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Qin Z, Wang Z, Li D, Lv Y, Zhao B, Pan K. Nanofiber-Reinforced MXene/rGO Composite Aerogel for a High-Performance Piezoresistive Sensor and an All-Solid-State Supercapacitor Electrode Material. ACS APPLIED MATERIALS & INTERFACES 2024; 16:32554-32565. [PMID: 38865698 DOI: 10.1021/acsami.3c19462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
The assembly of two-dimensional (2D) nanomaterials into a three-dimensional (3D) aerogel can effectively prevent the problem of restacking. Here, nanofiber-reinforced MXene/reduced graphene oxide (rGO) conductive aerogel is prepared via the hydrothermal reduction of GO using pyrrole and in situ composite with MXene. Combined with low-content 2D conductive nanosheets (MXene and rGO) as "brick", conductive polypyrrole as "mortar", and one-dimensional (1D) nanofiber as "rebar", a strong interfacial cross-linking of MXene and rGO nanosheets is realized through covalent and noncovalent bonds to synergistically improve its mechanical performance. Based on the prepared MXene/rGO aerogel, a high-performance piezoresistive sensor with a sensitivity of up to 20.80 kPa-1 in a wide pressure range of 15.6 kPa is obtained, and it can withstand more than 5000 cyclic compressions. Besides, the sensor shows a stable output and can be applied to monitor various human motion signals. In addition, an all-solid-state supercapacitor electrode is also fabricated, which shows a high area-specific capacitance of up to 274 mF/cm2 at a current density of 1 mA/cm2.
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Affiliation(s)
- Zhen Qin
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ziwen Wang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dan Li
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuhuan Lv
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Biao Zhao
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Kai Pan
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Qin R, Nong J, Wang K, Liu Y, Zhou S, Hu M, Zhao H, Shan G. Recent Advances in Flexible Pressure Sensors Based on MXene Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312761. [PMID: 38380773 DOI: 10.1002/adma.202312761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/23/2024] [Indexed: 02/22/2024]
Abstract
In the past decade, with the rapid development of wearable electronics, medical health monitoring, the Internet of Things, and flexible intelligent robots, flexible pressure sensors have received unprecedented attention. As a very important kind of electronic component for information transmission and collection, flexible pressure sensors have gained a wide application prospect in the fields of aerospace, biomedical and health monitoring, electronic skin, and human-machine interface. In recent years, MXene has attracted extensive attention because of its unique 2D layered structure, high conductivity, rich surface terminal groups, and hydrophilicity, which has brought a new breakthrough for flexible sensing. Thus, it has become a revolutionary pressure-sensitive material with great potential. In this work, the recent advances of MXene-based flexible pressure sensors are reviewed from the aspects of sensing type, sensing mechanism, material selection, structural design, preparation strategy, and sensing application. The methods and strategies to improve the performance of MXene-based flexible pressure sensors are analyzed in details. Finally, the opportunities and challenges faced by MXene-based flexible pressure sensors are discussed. This review will bring the research and development of MXene-based flexible sensors to a new high level, promoting the wider research exploitation and practical application of MXene materials in flexible pressure sensors.
