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Liu J, Zhang X, Liu J, Liu X, Zhang C. 3D Printing of Anisotropic Piezoresistive Pressure Sensors for Directional Force Perception. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309607. [PMID: 38477389 PMCID: PMC11199969 DOI: 10.1002/advs.202309607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/03/2024] [Indexed: 03/14/2024]
Abstract
Anisotropic pressure sensors are gaining increasing attention for next-generation wearable electronics and intelligent infrastructure owing to their sensitivity in identifying different directional forces. 3D printing technologies have unparalleled advantages in the design of anisotropic pressure sensors with customized 3D structures for realizing tunable anisotropy. 3D printing has demonstrated few successes in utilizing piezoelectric nanocomposites for anisotropic recognition. However, 3D-printed anisotropic piezoresistive pressure sensors (PPSs) remain unexplored despite their convenience in saving the poling process. This study pioneers the development of an aqueous printable ink containing waterborne polyurethane elastomer. An anisotropic PPS featuring tailorable flexibility in macroscopic 3D structures and microscopic pore morphologies is created by adopting direct ink writing 3D printing technology. Consequently, the desired directional force perception is achieved by programming the printing schemes. Notably, the printed PPS demonstrated excellent deformability, with a relative sensitivity of 1.22 (kPa*wt. %)-1 over a substantial pressure range (2.8 to 8.1 kPa), approximately fivefold than that of a state-of-the-art carbon-based PPS. This study underscores the versatility of 3D printing in customizing highly sensitive anisotropic pressure sensors for advanced sensing applications that are difficult to achieve using conventional measures.
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Affiliation(s)
- Jingfeng Liu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityChengdu610065China
| | - Xuan Zhang
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityChengdu610065China
| | - Jintao Liu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityChengdu610065China
| | - Xingang Liu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityChengdu610065China
| | - Chuhong Zhang
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityChengdu610065China
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2
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Ma H, Jiang Q, Ma X, Chen R, Hua K, Yang X, Ge J, Ji J, Xue M. Coaxial Graphene/MXene Microfibers with Interfacial Buffer-Based Lightweight Distance Sensors Assisting Lossless Grasping of Fragile and Deformable Objects. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4530-4536. [PMID: 36919933 DOI: 10.1021/acs.langmuir.3c00374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lossless and efficient robotic grasping is becoming increasingly important with the widespread application of intelligent robotics in warehouse transportation, human healthcare, and domestic services. However, current sensors for feedback of grasping behavior are greatly restricted by high manufacturing cost, large volume and mass, complex circuit, and signal crosstalk. To solve these problems, here, we prepare lightweight distance sensor-based reduced graphene oxide (rGO)/MXene-rGO coaxial microfibers with interface buffer to assist lossless grasping of a robotic manipulator. The as-fabricated distance microsensor exhibits a high sensitivity of 91.2 m-1 in the distance range of 50-300 μm, a fast response time of 116 ms, a high resolution of 5 μm, and good stability in 500 cycles. Furthermore, the high-performance and lightweight microsensor is installed on the robotic manipulator to reflect the grasp state by the displacement imposed on the sensor. By establishing the correlation between the microsensing signal and the grasp state, the safe, non-destructive, and effective grasp and release of the target can be achieved. The lightweight and high-powered distance sensor displays great application prospects in intelligent fetching, medical surgery, multi-spindle automatic machines, and cultural relics excavation.
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Affiliation(s)
- Hui Ma
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianqian Jiang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xinlei Ma
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Ruoqi Chen
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Hua
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing 100029, China
| | - Xiubin Yang
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing 100029, China
| | - Jiechao Ge
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Junhui Ji
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Mianqi Xue
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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Wu J, Fan X, Liu X, Ji X, Shi X, Wu W, Yue Z, Liang J. Highly Sensitive Temperature-Pressure Bimodal Aerogel with Stimulus Discriminability for Human Physiological Monitoring. NANO LETTERS 2022; 22:4459-4467. [PMID: 35608193 DOI: 10.1021/acs.nanolett.2c01145] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Multimodal sensor with high sensitivity, accurate sensing resolution, and stimuli discriminability is very desirable for human physiological state monitoring. A dual-sensing aerogel is fabricated with independent pyro-piezoresistive behavior by leveraging MXene and semicrystalline polymer to assemble shrinkable nanochannel structures inside multilevel cellular walls of aerogel for discriminable temperature and pressure sensing. The shrinkable nanochannels, controlled by the melt flow-triggered volume change of semicrystalline polymer, act as thermoresponsive conductive channels to endow the pyroresistive aerogel with negative temperature coefficient of resistance of -10.0% °C-1 and high accuracy within 0.2 °C in human physiological temperature range of 30-40 °C. The flexible cellular walls, working as pressure-responsive conductive channels, enable the piezoresistive aerogel to exhibit a pressure sensitivity up to 777 kPa-1 with a detectable pressure limit of 0.05 Pa. The pyro-piezoresistive aerogel can detect the temperature-dependent characteristics of pulse pressure waveforms from artery vessels under different human body temperature states.
