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Zhang L, Zhang Z, Gao X, Liao H. The Preparation of Crumpled Graphene Oxide Balls and Research in Tribological Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2383. [PMID: 38793450 PMCID: PMC11122906 DOI: 10.3390/ma17102383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/09/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024]
Abstract
In this study, crumpled graphene oxide balls (CGBs) were prepared via capillary compression using a rapidly evaporating aerosol droplet method. The CGBs were observed using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy. The size distributions of crumpled particles were obtained using a laser nanometer particle size analyzer (DLS). The dispersibility of the water and the ionic liquid (IL) was tested by ultrasonic dispersion. The tribological properties of water or ionic liquids containing crumpled graphene oxide ball additives (W/IL-CGB) were tested by a reciprocating friction tester and compared with water/ionic liquids with graphene oxide. The morphology of the wear scar was observed by a three-dimensional optical microscope and its lubrication mechanism was analyzed. The results show that the CGBs were successfully prepared by rapid evaporation of aerosol droplets, and the obtained CGBs were crumpled paper spheres. The CGBs had good water dispersion and ionic liquid dispersion, and IL-CGB has excellent anti-friction and anti-wear effects on steel-steel friction pairs. During the friction process, the CGB was adsorbed at the interface of the steel-steel friction pair to form a protective layer, which avoids the direct contact of the friction pair, thereby reducing friction and wear.
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Affiliation(s)
| | - Zhengrui Zhang
- College of Civil Engineering, Sichuan University of Science & Engineering, Zigong 643000, China; (L.Z.); (X.G.); (H.L.)
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2
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Bi X, Yao M, Huang Z, Wang Z, Shen H, Wong CP, Jiang C. Biomimetic Electronic Skin Based on a Stretchable Ionogel Mechanoreceptor Composed of Crumpled Conductive Rubber Electrodes for Synchronous Strain, Pressure, and Temperature Detection. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38592053 DOI: 10.1021/acsami.4c01899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Electronic skin (e-skin) is showing a huge potential in human-computer interaction, intelligent robots, human health, motion monitoring, etc. However, it is still challenging for e-skin to realize distinguishable detection of stretching strain, vertical pressure, and temperature through a simple noncoupling structure design. Here, a stretchable multimodal biomimetic e-skin was fabricated by integrating layer-by-layer self-assembled crumpled reduced graphene oxide/multiwalled carbon nanotubes film on natural rubber (RGO/MWCNTs@NR) as stretchable conductive electrodes and polyacrylamide/NaCl ionogel as a dielectric layer into an ionotropic capacitive mechanoreceptor. Unlike natural skin receptors, the sandwich-like stretchable ionogel mechanoreceptor possessed a distinct ionotropic capacitive behavior for strain and pressure detection. The results showed that the biomimetic e-skin displayed a negative capacitance change with superior stretchability (0-300%) and a high gauge factor of 0.27 in 180-300% strain, while exhibiting a normal positive piezo-capacitance behavior in vertical pressure range of 0-15 kPa with a maximal sensitivity of 1.759 kPa-1. Based on this feature, the biomimetic e-skin showed an excellent synchronous detection capability of planar strain and vertical pressure in practical wearable applications such as gesture recognition and grasping movement detection without a complicated mathematical or signal decoupling process. In addition, the biomimetic e-skin exhibited a quantifiable linear responsiveness to temperature from 20-90 °C with a temperature coefficient of 0.55%/°C. These intriguing properties gave the biomimetic e-skin the ability to perform a complete function similar to natural skin but beyond its performance for future wearable devices and artificial intelligence devices.
