing with the beating heart. Here, we present a simple method for fabricating robust, flexible, and stretchable bioelectronic interfaces by transferring LIG via water-responsive, nonswellable polyvinyl alcohol (PVA) gels. PVA solution penetrates the porous structure of LIG and solidifies into PVA xerogel as the solvent evaporates. The robust PVA xerogel enables the smooth transfer of LIG and prevents stretching of the LIG network during this process, which helps maintain its conductivity. When hydrated, the xerogel becomes a stable, nonswellable hydrogel. This gives the LIG-PVA hydrogel (LIG-PVA-H) composites with excellent conductivity (119.7 ± 4.3Ω sq-1), high stretchability (up to 420%), reliability (cyclic stretch under 15% strain, with ∼ 1-time resistance increase), and good stability in phosphate buffered saline. The LIG-PVA-H composites were used as biointerfaces for electrocardiogram signal recording and electrical pacing on rat hearts ex vivo and in vivo, using commercial setups and a custom-built implantable wireless device. This work expands the application of LIG in bioelectronic interfaces and facilitates the development of electrotherapy for cardiac diseases.
Collapse
Affiliation(s)
- Lei Zhao
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Zhiqiang Chang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Bihan Guo
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Yuhan Lu
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Xinxin Lu
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Qinjuan Ren
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Ailin Lv
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Jianfang Nie
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Daizong Ji
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Menahem Y Rotenberg
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Bingfang Wang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Ya Zhang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China
| | - Yin Fang
- Research Center for Translational Medicine, Medical Innovation Center and State Key Laboratory of Cardiology, Shanghai East Hospital; The Institute for Biomedical Engineering & Nano Science, Tongji University School of Medicine, Shanghai 200120, China.
| |
Collapse
|
2
|
Li Y, Li Y, Wu S, Wu X, Shu J. Laser-Scribed Graphene for Human Health Monitoring: From Biophysical Sensing to Biochemical Sensing. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:942. [PMID: 38869567 PMCID: PMC11173585 DOI: 10.3390/nano14110942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/16/2024] [Accepted: 05/24/2024] [Indexed: 06/14/2024]
Abstract
Laser-scribed graphene (LSG), a classic three-dimensional porous carbon nanomaterial, is directly fabricated by laser irradiation of substrate materials. Benefiting from its excellent electrical and mechanical properties, along with flexible and simple preparation process, LSG has played a significant role in the field of flexible sensors. This review provides an overview of the critical factors in fabrication, and methods for enhancing the functionality of LSG. It also highlights progress and trends in LSG-based sensors for monitoring physiological indicators, with an emphasis on device fabrication, signal transduction, and sensing characteristics. Finally, we offer insights into the current challenges and future prospects of LSG-based sensors for health monitoring and disease diagnosis.
Collapse
Affiliation(s)
- Yakang Li
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China
| | - Yaxin Li
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China
| | - Sirui Wu
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China
| | - Xuewen Wu
- Department of Chemical Engineering, School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Jian Shu
- Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
3
|
Kumar N, Lee SY, Park SJ. Recent Progress and Challenges in Paper-Based Microsupercapacitors for Flexible Electronics: A Comprehensive Review. ACS APPLIED MATERIALS & INTERFACES 2024; 16:21367-21382. [PMID: 38631339 DOI: 10.1021/acsami.4c01438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Recent advances in paper-based microsupercapacitors (p-MSCs) have attracted significant attention due to their potential as substrates for flexible electronics. This review summarizes progress in the field of p-MSCs, discussing their challenges and prospects. It covers various aspects, including the fundamental characteristics of paper, the modification of paper with functional materials, and different methods for device fabrication. The review critically analyzes recent advancements, materials, and fabrication techniques for p-MSCs, exploring their potential applications and benefits, such as flexibility, cost-effectiveness, and sustainability. Additionally, this review highlights gaps in current research, guiding future investigations and innovations in the field. It provides an overview of the current state of p-MSCs and offers valuable insights for researchers and professionals in the field. The critical analysis and discussion presented herein offer a roadmap for the future development of p-MSCs and their potential impact on the domain of flexible electronics.