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Affiliation(s)
- Jinhua Wu
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
| | - Xiangqian Fan
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
| | - Xue Liu
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
| | - Xinyi Ji
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
| | - Xinlei Shi
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
| | - Wenbin Wu
- Department of Microelectronics, Nankai University, Tianjin 300350, China
| | - Zhao Yue
- Department of Microelectronics, Nankai University, Tianjin 300350, China
| | - Jiajie Liang
- School of Materials Science and Engineering, National Institute for Advanced Materials Nankai University, Tianjin 300350, China
- Key Laboratory of Functional Polymer Materials of Ministry of Education, College of Chemistry, Nankai University, Tianjin 300350, China
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300350, China
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Shirhatti V, Nuthalapati S, Kedambaimoole V, Kumar S, Nayak MM, Rajanna K. Multifunctional Graphene Sensor Ensemble as a Smart Biomonitoring Fashion Accessory. ACS Sens 2021; 6:4325-4337. [PMID: 34847320 DOI: 10.1021/acssensors.1c01393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Biomonitoring wearable sensors based on two-dimensional nanomaterials have recently elicited keen research interest and potential for a new range of flexible nanoelectronic devices. Practical nanomaterial-based devices suited for real-world service, which exhibit first-rate performance while being an attractive accessory, are still distant. We report a multifunctional flexible wearable sensor fabricated using an ultrathin percolative layer of graphene nanosheets on laser-patterned gold circular interdigitated electrodes for monitoring vital human physiological parameters. This graphene on laser-patterned electrode (GLE) sensor displays an excellent strain resolution of 245 με (0.024%) and a record high gauge factor of 6.3 × 107, with exceptional stability and repeatability in its operating range. The sensor was tested for human physiological monitoring like measurement of heart rate, breathing rate, body temperature, and hydration level, which are vital health parameters, especially considering the current pandemic scenario. The sensor also served in applications such as a pedometer, limb movement tracker, and control switch for human interaction. The innovative laser-etch process used to pattern gold thin-film electrodes, with the multifunctional incognizable graphene layer, provides a technique for integrating multiple sensors in a wearable band. The reported work marks a giant leap from the conventional banal devices to a highly marketable multifunctional sensor array as a biomonitoring fashion accessory.
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Affiliation(s)
- Vijay Shirhatti
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
| | - Suresh Nuthalapati
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
| | - Vaishakh Kedambaimoole
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
| | - Saurabh Kumar
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | | | - Konandur Rajanna
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
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5
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Nguyen TD, Lee JS. Recent Development of Flexible Tactile Sensors and Their Applications. SENSORS (BASEL, SWITZERLAND) 2021; 22:s22010050. [PMID: 35009588 PMCID: PMC8747637 DOI: 10.3390/s22010050] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/10/2021] [Accepted: 12/20/2021] [Indexed: 05/15/2023]
Abstract
With the rapid development of society in recent decades, the wearable sensor has attracted attention for motion-based health care and artificial applications. However, there are still many limitations to applying them in real life, particularly the inconvenience that comes from their large size and non-flexible systems. To solve these problems, flexible small-sized sensors that use body motion as a stimulus are studied to directly collect more accurate and diverse signals. In particular, tactile sensors are applied directly on the skin and provide input signals of motion change for the flexible reading device. This review provides information about different types of tactile sensors and their working mechanisms that are piezoresistive, piezocapacitive, piezoelectric, and triboelectric. Moreover, this review presents not only the applications of the tactile sensor in motion sensing and health care monitoring, but also their contributions in the field of artificial intelligence in recent years. Other applications, such as human behavior studies, are also suggested.