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Affiliation(s)
- Ruzhan Qin
- College of Automation, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
- School of Instrumentation Science and Opto-electronic Engineering, Beihang University, Beijing, 100191, China
- School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Juan Nong
- College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, China
| | - Keqiang Wang
- College of Automation, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Yishen Liu
- Institute of Intelligent Manufacturing, Guangdong Academy of Sciences, Guangdong Key Laboratory of Modern Control Technology, Guangzhou, 510070, China
| | - Songbin Zhou
- Institute of Intelligent Manufacturing, Guangdong Academy of Sciences, Guangdong Key Laboratory of Modern Control Technology, Guangzhou, 510070, China
| | - Mingjun Hu
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Hongbin Zhao
- State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing, 100088, China
| | - Guangcun Shan
- School of Instrumentation Science and Opto-electronic Engineering, Beihang University, Beijing, 100191, China
- College of Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, 10068, China
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3
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Liu J, Wang L, Xu R, Zhang X, Zhao J, Liu H, Chen F, Qu L, Tian M. Underwater Gesture Recognition Meta-Gloves for Marine Immersive Communication. ACS NANO 2024; 18:10818-10828. [PMID: 38597459 DOI: 10.1021/acsnano.3c13221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Rapid advancements in immersive communications and artificial intelligence have created a pressing demand for high-performance tactile sensing gloves capable of delivering high sensitivity and a wide sensing range. Unfortunately, existing tactile sensing gloves fall short in terms of user comfort and are ill-suited for underwater applications. To address these limitations, we propose a flexible hand gesture recognition glove (GRG) that contains high-performance micropillar tactile sensors (MPTSs) inspired by the flexible tube foot of a starfish. The as-prepared flexible sensors offer a wide working range (5 Pa to 450 kPa), superfast response time (23 ms), reliable repeatability (∼10000 cycles), and a low limit of detection. Furthermore, these MPTSs are waterproof, which makes them well-suited for underwater applications. By integrating the high-performance MPTSs with a machine learning algorithm, the proposed GRG system achieves intelligent recognition of 16 hand gestures under water, which significantly extends real-time and effective communication capabilities for divers. The GRG system holds tremendous potential for a wide range of applications in the field of underwater communications.
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Affiliation(s)
- Jiaxu Liu
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Lihong Wang
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Ruidong Xu
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Xinwei Zhang
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Jisheng Zhao
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Hong Liu
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Fuxing Chen
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Lijun Qu
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
| | - Mingwei Tian
- Health & Protective Smart Textiles Research Center (HPT)/Research Center for Intelligent & Wearable Technology, College of Textiles & Clothing, State Key Laboratory of Bio-Fibers & Eco-Textiles, Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao University, Qingdao, Shandong 266071, People's Republic of China
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Wang F, Su D, Ma K, Qin B, Li B, Li J, Zhang C, Xin Y, Huang Z, Yang W, Wang S, He X. Reliable and Scalable Piezoresistive Sensors with an MXene/MoS 2 Hierarchical Nanostructure for Health Signals Monitoring. ACS APPLIED MATERIALS & INTERFACES 2023; 15:44001-44011. [PMID: 37671797 DOI: 10.1021/acsami.3c09464] [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: 09/07/2023]
Abstract
The increased popularity of wearable electronic devices has led to a greater need for advanced sensors. However, fabricating pressure sensors that are flexible, highly sensitive, robust, and compatible with large-scale fabrication technology is challenging. This work investigates a piezoresistive sensor constructed from an MXene/MoS2 hierarchical nanostructure, which is obtained through an easy and inexpensive fabrication process. The sensor exhibits a high sensitivity of 0.42 kPa-1 (0-1.5 kPa), rapid response (∼36 ms), and remarkable mechanical durability (∼10,000 cycles at 13 kPa). The sensor has been demonstrated to be successful in detecting human motion, speech recognition, and physiological signals, particularly in analyzing human pulse. These data can be used to alert and identify irregularities in human health. Additionally, the sensing units are able to construct sensor arrays of various sizes and configurations, enabling pressure distribution imaging in a variety of application scenarios. This research proposes a cost-effective and scalable approach to fabricating piezoresistive sensors and sensor arrays, which can be utilized for monitoring human health and for use in human-machine interfaces.
