1
|
Duc TV, Nguyen VC, Kim HC. Analysis of the characteristics of silver nanowires (AgNW) random network for transparent heater applications. NANOTECHNOLOGY 2024; 35:285705. [PMID: 38412533 DOI: 10.1088/1361-6528/ad2d7c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
Transparent heaters (THs) find widespread application in various indoor and outdoor settings, such as LCD panels and motorcycle helmet visors. Among the materials used for efficient TH performance, the AgNW network stands out due to its high conductivity, substantial transmittance, and minimal solution requirement. Extensive research has been directed towards enhancing AgNW characteristics, focusing on smaller diameters and longer wires. In TH applications, the primary considerations include a rapid response and elevated temperature. Consequently, this research delves into investigating the impact of parameters like diameter, length, and density on random AgNW networks under varying applied voltages. The finite element method is employed for analyzing temperature changes in response to voltage application, particularly in scenarios involving small-scale setups with high-density and high-percolation AgNW networks. The results reveal a significant increase in the thermal transition rate, ranging from 28% to 36%, with varying densities in the random network. Within the same density, the AgNW network with larger diameters and lengths demonstrates the highest temperatures, aligning with previous calculations. Furthermore, a trade-off exists between optical properties in smaller diameters and electrical properties in larger diameters within a relatively narrow temperature range.
Collapse
Affiliation(s)
- Thinh-Vuong Duc
- Department of Future Automotive Engineering, Kongju National University, 1223-24(#7-205), Cheonandaero, Seobuk-Gu, Cheonan-Si, Chungnam 31080, Republic of Korea
| | - Van-Cuong Nguyen
- Department of Nanoscience and Engineering, Inje University, 197 Inje-ro, Gimhae-si, Gyeongsangnamdo 621-749, Republic of Korea
| | - Huyn-Chul Kim
- Department of Future Automotive Engineering, Kongju National University, 1223-24(#7-205), Cheonandaero, Seobuk-Gu, Cheonan-Si, Chungnam 31080, Republic of Korea
- Green Car Technology Research Center, Hydrogen Energy Human Resources Development Group, Kongju National University, Republic of Korea
| |
Collapse
|
2
|
Das R, Babu SPM, Visentin F, Palagi S, Mazzolai B. An earthworm-like modular soft robot for locomotion in multi-terrain environments. Sci Rep 2023; 13:1571. [PMID: 36709355 PMCID: PMC9884293 DOI: 10.1038/s41598-023-28873-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 01/24/2023] [Indexed: 01/30/2023] Open
Abstract
Robotic locomotion in subterranean environments is still unsolved, and it requires innovative designs and strategies to overcome the challenges of burrowing and moving in unstructured conditions with high pressure and friction at depths of a few centimeters. Inspired by antagonistic muscle contractions and constant volume coelomic chambers observed in earthworms, we designed and developed a modular soft robot based on a peristaltic soft actuator (PSA). The PSA demonstrates two active configurations from a neutral state by switching the input source between positive and negative pressure. PSA generates a longitudinal force for axial penetration and a radial force for anchorage, through bidirectional deformation of the central bellows-like structure, which demonstrates its versatility and ease of control. The performance of PSA depends on the amount and type of fluid confined in an elastomer chamber, generating different forces and displacements. The assembled robot with five PSA modules enabled to perform peristaltic locomotion in different media. The role of friction was also investigated during experimental locomotion tests by attaching passive scales like earthworm setae to the ventral side of the robot. This study proposes a new method for developing a peristaltic earthworm-like soft robot and provides a better understanding of locomotion in different environments.