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Affiliation(s)
- Xiaoyun Bi
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Manzhao Yao
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhaoyan Huang
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zuhao Wang
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Huahao Shen
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Ching-Ping Wong
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Can Jiang
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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Hou N, Zhao Y, Jiang R, Nie L, Yang J, Wang Y, Li L, Li X, Zhang W. Flexible piezoresistive sensor based on surface modified dishcloth fibers for wearable electronics device. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Liang Q, Zhang D, Wu Y, Chen S, Han Z, Wang B, Wang H. Self-Stretchable Fiber Liquid Sensors Made with Bacterial Cellulose/Carbon Nanotubes for Smart Diapers. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21319-21329. [PMID: 35471964 DOI: 10.1021/acsami.2c00960] [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: 06/14/2023]
Abstract
Liquid sensors for detecting water and body fluids are crucial in daily water usage and health monitoring, but it is challenging to combine sensing performance with high tensile deformation and multifunctional applications. Here, a substrate-free, self-stretchable bacterial cellulose (BC)/carbon nanotube (CNT) helical fiber liquid sensor was prepared by the solution spinning and coiling process using BC as the water-sensitive matrix and CNTs as the active sensing materials. The BC/CNT (BCT) fiber sensor has a high stretch ratio of more than 1000% and a rapid response for a current change rate of 104% within 1 s, which is almost unaffected under washing and various stretching or knotting deformations. By combination of the BCT fiber, we can design smart diapers or water level detectors, which rapidly monitor the status of smart diapers or water level, and the monitoring result can be transferred on time through an alarm device or smartphone. In short, the scalable and continuous preparation of the self-stretchable BCT helical fiber will provide a capacious platform for the development of a wearable sensor applied in daily life (such as smart diapers, water level detection, etc.).
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Affiliation(s)
- Qianqian Liang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Dong Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Yuchen Wu
- College of Information Sciences and Technology, Donghua University, Shanghai 201620, PR China
| | - Shiyan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Zhiliang Han
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Baoxiu Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China
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Ismail Z, W Idris WF, Abdullah AH. Graphene-based temperature, humidity, and strain sensor: A review on progress, characterization, and potential applications during Covid-19 pandemic. SENSORS INTERNATIONAL 2022; 3:100183. [PMID: 35633818 PMCID: PMC9126002 DOI: 10.1016/j.sintl.2022.100183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 11/24/2022] Open
Abstract
Graphene's potential as material for wearable, highly sensitive and robust sensor in various fields of technology has been widely investigated until now in order to capitalize on its unique intrinsic physical and chemical properties. In the wake of Covid-19 pandemic, it has been noticed that there are various potentials roles that can be fulfilled by graphene-based temperature, humidity and strain sensor, whose roles has not been widely explored to date. This paper takes the liberty to mainly highlight the progress layout and characterization technique for graphene-based sensor while including a brief discussion on the possible strategy of sensing data analysis that can be employed to minimize and prevent the risk of Covid-19 infection within a living community. While majority of the reported sensor is still in the in-progress status, its highlighted role in this work may provide a brief idea on how the ongoing research in graphene-based sensor may lead to the future implementation of the device for routine healthcare check-up and diagnostic point-care during and post-pandemic era. On the other hand, the sensitivity and response time data against working temperature, humidity and strain range that are provided could serve as a reference for benchmarking purpose, which certainly would help enthusiast in the development of a graphene-based sensor with a better performance for the future.
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Wei Y, Li X, Wang Y, Hirtz T, Guo Z, Qiao Y, Cui T, Tian H, Yang Y, Ren TL. Graphene-Based Multifunctional Textile for Sensing and Actuating. ACS NANO 2021; 15:17738-17747. [PMID: 34723481 DOI: 10.1021/acsnano.1c05701] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Textiles are materials that are extensively used in everyday life; textile-based sensors can, therefore, be regarded as ideal devices for a health monitor. However, previously reported textile sensors have limited prospects due to their single function or incompatibility. Traditional textile sensors generally focus on signal detection, which has not been able to be combined with an actuator to provide real-time health status feedback. Thus, to date, there are no well-established health monitoring systems based on intelligent textiles. Herein, we present a wearable batch-prepared graphene-based textile based on laser-scribing and thermal-transfer technology. Integrated with four functions of strain sensing, pressure sensing, physiological electrical sensing, and sound emitting, the GT is able to detect human body signals and transduce them to sound signals when the user is in an abnormal physical state. Moreover, the GT has high linearity for both strain and pressure sensing; the coefficients of determination exceed 99.3% and 98.2%, respectively. The performance of the device remains stable up to a pressure of 1000 kPa. The response time of the GT possession reaches as low as 85 ms at 4.2 Pa pressure. Therefore, due to their diversified functions and good performance, the research on GT is expected to extend to the fields of health monitoring, sports monitoring, and so forth.