Collapse
Affiliation(s)
- Niraj Kumar
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| | - Seul-Yi Lee
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| | - Soo-Jin Park
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| |
Collapse
|
4
|
Song H, Nie B, Zhu Y, Qi G, Zhang Y, Peng W, Li X, Shao J, Wei R. Flexible Grid Graphene Electrothermal Films for Real-Time Monitoring Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6940-6948. [PMID: 38507744 DOI: 10.1021/acs.langmuir.3c03975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Flexible electrothermal films are crucial for protecting equipment and systems in cold weather, such as ice blockages in natural gas pipelines and icing on aircraft wings. Therefore, a flexible electric heater is one of the essential devices in industrial operations. One of the main challenges is to develop flexible electrothermal films with low operating voltage, high steady-state temperature, and good mechanical stability. In this study, a flexible electrothermal film based on graphene-patterned structures was manufactured by combining the laser induction method and the transfer printing process. The grid structure design provides accurate real-time monitoring for the application of electrothermal films and shows potential in solving problems related to deicing and clearing ice blockages in pipelines. The flexible electrothermal film can reach a high heating temperature of 165 °C at 15 V and exhibits sufficient heating stability. By employing a simple and efficient method to create a flexible, high-performance electrothermal film, we provide a reliable solution for deicing and monitoring applications.
Collapse
Affiliation(s)
- Huiqian Song
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Bangbang Nie
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Yihong Zhu
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Guochen Qi
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Yudong Zhang
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Wei Peng
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, Zhengzhou University, Zhengzhou 450001, China
| | - Xiangming Li
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jinyou Shao
- Micro- and Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Ronghan Wei
- School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China
- Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, Zhengzhou University, Zhengzhou 450001, China
- Industrial Technology Research Institute, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
5
|
Pinheiro T, Morais M, Silvestre S, Carlos E, Coelho J, Almeida HV, Barquinha P, Fortunato E, Martins R. Direct Laser Writing: From Materials Synthesis and Conversion to Electronic Device Processing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2402014. [PMID: 38551106 DOI: 10.1002/adma.202402014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/18/2024] [Indexed: 04/25/2024]
Abstract
Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning and assembly of functional geometries in several fields of application, of which electronics stand out. In this review, recent advances and strategies based on DLW for electronics microfabrication are surveyed and outlined, based on laser material growth strategies. First, the main DLW parameters influencing material synthesis and transformation mechanisms are summarized, aimed at selective, tailored writing of conductive and semiconducting materials. Additive and transformative DLW processing mechanisms are discussed, to open space to explore several categories of materials directly synthesized or transformed for electronics microfabrication. These include metallic conductors, metal oxides, transition metal chalcogenides and carbides, laser-induced graphene, and their mixtures. By accessing a wide range of material types, DLW-based electronic applications are explored, including processing components, energy harvesting and storage, sensing, and bioelectronics. The expanded capability of lasers to participate in multiple fabrication steps at different implementation levels, from material engineering to device processing, indicates their future applicability to next-generation electronics, where more accessible, green microfabrication approaches integrate lasers as comprehensive tools.
Collapse
Affiliation(s)
- Tomás Pinheiro
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Maria Morais
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Sara Silvestre
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Emanuel Carlos
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - João Coelho
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Henrique V Almeida
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Pedro Barquinha
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Elvira Fortunato
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Rodrigo Martins
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| |
Collapse
|
6
|
Song R, Zhang J, Yang G, Wu Y, Yu J, Zhu H. A Non-Disposable Electrochemical Sensor Based on Laser-Synthesized Pd/LIG Nanocomposite-Modified Screen-Printed Electrodes for the Detection of H 2O 2. SENSORS (BASEL, SWITZERLAND) 2024; 24:2043. [PMID: 38610254 PMCID: PMC11014152 DOI: 10.3390/s24072043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024]
Abstract
There have been many studies on the significant correlation between the hydrogen peroxide content of different tissues or cells in the human body and the risk of disease, so the preparation of biosensors for detecting hydrogen peroxide concentration has been a hot topic for researchers. In this paper, palladium nanoparticles (PdNPs) and laser-induced graphene (LIG) were prepared by liquid-phase pulsed laser ablation and laser-induced technology, respectively. The complexes were prepared by stirring and used for the modification of screen-printed electrodes to develop a non-enzymatic hydrogen peroxide biosensor that is low cost and mass preparable. The PdNPs prepared with anhydrous ethanol as a solvent have a uniform particle size distribution. The LIG prepared by laser direct writing has good electrical conductivity, and its loose porous structure provides more adsorption sites. The electrochemical properties of the modified electrode were characterized by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. Compared with bare screen-printed electrodes, the modified electrodes are more sensitive for the detection of hydrogen peroxide. The sensor has a linear response range of 5 µM-0.9 mM and 0.9 mM-5 mM. The limit of detection is 0.37 µM. The above conclusions indicate that the hydrogen peroxide electrochemical biosensor prepared in this paper has great advantages and potential in electrochemical catalysis.