Collapse
Affiliation(s)
- Riddhi Das
- Bioinspired Soft Robotics Lab, Istituto Italiano di Tecnologia, Genoa, Italy. .,The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera, Italy.
| | - Saravana Prashanth Murali Babu
- Bioinspired Soft Robotics Lab, Istituto Italiano di Tecnologia, Genoa, Italy. .,Center for Soft Robotics, SDU Biorobotics, The Maersk Mc-Kinney Moller Institute, University of Southern Denmark, Odense, Denmark.
| | - Francesco Visentin
- Bioinspired Soft Robotics Lab, Istituto Italiano di Tecnologia, Genoa, Italy.,Department of Computer Science, Università degli Studi di Verona, Verona, Italy
| | - Stefano Palagi
- Bioinspired Soft Robotics Lab, Istituto Italiano di Tecnologia, Genoa, Italy.,The BioRobotics Institute, Scuola Superiore Sant'Anna, Pontedera, Italy
| | - Barbara Mazzolai
- Bioinspired Soft Robotics Lab, Istituto Italiano di Tecnologia, Genoa, Italy.
| |
Collapse
|
3
|
Nguyen VH, Papanastasiou DT, Resende J, Bardet L, Sannicolo T, Jiménez C, Muñoz-Rojas D, Nguyen ND, Bellet D. Advances in Flexible Metallic Transparent Electrodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106006. [PMID: 35195360 DOI: 10.1002/smll.202106006] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Transparent electrodes (TEs) are pivotal components in many modern devices such as solar cells, light-emitting diodes, touch screens, wearable electronic devices, smart windows, and transparent heaters. Recently, the high demand for flexibility and low cost in TEs requires a new class of transparent conductive materials (TCMs), serving as substitutes for the conventional indium tin oxide (ITO). So far, ITO has been the most used TCM despite its brittleness and high cost. Among the different emerging alternative materials to ITO, metallic nanomaterials have received much interest due to their remarkable optical-electrical properties, low cost, ease of manufacturing, flexibility, and widespread applicability. These involve metal grids, thin oxide/metal/oxide multilayers, metal nanowire percolating networks, or nanocomposites based on metallic nanostructures. In this review, a comparison between TCMs based on metallic nanomaterials and other TCM technologies is discussed. Next, the different types of metal-based TCMs developed so far and the fabrication technologies used are presented. Then, the challenges that these TCMs face toward integration in functional devices are discussed. Finally, the various fields in which metal-based TCMs have been successfully applied, as well as emerging and potential applications, are summarized.
Collapse
Affiliation(s)
- Viet Huong Nguyen
- Faculty of Materials Science and Engineering, Phenikaa University, Hanoi, 12116, Viet Nam
| | | | - Joao Resende
- AlmaScience Colab, Madan Parque, Caparica, 2829-516, Portugal
| | - Laetitia Bardet
- Université Grenoble Alpes, CNRS, Grenoble INP, LMGP, Grenoble, F-38016, France
| | - Thomas Sannicolo
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Carmen Jiménez
- Université Grenoble Alpes, CNRS, Grenoble INP, LMGP, Grenoble, F-38016, France
| | - David Muñoz-Rojas
- Université Grenoble Alpes, CNRS, Grenoble INP, LMGP, Grenoble, F-38016, France
| | - Ngoc Duy Nguyen
- Département de Physique, CESAM/Q-MAT, SPIN, Université de Liège, Liège, B-4000, Belgium
| | - Daniel Bellet
- Université Grenoble Alpes, CNRS, Grenoble INP, LMGP, Grenoble, F-38016, France
| |
Collapse
|
4
|
Papanastasiou DT, Charvin N, Resende J, Nguyen VH, Sekkat A, Muñoz-Rojas D, Jiménez C, Flandin L, Bellet D. Effects of non-homogeneity and oxide coating on silver nanowire networks under electrical stress: comparison between experiment and modeling. NANOTECHNOLOGY 2021; 32:445702. [PMID: 34374663 DOI: 10.1088/1361-6528/ac1632] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Silver nanowire (AgNW) networks are among the most promising indium-free, flexible transparent electrodes for energy, lighting and heating devices. However, the lack of stability of such networks is a key factor that limits their industrial application. While applications require homogeneous networks, non-homogeneous AgNW networks are intentionally prepared in the present work to probe the mechanisms leading to failure under electrical stress. We show that induced non-homogeneities have a strong impact both on the spatial distribution of temperature (measured by IR imaging) and the current density throughout the electrode (as deduced from modeling). Regions with higher current density under elevated electrical stress are correlated to the origin of degradation. Furthermore, the influence of a zinc oxide (ZnO) layer on electrical performances of non-homogeneous specimens is studied. Thanks to ZnO coating, the tortuosity of electrical potential lines measured by the one-probe mapping technique is much lower than for bare networks. Additionally, coated network electrical failure occurs at 40% higher voltage compared to bare network, over 18 V, while reaching superior power-induced heating of 360 °C. The results presented here will contribute to the design and fabrication of more robust nanowire networks, particularly for application in transparent heaters.