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Affiliation(s)
- Fengming Wang
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Daojian Su
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Ke Ma
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Bolong Qin
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Baijun Li
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Junxian Li
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Chi Zhang
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Yue Xin
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Zundi Huang
- School of Rail Transportation, Wuyi University, Jiangmen 529020, P.R. China
| | - Weijia Yang
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Shuangpeng Wang
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P.R. China
| | - Xin He
- School of Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
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Rathi K, Kim D. Super-compressible and mechanically stable reduced graphene oxide aerogel for wearable functional devices. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2214854. [PMID: 37287816 PMCID: PMC10243390 DOI: 10.1080/14686996.2023.2214854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/05/2023] [Accepted: 05/11/2023] [Indexed: 06/09/2023]
Abstract
The graphene-based aerogels with good electrical conductivity and compressibility have been reported. However, it is challenging to fabricate the graphene aerogel to have excellent mechanical stability for its application in wearable devices. Thus, inspired by macroscale arch-shaped elastic structures and the importance of crosslinking in microstructural stability, we synthesized the mechanically stable reduced graphene oxide aerogels with small elastic modulus by optimizing the reducing agent to make the aligned wrinkled microstructure in which physical crosslinking is dominant. We used L-ascorbic acid, urea, and hydrazine hydrate as reducing agents to synthesize the graphene aerogels rGO-LAA, rGO-Urea, and rGO-HH, respectively. Hydrazine hydrate was found to be best in enhancing the physical and ionic interaction among graphene nanoflakes to achieve a wavy structure with excellent fatigue resistance. Notably, the optimized rGO-HH aerogel maintained structural stability even after 1000 cycles of compression of 50% strain and decompression, showing 98.7% stress retention and 98.1% height retention. We also studied the piezoresistive properties of the rGO-HH aerogel and showed that the rGO-HH-based pressure sensor exhibited excellent sensitivity (~5.7 kPa-1) with good repeatability. Hence, a super-compressible and mechanically stable piezoresistive material for wearable functional devices was demonstrated by controlling the microstructure and surface chemistry of the reduced graphene oxide aerogel.
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Affiliation(s)
- Keerti Rathi
- School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, South Korea
| | - Duckjong Kim
- School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, South Korea
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Lv TR, Zhang WH, Yang YQ, Zhang JC, Yin MJ, Yin Z, Yong KT, An QF. Micro/Nano-Fabrication of Flexible Poly(3,4-Ethylenedioxythiophene)-Based Conductive Films for High-Performance Microdevices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301071. [PMID: 37069773 DOI: 10.1002/smll.202301071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/11/2023] [Indexed: 06/19/2023]
Abstract
With the increasing demands for novel flexible organic electronic devices, conductive polymers are now becoming the rising star for reaching such targets, which has witnessed significant breakthroughs in the fields of thermoelectric devices, solar cells, sensors, and hydrogels during the past decade due to their outstanding conductivity, solution-processing ability, as well as tailorability. However, the commercialization of those devices still lags markedly behind the corresponding research advances, arising from the not high enough performance and limited manufacturing techniques. The conductivity and micro/nano-structure of conductive polymer films are two critical factors for achieving high-performance microdevices. In this review, the state-of-the-art technologies for developing organic devices by using conductive polymers are comprehensively summarized, which will begin with a description of the commonly used synthesis methods and mechanisms for conductive polymers. Next, the current techniques for the fabrication of conductive polymer films will be proffered and discussed. Subsequently, approaches for tailoring the nanostructures and microstructures of conductive polymer films are summarized and discussed. Then, the applications of micro/nano-fabricated conductive films-based devices in various fields are given and the role of the micro/nano-structures on the device performances is highlighted. Finally, the perspectives on future directions in this exciting field are presented.
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Affiliation(s)
- Tian-Run Lv
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Wen-Hai Zhang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, Xinjiang, 830017, China
| | - Ya-Qiong Yang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Jia-Chen Zhang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Ming-Jie Yin
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Zhigang Yin
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing, 400044, China
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales, 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales, 2006, Australia
- The Biophotonics and Mechano-Bioengineering Lab, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Quan-Fu An
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
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Lai QT, Zhao XH, Sun QJ, Tang Z, Tang XG, Roy VAL. Emerging MXene-Based Flexible Tactile Sensors for Health Monitoring and Haptic Perception. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300283. [PMID: 36965088 DOI: 10.1002/smll.202300283] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Due to their potential applications in physiological monitoring, diagnosis, human prosthetics, haptic perception, and human-machine interaction, flexible tactile sensors have attracted wide research interest in recent years. Thanks to the advances in material engineering, high performance flexible tactile sensors have been obtained. Among the representative pressure sensing materials, 2D layered nanomaterials have many properties that are superior to those of bulk nanomaterials and are more suitable for high performance flexible sensors. As a class of 2D inorganic compounds in materials science, MXene has excellent electrical, mechanical, and biological compatibility. MXene-based composites have proven to be promising candidates for flexible tactile sensors due to their excellent stretchability and metallic conductivity. Therefore, great efforts have been devoted to the development of MXene-based composites for flexible sensor applications. In this paper, the controllable preparation and characterization of MXene are introduced. Then, the recent progresses on fabrication strategies, operating mechanisms, and device performance of MXene composite-based flexible tactile sensors, including flexible piezoresistive sensors, capacitive sensors, piezoelectric sensors, triboelectric sensors are reviewed. After that, the applications of MXene material-based flexible electronics in human motion monitoring, healthcare, prosthetics, and artificial intelligence are discussed. Finally, the challenges and perspectives for MXene-based tactile sensors are summarized.