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Affiliation(s)
- Yuhong Wei
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Xiaoshi Li
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Yunfan Wang
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
| | - Thomas Hirtz
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Zhanfeng Guo
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Yancong Qiao
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Tianrui Cui
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - He Tian
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Yi Yang
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Tian-Ling Ren
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
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Huang CB, Yao Y, Montes-García V, Stoeckel MA, Von Holst M, Ciesielski A, Samorì P. Highly Sensitive Strain Sensors Based on Molecules-Gold Nanoparticles Networks for High-Resolution Human Pulse Analysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007593. [PMID: 33464719 DOI: 10.1002/smll.202007593] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/10/2020] [Indexed: 06/12/2023]
Abstract
High-performance flexible strain sensors are key components for the next generation of wearable health monitoring devices. Here, the authors have fabricated a novel strain sensor based on gold nanoparticles (AuNPs) interconnected by flexible and responsive molecular linkers. The combination of conductive AuNPs (25 nm in diameter) with tetra(ethylene glycol) dithiol (SH-TEG-SH) linkers yields a covalent 3D network which can be directly deposited onto prepatterned flexible supports exposing interdigitated Au electrodes. The electrically insulating nature of the linkers effectively defines the tunneling modulated charge transfer through the AuNPs network. When compressive/tensile strain is applied, the molecular linkers adopt a compressed/stretched conformation thus decreasing/increasing the interparticle distance, ultimately yielding an exponential increase/decrease of the tunneling current when voltage is applied. The strain sensor displays state-of-the-art performances including a highly sensitive response to both tensile and compressive strain, as quantified by a high gauge factor (GF≈126) combined with other superior sensing properties like high flexibility, short response time (16.1 ms), and good robustness (>2000 cycles). Finally, the applicability of the device for health monitoring is demonstrated: high-resolution artery pulse waves are acquired by placing the strain sensor onto the skin allowing the extraction of important physical parameters for human-health assessment.
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Affiliation(s)
- Chang-Bo Huang
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Yifan Yao
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Verónica Montes-García
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Marc-Antoine Stoeckel
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Miriam Von Holst
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Artur Ciesielski
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Paolo Samorì
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
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8
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Wang T, Ouyang Z, Wang F, Liu Y. A review on graphene strain sensors based on fiber assemblies. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2641-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Zhou CG, Sun WJ, Jia LC, Xu L, Dai K, Yan DX, Li ZM. Highly Stretchable and Sensitive Strain Sensor with Porous Segregated Conductive Network. ACS APPLIED MATERIALS & INTERFACES 2019; 11:37094-37102. [PMID: 31512856 DOI: 10.1021/acsami.9b12504] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Flexible strain sensors based on elastomeric conductive polymer composites (ECPCs) play an important role in wearable sensing electronics. However, the achievement of good conjunction between broad detection range and high sensitivity is still challenging. Herein, a highly stretchable and sensitive strain sensor was developed with the formation of porous segregated conductive network in the carbon nanotube/thermoplastic polyurethane composite via a facile and nontoxic compression-molding plus salt-leaching method. The strain sensor with porous segregated conductive network exhibited perfect combination of ultrawide sensing range (800% strain), large sensitivity (gauge factor of 356.4), short response time (180 ms) and recovery time (180 ms), as well as superior stability and durability. The integrated porous structure intensifies the deformation of segregated conductive network when tension strain is applied, which benefits enhancement of the sensitivity. Our sensor could monitor not only subtle oscillation and physiological signals but also energetic human motions efficiently, revealing promising potential applications in wearable motion monitoring systems. This work provides a unique and effective strategy for realizing ECPCs based strain sensors with excellent comprehensive sensing performances.
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Affiliation(s)
| | | | | | | | - Kun Dai
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
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10
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Miao P, Wang J, Zhang C, Sun M, Cheng S, Liu H. Graphene Nanostructure-Based Tactile Sensors for Electronic Skin Applications. NANO-MICRO LETTERS 2019; 11:71. [PMID: 34138011 PMCID: PMC7770800 DOI: 10.1007/s40820-019-0302-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/13/2019] [Indexed: 05/05/2023]
Abstract
Skin is the largest organ of the human body and can perceive and respond to complex environmental stimulations. Recently, the development of electronic skin (E-skin) for the mimicry of the human sensory system has drawn great attention due to its potential applications in wearable human health monitoring and care systems, advanced robotics, artificial intelligence, and human-machine interfaces. Tactile sense is one of the most important senses of human skin that has attracted special attention. The ability to obtain unique functions using diverse assembly processible methods has rapidly advanced the use of graphene, the most celebrated two-dimensional material, in electronic tactile sensing devices. With a special emphasis on the works achieved since 2016, this review begins with the assembly and modification of graphene materials and then critically and comprehensively summarizes the most advanced material assembly methods, device construction technologies and signal characterization approaches in pressure and strain detection based on graphene and its derivative materials. This review emphasizes on: (1) the underlying working principles of these types of sensors and the unique roles and advantages of graphene materials; (2) state-of-the-art protocols recently developed for high-performance tactile sensing, including representative examples; and (3) perspectives and current challenges for graphene-based tactile sensors in E-skin applications. A summary of these cutting-edge developments intends to provide readers with a deep understanding of the future design of high-quality tactile sensing devices and paves a path for their future commercial applications in the field of E-skin.