Collapse
Affiliation(s)
| | - Nicolas Charvin
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble, France
| | - Joao Resende
- AlmaScience Colab, Madan Parque, 2829-516 Caparica, Portugal
| | - Viet Huong Nguyen
- Faculty of Materials Science and Engineering, Phenikaa University, Hanoi 12116, Vietnam
| | - Abderrahime Sekkat
- Univ. Grenoble Alpes, CNRS, Grenoble INP, LMGP, F-38000 Grenoble, France
| | - David Muñoz-Rojas
- Univ. Grenoble Alpes, CNRS, Grenoble INP, LMGP, F-38000 Grenoble, France
| | - Carmen Jiménez
- Univ. Grenoble Alpes, CNRS, Grenoble INP, LMGP, F-38000 Grenoble, France
| | - Lionel Flandin
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble, France
| | - Daniel Bellet
- Univ. Grenoble Alpes, CNRS, Grenoble INP, LMGP, F-38000 Grenoble, France
| |
Collapse
|
5
|
Artificial neural network modeling of the hexavalent uranium sorption onto chemically activated bentonite. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04541-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
6
|
Bannov AG, Popov MV, Brester AE, Kurmashov PB. Recent Advances in Ammonia Gas Sensors Based on Carbon Nanomaterials. MICROMACHINES 2021; 12:186. [PMID: 33673142 PMCID: PMC7918724 DOI: 10.3390/mi12020186] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023]
Abstract
This review paper is devoted to an extended analysis of ammonia gas sensors based on carbon nanomaterials. It provides a detailed comparison of various types of active materials used for the detection of ammonia, e.g., carbon nanotubes, carbon nanofibers, graphene, graphene oxide, and related materials. Different parameters that can affect the performance of chemiresistive gas sensors are discussed. The paper also gives a comparison of the sensing characteristics (response, response time, recovery time, operating temperature) of gas sensors based on carbon nanomaterials. The results of our tests on ammonia gas sensors using various techniques are analyzed. The problems related to the recovery of sensors using various approaches are also considered. Finally, the impact of relative humidity on the sensing behavior of carbon nanomaterials of various different natures was estimated.
Collapse
Affiliation(s)
- Alexander G. Bannov
- Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, Russia; (M.V.P.); (A.E.B.); (P.B.K.)
| | - Maxim V. Popov
- Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, Russia; (M.V.P.); (A.E.B.); (P.B.K.)
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Andrei E. Brester
- Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, Russia; (M.V.P.); (A.E.B.); (P.B.K.)
| | - Pavel B. Kurmashov
- Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, Russia; (M.V.P.); (A.E.B.); (P.B.K.)