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Affiliation(s)
- Qin-Teng Lai
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou, 511400, P. R. China
| | - Xin-Hua Zhao
- Department of Chemistry, South University of Science and Technology of China, Shenzhen, 518055, P. R. China
| | - Qi-Jun Sun
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou, 511400, P. R. China
| | - Zhenhua Tang
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou, 511400, P. R. China
| | - Xin-Gui Tang
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou, 511400, P. R. China
| | - Vellaisamy A L Roy
- School of Science and Technology, Hong Kong Metropolitan University, Hong Kong, 999077, P. R. China
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Zhi C, Shi S, Zhang S, Si Y, Yang J, Meng S, Fei B, Hu J. Bioinspired All-Fibrous Directional Moisture-Wicking Electronic Skins for Biomechanical Energy Harvesting and All-Range Health Sensing. NANO-MICRO LETTERS 2023; 15:60. [PMID: 36864316 PMCID: PMC9981859 DOI: 10.1007/s40820-023-01028-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Highlights Bioinspired directional moisture-wicking electronic skin (DMWES) was successfully realized by surface energy gradient and push–pull effect via the design of distinct hydrophobic-hydrophilic difference. The DMWES membrane showed excellent comprehensive pressure sensing performance with high sensitivity and good single-electrode triboelectric nanogenerator performance The superior pressure sensing and triboelectric performance enabled the DMWES for all-range healthcare sensing, including accurate pulse monitoring, voice recognition, and gait recognition. Abstract Electronic skins can monitor minute physiological signal variations in the human skins and represent the body’s state, showing an emerging trend for alternative medical diagnostics and human–machine interfaces. In this study, we designed a bioinspired directional moisture-wicking electronic skin (DMWES) based on the construction of heterogeneous fibrous membranes and the conductive MXene/CNTs electrospraying layer. Unidirectional moisture transfer was successfully realized by surface energy gradient and push–pull effect via the design of distinct hydrophobic-hydrophilic difference, which can spontaneously absorb sweat from the skin. The DMWES membrane showed excellent comprehensive pressure sensing performance, high sensitivity (maximum sensitivity of 548.09 kPa−1), wide linear range, rapid response and recovery time. In addition, the single-electrode triboelectric nanogenerator based on the DMWES can deliver a high areal power density of 21.6 µW m−2 and good cycling stability in high pressure energy harvesting. Moreover, the superior pressure sensing and triboelectric performance enabled the DMWES for all-range healthcare sensing, including accurate pulse monitoring, voice recognition, and gait recognition. This work will help to boost the development of the next-generation breathable electronic skins in the applications of AI, human–machine interaction, and soft robots. Supplementary Information The online version contains supplementary material available at 10.1007/s40820-023-01028-2.
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Affiliation(s)
- Chuanwei Zhi
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Shuo Shi
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Shuai Zhang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Yifan Si
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Jieqiong Yang
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Shuo Meng
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China
| | - Bin Fei
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong S.A.R, 999077, China
| | - Jinlian Hu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong S.A.R, 999077, China.
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, People's Republic of China.