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Affiliation(s)
- Pei Miao
- Institute for Advanced Interdisciplinary Research, Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China
- Department of Chemistry, School of Chemistry and Chemical Engineering, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China
| | - Jian Wang
- Institute for Advanced Interdisciplinary Research, Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China
| | - Congcong Zhang
- Institute for Advanced Interdisciplinary Research, Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China.
| | - Mingyuan Sun
- Institute for Advanced Interdisciplinary Research, Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China
| | - Shanshan Cheng
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, School of Science, Tianjin University, 92 Weijin Road, Tianjin, 300072, People's Republic of China.
| | - Hong Liu
- Institute for Advanced Interdisciplinary Research, Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, University of Jinan, 336 Nanxinzhuang West Road, Jinan, 250011, People's Republic of China.
- Center of Bio and Micro/Nano Functional Materials, State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda South Road, Jinan, 250100, People's Republic of China.
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Zhou Y, Zhan P, Ren M, Zheng G, Dai K, Mi L, Liu C, Shen C. Significant Stretchability Enhancement of a Crack-Based Strain Sensor Combined with High Sensitivity and Superior Durability for Motion Monitoring. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7405-7414. [PMID: 30698944 DOI: 10.1021/acsami.8b20768] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Flexible strain sensors have attracted tremendous interest due to their potential application as intelligent wearable sensing devices. Among them, crack-based flexible strain sensors have been studied extensively owing to their ultrahigh sensitivity. Nevertheless, the detection range of a crack-based sensor is quite narrow, limiting its application. In this work, a stretchable strain sensor based on a designed crack structure was fabricated by spray-coating carbon nanotube (CNT) ink onto an electrospun thermoplastic polyurethane (TPU) fibrous mat and prestretching treatment to overcome the trade-off relationship. Our sensor exhibited combined features of high sensitivity in a greatly widened workable sensing range [a gauge factor of 428.5 within 100% strain, 9268.8 for a strain of 100-220%, and larger than 83982.8 for a strain of 220-300%], a fast response time (about 70 ms), superior durability (>10 000 stretching-releasing cycles), and excellent response toward bending. The microstructural evolution of CNT branches extending from two edges of the cracks and the excellent stretchability of TPU fibrous mats are mainly related to the remarkable sensing properties. Our sensor is then assembled to detect various human motions and physical vibrational signals, demonstrating its potential applications in intelligent devices, electronic skins, and wearable healthcare monitors.
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Affiliation(s)
- Yujie Zhou
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Pengfei Zhan
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Miaoning Ren
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Guoqiang Zheng
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Kun Dai
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Liwei Mi
- Center for Advanced Materials Research, School of Materials and Chemical Engineering , Zhongyuan University of Technology , Zhengzhou 450007 , China
| | - Chuntai Liu
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Changyu Shen
- School of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , China
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12
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Fokker MC, Janbaz S, Zadpoor AA. Crumpling of thin sheets as a basis for creating mechanical metamaterials. RSC Adv 2019; 9:5174-5188. [PMID: 35514658 PMCID: PMC9060670 DOI: 10.1039/c8ra07565d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/26/2019] [Indexed: 01/18/2023] Open
Abstract
Crumpled thin sheets exhibit extraordinary characteristics such as a high strength combined with a low volume ratio. This review focuses on the physics of crumpled thin sheets, including the crumpling mechanics, crumpling methods, and the mechanical behavior of crumpled thin sheets. Most of the physical and mechanical properties of crumpled thin sheets change with the compaction ratio, which creates the opportunity to obtain the properties that are needed for a specific application simply by changing the compaction ratio. This also enables obtaining unusual combinations of material properties, which cannot be easily found in nature. Furthermore, crumpling starts from a flat surface, which could first be decorated with (nano-) patterns or functionalized through other surface treatment techniques, many of which are only applicable to flat surfaces. Ultimately, the crumpling of thin sheets could be used for creating disordered mechanical metamaterials, which are less sensitive to geometric imperfections compared to ordered designs of mechanical metamaterials that are based, for example, on origami or lattice structures. Random formation of layers and ridges through the crumpling of a flat matter can form a robust mechanical metamaterial.![]()