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Affiliation(s)
| | - Jun Seop Lee
- Correspondence: ; Tel.: +82-31-750-5814; Fax: +82-31-750-5389
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Jiang Q, Ma X, Chai Y, Ma H, Tang F, Hua K, Chen R, Jin Z, Wang X, Ji J, Yang X, Li R, Lian H, Xue M. Reduced Graphene Oxide-Polypyrrole Aerogel-Based Coaxial Heterogeneous Microfiber Enables Ultrasensitive Pressure Monitoring of Living Organisms. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5425-5434. [PMID: 33496177 DOI: 10.1021/acsami.0c19949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pressure sensors for living organisms can monitor both the movement behavior of the organism and pressure changes of the organ, and they have vast perspectives for the health management information platform and disease diagnostics/treatment through the micropressure changes of organs. Although pressure sensors have been widely integrated with e-skin or other wearable systems for health monitoring, they have not been approved for comprehensive surveillance and monitoring of living organisms due to their unsatisfied sensing performance. To solve the problem, here, we introduce a novel structural design strategy to manufacture reduced graphene oxide-polypyrrole aerogel-based microfibers with a typical coaxial heterogeneous structure, which significantly enhances the sensitivity, resolution, and stability of the derived pressure microsensors. The as-fabricated pressure microsensors exhibit ultrahigh sensitivities of 12.84, 18.27, and 4.46 kPa-1 in the pressure ranges of 0-20, 20-40, and 40-65 Pa, respectively, high resolution (0.2 Pa), and good stability in 450 cycles. Furthermore, the microsensor is applied to detect the movement behavior and organic micropressure changes for mice and serves as a platform for monitoring micropressure for the integrative diagnosis both in vivo and in vitro of organisms.
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Affiliation(s)
- Qianqian Jiang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical & Environmental Engineering, China University of Mining & Technology Beijing, Beijing 100083, China
| | - Xinlei Ma
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yuqiao Chai
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hui Ma
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Feng Tang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Kun Hua
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing 100029, China
| | - Ruoqi Chen
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhaoxia Jin
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Xusheng Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Junhui Ji
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiubin Yang
- Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing 100029, China
| | - Rui Li
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Huiqin Lian
- College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Mianqi Xue
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Beijing National Laboratory for Molecular Sciences, Beijing 100190, China
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7
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Cao M, Fan S, Qiu H, Su D, Li L, Su J. CB Nanoparticles Optimized 3D Wearable Graphene Multifunctional Piezoresistive Sensor Framed by Loofah Sponge. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36540-36547. [PMID: 32678977 DOI: 10.1021/acsami.0c09813] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Three-dimensional (3D) wearable piezoresistive sensors with excellent performance are urgently needed in many emerging fields. Herein, a hybrid piezoresistive sensor with 3D structure, which is framed by loofah sponge and coated with reduced graphene oxide modified with carbon black nanoparticles (rGO-CB@LS), was obtained via a facile solvothermal method. The ingenious use of loofah sponge (LS) provides a 3D highly ordered structure with excellent flexibility for the hybrid sensor, which assists the sensor free from the dependence on an organic substrate and eliminates the pollution to the environment. While the addition of carbon black (CB) nanoparticles can reduce the contact resistance between rGO sheets, improve the conductivity and sensitivity effectively, and shorten the response/recovery time of the sensor. An ultralight piezoresistive sensor, which is low cost and environmentally friendly, was obtained under the synergy of LS and rGO-CB, accompanied by high sensitivity and good stability. This novel sensor also exhibits excellent performance in detecting tiny and big human activities, demonstrating its great potential for a new generation of 3D wearable sensors.
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Affiliation(s)
- Minghui Cao
- School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
| | - Shuangqing Fan
- School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
| | - Hengwei Qiu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dongliang Su
- School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
| | - Le Li
- Shaanxi Key Laboratory of Industrial Automation, School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Jie Su
- School of Electronic and Information Engineering, Qingdao University, Qingdao 266071, China
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8
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Chai Y, Ma X, Jiang Y, Xiao D, Xue M. Realizing Long‐Range Orientational Order in Conjugated Polymers via Solventless Polymerization Strategy. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900534] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yuqiao Chai
- Technical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xinlei Ma
- Department of ChemistryRenmin University of China Beijing 100872 China
| | - Yuqian Jiang
- Laboratory for Nanosystem and Hierarchy FabricationNational Center for Nanoscience and Technology Beijing 100190 China
| | - Dongdong Xiao
- Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Beijing 100190 China
| | - Mianqi Xue
- Technical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 China
- Beijing National Laboratory for Molecular Sciences Beijing 100190 China
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9
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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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10
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Highly faceted layered orientation in SnSSe nanosheets enables facile Li+-Diffusion channels. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Wang X, Zang X, Jiang Y, Liu Q, Chang S, Ji J, Zhao H, Liu Y, Xue M. A graphene-based smart thermal conductive system regulated by a reversible pressure-induced mechanism. NANOSCALE 2019; 11:11730-11735. [PMID: 31180401 DOI: 10.1039/c9nr02160d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermal dissipation and thermal insulation are important for maintaining the normal operation of devices, extending the service life of instruments, ensuring efficient energy utilization, and improving temperature-related human comfort. Yet it is difficult to achieve both the functions of thermal dissipation and thermal insulation in a single material with a specific thermal conductivity under specific conditions. In this work, based on the huge difference in thermal conductivity between air and reduced graphene oxide (rGO), a pressure-induced mechanism is used to regulate the amount of air inside an rGO foam, so that a periodic reversible change of thermal conductivity can be realized, achieving the dual functions of thermal dissipation and thermal insulation to meet the requirements of different application scenarios. Further fitting calculations suggest that the thermal conductivity of rGO foam is positively and negatively associated with the applied pressure and temperature, respectively, and it can be calculated for given pressure and temperature conditions. The pressure-induced reversible regulation of thermal conductivity in rGO foam provides a new design construct for smart thermal-management devices, and a new direction of application for 2D materials.