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9
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Lai QT, Sun QJ, Tang Z, Tang XG, Zhao XH. Conjugated Polymer-Based Nanocomposites for Pressure Sensors. Molecules 2023; 28:1627. [PMID: 36838615 PMCID: PMC9964060 DOI: 10.3390/molecules28041627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
Flexible sensors are the essential foundations of pressure sensing, microcomputer sensing systems, and wearable devices. The flexible tactile sensor can sense stimuli by converting external forces into electrical signals. The electrical signals are transmitted to a computer processing system for analysis, realizing real-time health monitoring and human motion detection. According to the working mechanism, tactile sensors are mainly divided into four types-piezoresistive, capacitive, piezoelectric, and triboelectric tactile sensors. Conventional silicon-based tactile sensors are often inadequate for flexible electronics due to their limited mechanical flexibility. In comparison, polymeric nanocomposites are flexible and stretchable, which makes them excellent candidates for flexible and wearable tactile sensors. Among the promising polymers, conjugated polymers (CPs), due to their unique chemical structures and electronic properties that contribute to their high electrical and mechanical conductivity, show great potential for flexible sensors and wearable devices. In this paper, we first introduce the parameters of pressure sensors. Then, we describe the operating principles of resistive, capacitive, piezoelectric, and triboelectric sensors, and review the pressure sensors based on conjugated polymer nanocomposites that were reported in recent years. After that, we introduce the performance characteristics of flexible sensors, regarding their applications in healthcare, human motion monitoring, electronic skin, wearable devices, and artificial intelligence. In addition, we summarize and compare the performances of conjugated polymer nanocomposite-based pressure sensors that were reported in recent years. Finally, we summarize the challenges and future directions of conjugated polymer nanocomposite-based sensors.
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Affiliation(s)
- Qin-Teng Lai
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou 511400, China
| | - Qi-Jun Sun
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou 511400, China
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong 518060, China
| | - Zhenhua Tang
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou 511400, China
| | - Xin-Gui Tang
- School of Physics and Optoelectric Engineering, Guangdong University of Technology, Guangzhou 511400, China
| | - Xin-Hua Zhao
- Department of Chemistry, South University of Science and Technology of China, Shenzhen 518060, China
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10
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Chen S, Huang W. A review related to MXene preparation and its sensor arrays of electronic skins. Analyst 2023; 148:435-453. [PMID: 36468668 DOI: 10.1039/d2an01143c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
MXenes have been flourishing over the last decade as a high-performance 2D material, which combines the advantages of high electrical conductivity, photothermal conversion, and easy dispersion. They have been used to create soft, highly conductive, self-healing, and tactile-simulating electronic skins (E-skins). However, these E-skins remain generally limited to one or two functions with a complex preparation process. Next-generation E-skins necessitate not only large-scale fabrication using simple and fast methods but also the integration of multiple sensing functions and signal analysis components in order to provide functionality that was not unattainable in the past. Starting with the synthesis of pure MXenes, we walk through the steps of designing MXene sensors, integrating electronic skin arrays, and determining the function of MXene-based electronic skins. We also summarise the problems with existing MXene-based E-skins and possible futuristic directions.
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Affiliation(s)
- Sha Chen
- Chengdu Techman Software Co., Ltd, Chengdu, China
| | - Wu Huang
- Sichuan University, Chengdu, China.