| |
Collapse
|
7
|
CTAB-modified Ni2P@ACNT composite with enhanced supercapacitive and lithium/sodium storage performance. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114441] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
8
|
Lin CC, Lin DX, Lin SH. Degradation problem in silver nanowire transparent electrodes caused by ultraviolet exposure. NANOTECHNOLOGY 2020; 31:215705. [PMID: 32015222 DOI: 10.1088/1361-6528/ab724f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silver nanowire (AgNW) transparent electrode inevitably encounters ultraviolet (UV) irradiation from the environment, leading to stability and durability problems when in operation. Since UVA is the most abundant UV band and highly penetrating to AgNW related optoelectrical devices, it is crucial to understand the UVA damage caused to AgNWs. In this study, transparent electrodes composed of pristine AgNWs and glass substrates were manufactured with optimized processing parameters, and then used as model samples for aging tests. UVA exposure was conducted at elevated temperatures including 45 °C, 60 °C and 75 °C at 12 ± 5.5% relative humidity (RH) conditions. Comparative aging tests using conditions of damp heat (85 °C/85% RH) and 105 °C without UV (dark conditions) were also conducted. The relationship between optoelectrical property degradation, morphological changes and photo-corrosion was discussed. Under UVA exposure, the sheet resistance of electrodes increased gradually in an induction period before an abrupt change occurred. A nominal sheet resistance value of 200 Ω/sq was considered as a predestined failure of electrical property. It took 16, 24 and 60 h for UVA exposure at 75 °C, 60 °C and 45 °C, respectively, and 288 h by damp heat aging to degrade to the same status of predestined failure. Aging results of dark conditions indicated no degradation effect on AgNWs for 126 d aging. Moisture caused a different mechanism in damaging the capping agents on AgNWs. Nanocubes of silver chloride and sodium chloride were prone to precipitate at higher aging temperature such as 75 °C with UVA exposure. Sulfidation accounted for deterioration of optical transmittance, and occurred significantly at 45 °C with UVA irradiation and under damp heat conditions. The synergistic aging effect of UVA irradiance at elevated temperature on AgNW degradation has been unambiguously demonstrated. The results of this study provide guidelines for the design of optoelectronic devices when utilizing AgNW transparent electrodes.
Collapse
Affiliation(s)
- Chiao-Chi Lin
- Department of Materials Science and Engineering, Feng Chia University, Taichung 40724, Taiwan
| | | | | |
Collapse
|
9
|
Kim JH, Ma J, Jo S, Lee S, Kim CS. Enhancement of Antibacterial Performance of Silver Nanowire Transparent Film by Post-Heat Treatment. NANOMATERIALS 2020; 10:nano10050938. [PMID: 32414078 PMCID: PMC7279492 DOI: 10.3390/nano10050938] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/18/2020] [Accepted: 05/11/2020] [Indexed: 01/17/2023]
Abstract
Silver nanomaterials (AgNMs) have been applied as antibacterial agents to combat bacterial infections that can cause disease and death. The antibacterial activity of AgNMs can be improved by increasing the specific surface area, so significant efforts have been devoted to developing various bottom-up synthesis methods to control the size and shape of the particles. Herein, we report on a facile heat-treatment method that can improve the antibacterial activity of transparent silver nanowire (AgNW) films in a size-controllable, top-down manner. AgNW films were fabricated via spin-coating and were then heated at different temperatures (230 and 280 °C) for 30 min. The morphology and the degree of oxidation of the as-fabricated AgNW film were remarkably sensitive to the heat-treatment temperature, while the transparency was insensitive. As the heat-treatment temperature increased, the AgNWs spontaneously broke into more discrete wires and droplets, and oxidation proceeded faster. The increase in the heat-treatment temperature further increased the antibacterial activity of the AgNW film, and the heat treatment at 280 °C improved the antibacterial activity from 31.7% to 94.7% for Staphylococcus aureus, and from 57.0% to 98.7% for Escherichia coli. Following commonly accepted antibacterial mechanisms of AgNMs, we present a correlation between the antibacterial activity and surface observations of the AgNW film.
Collapse
Affiliation(s)
- Ji-Hyeon Kim
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (J.M.); (S.L.)
| | - Junfei Ma
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (J.M.); (S.L.)
- School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu 41566, Korea;
| | - Sungjin Jo
- School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu 41566, Korea;
| | - Seunghun Lee
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (J.M.); (S.L.)
| | - Chang Su Kim
- Advanced Nano-Surface Department, Korea Institute of Materials Science, Changwon 51508, Korea; (J.-H.K.); (J.M.); (S.L.)
- Correspondence: ; Tel.: +82-55-280-3696
| |
Collapse
|