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Affiliation(s)
- Xusheng Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
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12
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Ding Y, Xu T, Onyilagha O, Fong H, Zhu Z. Recent Advances in Flexible and Wearable Pressure Sensors Based on Piezoresistive 3D Monolithic Conductive Sponges. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6685-6704. [PMID: 30689335 DOI: 10.1021/acsami.8b20929] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
High-performance flexible strain and pressure sensors are important components of the systems for human motion detection, human-machine interaction, soft robotics, electronic skin, etc., which are envisioned as the key technologies for applications in future human healthcare monitoring and artificial intelligence. In recent years, highly flexible and wearable strain/pressure sensors have been developed based on various materials/structures and transduction mechanisms. Piezoresistive three-dimensional (3D) monolithic conductive sponge, the resistance of which changes upon external pressure or stimuli, has emerged as a forefront material for flexible and wearable pressure sensor due to its excellent sensor performance, facile fabrication, and simple circuit integration. This review focuses on the rapid development of the piezoresistive pressure sensors based on 3D conductive sponges. Various piezoresistive conductive sponges are categorized into four different types and their material and structural characteristics are summarized. Methods for preparation of the 3D conductive sponges are reviewed, followed by examples of device performance and selected applications. The review concludes with a critical reflection of the current status and challenges. Prospects of the 3D conductive sponge for flexible and wearable pressure sensor are discussed.
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13
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Zhu Y, Cai H, Ding H, Pan N, Wang X. Fabrication of Low-Cost and Highly Sensitive Graphene-Based Pressure Sensors by Direct Laser Scribing Polydimethylsiloxane. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6195-6200. [PMID: 30666869 DOI: 10.1021/acsami.8b17085] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The cost-effective production of flexible interconnects is a challenge in epidermal electronics. Here we report a low-cost approach for producing and patterning graphene films from polydimethylsiloxane films by direct laser scribing in ambient air. The produced graphene films exhibit high electrical conductivity and excellent mechanical properties and can thus be used directly as a flexible conductive layer without the need for metals. The skinlike pressure sensor with these layers exhibits ultrahigh sensitivity (∼480 kPa-1) while maintaining the fast response/relaxation time (2 μs/3 μs) and excellent cycle stability (>4000 repetitive cycles). Moreover, it can naturally attach to the skin to monitor the wrist pulse. In addition, a 7 × 7 sensor array has been fabricated, which possesses the capability to detect the spatial distribution of pressure. This device has great potential for application in epidermal electronics because of its low cost and high performance.
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Affiliation(s)
- Yunsong Zhu
- Department of Physics , University of Science and Technology of China , Hefei 230026 , China
| | - Hongbing Cai
- Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Huaiyi Ding
- Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Nan Pan
- Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, School of Physical Sciences , Chinese Academy of Sciences, University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Xiaoping Wang
- Department of Physics , University of Science and Technology of China , Hefei 230026 , China
- Hefei National Laboratory for Physical Sciences at the Microscale , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, School of Physical Sciences , Chinese Academy of Sciences, University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
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14
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Jiang H, Cheng XL. Simulations on methane uptake in tunable pillared porous graphene hybrid architectures. J Mol Graph Model 2018; 85:223-231. [DOI: 10.1016/j.jmgm.2018.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/30/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022]
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15
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Deng W, Wang X, Liu C, Li C, Xue M, Li R, Pan F. Touching the theoretical capacity: synthesizing cubic LiTi 2(PO 4) 3/C nanocomposites for high-performance lithium-ion battery. NANOSCALE 2018; 10:6282-6287. [PMID: 29569675 DOI: 10.1039/c7nr09684d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A cubic LiTi2(PO4)3/C composite is successfully prepared via a simple solvothermal method and further glucose-pyrolysis treatment. The as-fabricated LTP/C material delivers an ultra-high reversible capacity of 144 mA h g-1 at 0.2C rate, which is the highest ever reported, and shows considerable performance improvement compared with before. Combining this with the stable cycling performance and high rate capability, such material has a promising future in practical application.
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Affiliation(s)
- Wenjun Deng
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
| | - Xusheng Wang
- Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Chunyi Liu
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
| | - Chang Li
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
| | - Mianqi Xue
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China. and Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Rui Li
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
| | - Feng Pan
- School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, PR China.
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