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11
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Karmakar RS, Chu CP, Li CL, Hsueh CH, Liao YC, Lu YW. Skin-Inspired Tactile Sensor on Cellulose Fiber Substrates with Interfacial Microstructure for Health Monitoring and Guitar Posture Feedback. BIOSENSORS 2023; 13:174. [PMID: 36831940 PMCID: PMC9953271 DOI: 10.3390/bios13020174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/14/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Skin-inspired flexible tactile sensors, with interfacial microstructure, are developed on cellulose fiber substrates for subtle pressure applications. Our device is made of two cellulose fiber substrates with conductive microscale structures, which emulate the randomly distributed spinosum in between the dermis and epidermis layers of the human skin. The microstructures not only permit a higher stress concentration at the tips but also generate electrical contact points and change contact resistance between the top and bottom substrates when the pressure is applied. Meanwhile, cellulose fibers possessing viscoelastic and biocompatible properties are utilized as substrates to mimic the dermis and epidermis layers of the skin. The electrical contact resistances (ECR) are then measured to quantify the tactile information. The microstructures and the substrate properties are studied to enhance the sensors' sensitivity. A very high sensitivity (14.4 kPa-1) and fast recovery time (approx. 2.5 ms) are achieved in the subtle pressure range (approx. 0-0.05 kPa). The device can detect subtle pressures from the human body due to breathing patterns and voice activity showing its potential for healthcare. Further, the guitar strumming and chord progression of the players with different skill levels are assessed to monitor the muscle strain during guitar playing, showing its potential for posture feedback in playing guitar or another musical instrument.
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Affiliation(s)
- Rajat Subhra Karmakar
- Department of Biomechatronics Engineering, National Taiwan University, 10617 Taipei, Taiwan
| | - Chia-Pei Chu
- Department of Chemical Engineering, National Taiwan University, 10617 Taipei, Taiwan
| | - Chia-Lin Li
- Department of Materials Science and Engineering, National Taiwan University, 10617 Taipei, Taiwan
| | - Chun-Hway Hsueh
- Department of Materials Science and Engineering, National Taiwan University, 10617 Taipei, Taiwan
| | - Ying-Chih Liao
- Department of Chemical Engineering, National Taiwan University, 10617 Taipei, Taiwan
| | - Yen-Wen Lu
- Department of Biomechatronics Engineering, National Taiwan University, 10617 Taipei, Taiwan
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12
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Ma X, Song C, Zhang F, Dai Y, He P, Zhang X. Soft, Multifunctional, Robust Film Sensor Using a Ferroelectret with Significant Longitudinal and Transverse Piezoelectric Activity for Biomechanical Monitoring. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51291-51300. [PMID: 36321481 DOI: 10.1021/acsami.2c14378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Soft and intelligent bioelectronics have achieved unprecedented development in both academics and industries over the last few decades, especially as ideal body-worn detectors for continuous human health status monitoring. However, the longstanding functional stability of bioelectronics in multiple environmental conditions of variant temperatures, humidities, and mechanical stimuli or even in some extremes, such as ultraviolet radiation and X-ray radiation, has confined the application of these electronics. Herein, a self-sustainable, multifunctional, robust sensor for biomechanical monitoring is prepared by hybridizing a parallel-tunnel fluorinated poly(ethylene propylene) (FEP) ferroelectret film (sensing layer) and poly(dimethylsiloxane) (PDMS, protection layer). A fast response (80 ms) and a low pressure detection limit (10 Pa) were achieved. Notably, the self-powered sensor can not only sensitively detect the loading of solid objects but also percept liquid water droplets and airflow, which satisfies the diverse needs of wearable devices. Meanwhile, the capability of stable and repeatable operation under a wide temperature range (-26-70 °C), extreme moisture, continuous mechanical stimulus (∼1.08 million cycles), and long-time ultraviolet radiation enabled the extensive and long-term application of such sensors in multiple scenarios. Moreover, the reproducibility of sensing performance after X-ray radiation can be realized through second contact polarization even after encapsulation. Due to the inherent mechanical flexibility, the fabricated sensor was conformally attached to rough and deformed skin and verified the feasibility of wearable biomechanical sensing with high sensitivity from facial smiling to plantar movement. This work provides an efficient strategy for multifunctional sensing, holding great promise for advanced soft bioelectronics in the next generation of wearable intelligent electronic systems.