Collapse
Affiliation(s)
- Ruijie Song
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Jianwei Zhang
- Department of the School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China;
| | - Ge Yang
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Yu Wu
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Jun Yu
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Huichao Zhu
- Department of the School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China;
| |
Collapse
|
7
|
de Lima LF, Barbosa PP, Simeoni CL, de Paula RFDO, Proenca-Modena JL, de Araujo WR. Electrochemical Paper-Based Nanobiosensor for Rapid and Sensitive Detection of Monkeypox Virus. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58079-58091. [PMID: 38063784 DOI: 10.1021/acsami.3c10730] [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: 12/22/2023]
Abstract
Monkeypox virus (MPXV) infection was classified as a public health emergency of international concern by the World Health Organization (WHO) in 2022, being transmitted between humans by large respiratory droplets, in contact with skin lesions, fomites, and sexually. Currently, there are no available accessible and simple-to-use diagnostic tests that accurately detect MPXV antigens for decentralized and frequent testing. Here, we report an electrochemical biosensor to detect MPXV antigens in saliva and plasma samples within 15 min using accessible materials. The electrochemical system was manufactured onto a paper substrate engraved by a CO2 laser machine, modified with gold nanostructures (AuNS) and a monoclonal antibody, enabling sensitive detection of A29 viral protein. The diagnostic test is based on the use of electrochemical impedance spectroscopy (EIS) and can be run by a miniaturized potentiostat connected to a smartphone. The impedimetric biosensing method presented excellent analytical parameters, enabling the detection of A29 glycoprotein in the concentration ranging from 1 × 10-14 to 1 × 10-7 g mL-1, with a limit of detection (LOD) of 3.0 × 10-16 g mL-1. Furthermore, it enabled the detection of MPXV antigens in the concentration ranging from 1 × 10-1 to 1 × 104 PFU mL-1, with an LOD of 7.8 × 10-3 PFU mL-1. Importantly, no cross-reactivity was observed when our device was tested in the presence of other poxvirus and nonpoxvirus strains, indicating the adequate selectivity of our nanobiosensor for MPXV detection. Collectively, the nanobiosensor presents high greenness metrics associated with the use of a reproducible and large-scale fabrication method, an accessible and sustainable paper substrate, and a low volume of sample (2.5 μL), which could facilitate frequent testing of MPXV at point-of-care (POC).