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Affiliation(s)
- M. C. Fokker
- Department of Biomechanical Engineering
- Faculty of Mechanical, Maritime and Materials Engineering
- Delft University of Technology
- Delft 2628CD
- The Netherlands
| | - S. Janbaz
- Department of Biomechanical Engineering
- Faculty of Mechanical, Maritime and Materials Engineering
- Delft University of Technology
- Delft 2628CD
- The Netherlands
| | - A. A. Zadpoor
- Department of Biomechanical Engineering
- Faculty of Mechanical, Maritime and Materials Engineering
- Delft University of Technology
- Delft 2628CD
- The Netherlands
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Ge G, Cai Y, Dong Q, Zhang Y, Shao J, Huang W, Dong X. A flexible pressure sensor based on rGO/polyaniline wrapped sponge with tunable sensitivity for human motion detection. NANOSCALE 2018; 10:10033-10040. [PMID: 29774921 DOI: 10.1039/c8nr02813c] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
High-performance stretchable and wearable electronic skins (E-skins) with high sensitivity and a large sensing range are urgently required with the rapid development of the Internet of things and artificial intelligence. Herein, a reduced graphene oxide (rGO)/polyaniline wrapped sponge is prepared via rGO coating and the in situ synthesis of polyaniline nanowires (PANI NWs) on the backbones of sponge for the fabrication of pressure sensors. From the as-prepared flexible sensor, tunable sensitivity (0.042 to 0.152 kPa-1), wide working range (0-27 kPa), fast response (∼96 ms), high current output (∼300 μA at 1 V), frequency-dependent performance reliable repeatability (∼9000 cycle) and stable signal waveform output can be readily obtained. In addition to tiny physiological activities (voice recognition, swallowing, mouth opening, blowing and breath), robust human motions (finger bending, elbow movement and knee squatting-arising) can also be detected in real-time by the flexible sensors based on rGO/polyaniline wrapped sponge. All the results demonstrate that the flexible pressure sensor based on the functional-sponge is a promising candidate for healthcare monitoring and wearable circuitry in artificial intelligence.
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Affiliation(s)
- Gang Ge
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211800, China.
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14
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Yang L, Qi K, Chang L, Xu A, Hu Y, Zhai H, Lu P. A powerful dual-responsive soft actuator and photo-to-electric generator based on graphene micro-gasbags for bioinspired applications. J Mater Chem B 2018; 6:5031-5038. [DOI: 10.1039/c8tb01222a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
High-performance dual-responsive soft actuators with internal graphene micro-gasbags are fabricated and used to realize diverse biomimetic motions.
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Affiliation(s)
- Lulu Yang
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
| | - Ke Qi
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
| | - Longfei Chang
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
| | - Aifeng Xu
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
| | - Ying Hu
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province
| | - Hua Zhai
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
| | - Pin Lu
- Institute of Industry & Equipment Technology
- Hefei University of Technology
- Hefei
- P. R. China
- State Key Laboratory for Strength and Vibration of Mechanical Structures
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15
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Cai S, Liu X, Huang J, Liu Z. Feasibility of polyethylene film as both supporting material for transfer and target substrate for flexible strain sensor of CVD graphene grown on Cu foil. RSC Adv 2017. [DOI: 10.1039/c7ra09492b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Facile utilization of polyethylene (PE) film as both the supporting material for graphene transfer from copper foil and the target substrate for flexible strain sensor preparation in a single route.
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Affiliation(s)
- Shuxian Cai
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hunan Agricultural University
- Changsha
- China
- Key Laboratory of Ministry of Education for TEA Science
| | - Xingfang Liu
- Key Laboratory of Semiconductor Materials Science
- Institute of Semiconductors
- Chinese Academy of Sciences
- Beijing 100083
- China
| | - Jianan Huang
- Key Laboratory of Ministry of Education for TEA Science
- Hunan Agricultural University
- Changsha
- China
| | - Zhonghua Liu
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients
- Hunan Agricultural University
- Changsha
- China
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