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Affiliation(s)
- Xingchen Ma
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
- School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
| | - Chao Song
- School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
| | - Fei Zhang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - Ying Dai
- School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
| | - Pengfei He
- School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
| | - Xiaoqing Zhang
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
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13
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Zhang W, Su Z, Zhang X, Wang W, Li Z. Recent progress on PEDOT‐based wearable bioelectronics. VIEW 2022. [DOI: 10.1002/viw.20220030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Wanying Zhang
- China‐Australia Institute for Advanced Materials and Manufacturing Jiaxing University Jiaxing PR China
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou PR China
| | - Zhen Su
- China‐Australia Institute for Advanced Materials and Manufacturing Jiaxing University Jiaxing PR China
| | - Xianchao Zhang
- Key Laboratory of Medical Electronics and Digital Health of Zhejiang Province Jiaxing University Jiaxing PR China
- Engineering Research Center of Intelligent Human Health Situation Awareness of Zhejiang Province Jiaxing University Jiaxing PR China
| | - Wentao Wang
- School of Materials Science and Engineering Zhejiang Sci‐Tech University Hangzhou PR China
| | - Zaifang Li
- China‐Australia Institute for Advanced Materials and Manufacturing Jiaxing University Jiaxing PR China
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14
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MXene-based flexible pressure sensor with piezoresistive properties significantly enhanced by atomic layer infiltration. NANO MATERIALS SCIENCE 2022. [DOI: 10.1016/j.nanoms.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Meng Q, Yang C, Tai X, Cheng K, Li P, Li H, Liu X, Liu S. Recent advances in MXenes and their composites for wearable sensors. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:453001. [PMID: 36027889 DOI: 10.1088/1361-648x/ac8d40] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Flexible wearable sensors have attracted significant interests and created high technological impact on human health monitoring, environmental pollutant detection and bimolecular identification. For sensors, the choice of sensing materials is a crucial priority. As a rising star in the family of two-dimensional materials, MXenes has metal-like electrical properties, adjustable surface chemical property, hydrophilicity and excellent mechanical properties, making them attractive for building different high-performance sensors. This study provides a comprehensive overview of recent advances in MXene-based sensor technology. The synthetic methods and basic properties of MXenes are first briefly introduced. The representative research progresses in MXene-based pressure sensors, strain sensors, gas sensors and electrochemical biosensors are then presented. Finally, the main challenges and future prospects of MXene-based materials in wearable sensor applications are discussed.
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Affiliation(s)
- Qi Meng
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Cao Yang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Xiaolin Tai
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Kang Cheng
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Pengfei Li
- Zhengzhou Nissan Automobile Co., Ltd, Zhengzhou 451450, People's Republic of China
| | - Hongpeng Li
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225127, People's Republic of China
| | - Xuying Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Shuiren Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China
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Abstract
MXene (Ti3C2Tx) film prepared by vacuum-assisted filtration (V-MXene film) is the most common 2D MXene macroscopic assembly with ultra-high electrical conductivity, tunable interlayer space, diverse surface chemical properties, favorable mechanical properties and so on, showing great commercial value in the fields of energy storage, electromagnetic interference shielding and actuators and so on. This paper focuses on the preparation, properties and applications of V-MXene film, objectively reviews and evaluates the important research progress of V-MXene film in recent years and analyzes the main problems at present. In addition, the development direction and trend of V-MXene film in the future are prospected from the aspects of preparation, property control and application fields, which provide guidance and inspiration for the further development of functional MXene-based films and make contributions to the progress of MXene technology.
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Bubniene US, Ratautaite V, Ramanavicius A, Bucinskas V. Conducting Polymers for the Design of Tactile Sensors. Polymers (Basel) 2022; 14:polym14152984. [PMID: 35893948 PMCID: PMC9370767 DOI: 10.3390/polym14152984] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/09/2022] [Accepted: 07/20/2022] [Indexed: 11/24/2022] Open
Abstract
This paper provides an overview of the application of conducting polymers (CPs) used in the design of tactile sensors. While conducting polymers can be used as a base in a variety of forms, such as films, particles, matrices, and fillers, the CPs generally remain the same. This paper, first, discusses the chemical and physical properties of conducting polymers. Next, it discusses how these polymers might be involved in the conversion of mechanical effects (such as pressure, force, tension, mass, displacement, deformation, torque, crack, creep, and others) into a change in electrical resistance through a charge transfer mechanism for tactile sensing. Polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene), polydimethylsiloxane, and polyacetylene, as well as application examples of conducting polymers in tactile sensors, are overviewed. Attention is paid to the additives used in tactile sensor development, together with conducting polymers. There is a long list of additives and composites, used for different purposes, namely: cotton, polyurethane, PDMS, fabric, Ecoflex, Velostat, MXenes, and different forms of carbon such as graphene, MWCNT, etc. Some design aspects of the tactile sensor are highlighted. The charge transfer and operation principles of tactile sensors are discussed. Finally, some methods which have been applied for the design of sensors based on conductive polymers, are reviewed and discussed.