Collapse
Affiliation(s)
- Lucas F de Lima
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil
| | - Priscilla P Barbosa
- Laboratory of Emerging Viruses, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
- Experimental Medicine Research Cluster, State University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
| | - Camila L Simeoni
- Laboratory of Emerging Viruses, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
- Experimental Medicine Research Cluster, State University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
| | - Rosemeire F de O de Paula
- Laboratory of Emerging Viruses, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
| | - José Luiz Proenca-Modena
- Laboratory of Emerging Viruses, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
- Experimental Medicine Research Cluster, State University of Campinas, Campinas, 13083-862 Campinas, SP, Brazil
| | - William R de Araujo
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970 Campinas, SP, Brazil
| |
Collapse
|
8
|
Sun B, Zhang Q, Liu X, Zhai Y, Gao C, Zhang Z. Fabrication of Laser-Induced Graphene Based Flexible Sensors Using 355 nm Ultraviolet Laser and Their Application in Human-Computer Interaction System. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6938. [PMID: 37959536 PMCID: PMC10648489 DOI: 10.3390/ma16216938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023]
Abstract
In recent years, flexible sensors based on laser-induced graphene (LIG) have played an important role in areas such as smart healthcare, smart skin, and wearable devices. This paper presents the fabrication of flexible sensors based on LIG technology and their applications in human-computer interaction (HCI) systems. Firstly, LIG with a sheet resistance as low as 4.5 Ω per square was generated through direct laser interaction with commercial polyimide (PI) film. The flexible sensors were then fabricated through a one-step method using the as-prepared LIG. The applications of the flexible sensors were demonstrated by an HCI system, which was fabricated through the integration of the flexible sensors and a flexible glove. The as-prepared HCI system could detect the bending motions of different fingers and translate them into the movements of the mouse on the computer screen. At the end of the paper, a demonstration of the HCI system is presented in which words were typed on a computer screen through the bending motion of the fingers. The newly designed LIG-based flexible HCI system can be used by persons with limited mobility to control a virtual keyboard or mouse pointer, thus enhancing their accessibility and independence in the digital realm.
Collapse
Affiliation(s)
- Binghua Sun
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Chongqing Research Institute, Jilin University, Chongqing 401100, China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
| | - Qixun Zhang
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Chongqing Research Institute, Jilin University, Chongqing 401100, China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
| | - Xin Liu
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Chongqing Research Institute, Jilin University, Chongqing 401100, China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
| | - You Zhai
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Chongqing Research Institute, Jilin University, Chongqing 401100, China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
| | - Chenchen Gao
- Key Laboratory of CNC Equipment Reliability, Ministry of Education, School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
- Chongqing Research Institute, Jilin University, Chongqing 401100, China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
| | - Zhongyuan Zhang
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| |
Collapse
|
9
|
Gadipelli S, Guo J, Li Z, Howard CA, Liang Y, Zhang H, Shearing PR, Brett DJL. Understanding and Optimizing Capacitance Performance in Reduced Graphene-Oxide Based Supercapacitors. SMALL METHODS 2023; 7:e2201557. [PMID: 36895068 DOI: 10.1002/smtd.202201557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/10/2023] [Indexed: 06/09/2023]
Abstract
Reduced graphene-oxide (RGO)-based electrodes in supercapacitors deliver high energy/power capacities compared to typical nanoporous carbon materials. However, extensive critical analysis of literature reveals enormous discrepancies (up to 250 F g-1 ) in the reported capacitance (variation of 100-350 F g-1 ) of RGO materials synthesized under seemingly similar methods, inhibiting an understanding of capacitance variation. Here, the key factors that control the capacitance performance of RGO electrodes are demonstrated by analyzing and optimizing various types of commonly applied electrode fabrication methods. Beyond usual data acquisition parameters and oxidation/reduction properties of RGO, a substantial difference of more than 100% in capacitance values (with change from 190 ± 20 to 340 ± 10 F g-1 ) is found depending on the electrode preparation method. For this demonstration, ≈40 RGO-based electrodes are fabricated from numerous distinctly different RGO materials via typically applied methods of solution (aqueous and organic) casting and compressed powders. The influence of data acquisition conditions and capacitance estimation practices are also discussed. Furthermore, by optimizing electrode processing method, a direct surface area governed capacitance relationship for RGO structures is revealed.
Collapse
Affiliation(s)
- Srinivas Gadipelli
- College of Physics, Sichuan University, Chengdu, 610064, China
- Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Jian Guo
- College of Physics, Sichuan University, Chengdu, 610064, China
| | - Zhuangnan Li
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Christopher A Howard
- Department of Physics & Astronomy, University College London, London, WC1E 6BT, UK
| | - Yini Liang
- College of Physics, Sichuan University, Chengdu, 610064, China
| | - Hong Zhang
- College of Physics, Sichuan University, Chengdu, 610064, China
| | - Paul R Shearing
- Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Dan J L Brett
- Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| |
Collapse
|