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Affiliation(s)
- Urte Samukaite Bubniene
- Department of Mechatronics, Robotics and Digital Manufacturing, Faculty of Mechanics, Vilnius Gediminas Technical University, J. Basanaviciaus Str. 28, LT-03224 Vilnius, Lithuania;
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Sauletekio Av. 3, LT-10257 Vilnius, Lithuania;
- Correspondence: (U.S.B.); (A.R.)
| | - Vilma Ratautaite
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Sauletekio Av. 3, LT-10257 Vilnius, Lithuania;
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
| | - Arunas Ramanavicius
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Sauletekio Av. 3, LT-10257 Vilnius, Lithuania;
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
- Correspondence: (U.S.B.); (A.R.)
| | - Vytautas Bucinskas
- Department of Mechatronics, Robotics and Digital Manufacturing, Faculty of Mechanics, Vilnius Gediminas Technical University, J. Basanaviciaus Str. 28, LT-03224 Vilnius, Lithuania;
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18
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Koyappayil A, Chavan SG, Roh YG, Lee MH. Advances of MXenes; Perspectives on Biomedical Research. BIOSENSORS 2022; 12:bios12070454. [PMID: 35884257 PMCID: PMC9313156 DOI: 10.3390/bios12070454] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 12/25/2022]
Abstract
The last decade witnessed the emergence of a new family of 2D transition metal carbides and nitrides named MXenes, which quickly gained momentum due to their exceptional electrical, mechanical, optical, and tunable functionalities. These outstanding properties also rendered them attractive materials for biomedical and biosensing applications, including drug delivery systems, antimicrobial applications, tissue engineering, sensor probes, auxiliary agents for photothermal therapy and hyperthermia applications, etc. The hydrophilic nature of MXenes with rich surface functional groups is advantageous for biomedical applications over hydrophobic nanoparticles that may require complicated surface modifications. As an emerging 2D material with numerous phases and endless possible combinations with other 2D materials, 1D materials, nanoparticles, macromolecules, polymers, etc., MXenes opened a vast terra incognita for diverse biomedical applications. Recently, MXene research picked up the pace and resulted in a flood of literature reports with significant advancements in the biomedical field. In this context, this review will discuss the recent advancements, design principles, and working mechanisms of some interesting MXene-based biomedical applications. It also includes major progress, as well as key challenges of various types of MXenes and functional MXenes in conjugation with drug molecules, metallic nanoparticles, polymeric substrates, and other macromolecules. Finally, the future possibilities and challenges of this magnificent material are discussed in detail.
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Affiliation(s)
- Aneesh Koyappayil
- School of Integrative Engineering, Chung-Ang University, 84 Heuseok-ro, Dongjak-Gu, Seoul 06974, Korea; (A.K.); (S.G.C.)
| | - Sachin Ganpat Chavan
- School of Integrative Engineering, Chung-Ang University, 84 Heuseok-ro, Dongjak-Gu, Seoul 06974, Korea; (A.K.); (S.G.C.)
| | - Yun-Gil Roh
- Department of Convergence in Health and Biomedicine, Chungbuk University, 1 Chungdae-ro, Seowon-gu, Cheongju 28644, Korea;
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, 84 Heuseok-ro, Dongjak-Gu, Seoul 06974, Korea; (A.K.); (S.G.C.)
- Correspondence: ; Tel.: +82-2-820-5503; Fax: +82-2-814-2651
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