Stretchable tactile sensor with high sensitivity and dynamic stability based on vertically aligned urchin-shaped nanoparticles

doi:10.1016/j.mtphys.2020.100219

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Stretchable tactile sensor with high sensitivity and dynamic stability based on vertically aligned urchin-shaped nanoparticles
	Yu, Z.; Ying, W. B.; Pravarthana, D.; Li, Y. Y.; Mao, G. Y.; Liu, Y. W.; Hu, C.; Zhang, W. X.; He, P. X.; Zhong, Z. C.
刊名	MATERIALS TODAY PHYSICS
	2020
卷号	14
关键词	PRESSURE SENSORS SKIN TRANSPARENT COMPOSITE RUBBER ARRAY
DOI	10.1016/j.mtphys.2020.100219
英文摘要	Stretchable tactile sensor (STS) is promising for wearable electrical devices, human-machine interfaces, and electronic skin. However, developing a STS based on piezoresistive composite high-pressure sensitivity and dynamic stability remains challenging because stretching deformation destroys the original dispersed state of conductive fillers. This interference of stretching strain on the pressure sensing greatly reduces device performance. Here, we realize an STS based on a piezoresistive composite with different elastic modulus in its functional regions. The composite contains high elastic modulus region (59.1 MPa) of vertically aligned columns of urchin-shaped nanoparticles, and low elastic modulus region (2.4 MPa) of pure matrix. The sensor exhibits high-pressure sensitivity (12.05 kPa(-1)) owing to the increased conductive contact area between urchin-shaped nanoparticles in the high elastic modulus region. While stretching to 400% strain, the sensor exhibits excellent dynamic stability via strain accommodation in the low elastic modulus region. Our design to separate sensing from multiple stimulus by elastic modulus regulation is easy operative and universal. In addition, the sensor has a low hysteresis coefficient (5.25%), a good detection limit (22 mg), a low response/recovery time (<50 ms), and an excellent mechanical durability (cycled 10,000 times). Finally, we demonstrate the use of our STS for several important stretchable electronic applications to show the feasibility of our design. (C) 2020 Elsevier Ltd. All rights reserved.
学科主题	Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20605]
专题	2020专题
作者单位	1.Zhang, RY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Biobased Polymer Mat Technol & Applicat Z, Ningbo 315201, Peoples R China. 2.Li, RW (corresponding author), Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China. 3.Li, RW (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. 4.Shang, J 5.Li, RW (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Yu, Z.,Ying, W. B.,Pravarthana, D.,et al. Stretchable tactile sensor with high sensitivity and dynamic stability based on vertically aligned urchin-shaped nanoparticles[J]. MATERIALS TODAY PHYSICS,2020,14.
APA	Yu, Z..,Ying, W. B..,Pravarthana, D..,Li, Y. Y..,Mao, G. Y..,...&Li, R-W.(2020).Stretchable tactile sensor with high sensitivity and dynamic stability based on vertically aligned urchin-shaped nanoparticles.MATERIALS TODAY PHYSICS,14.
MLA	Yu, Z.,et al."Stretchable tactile sensor with high sensitivity and dynamic stability based on vertically aligned urchin-shaped nanoparticles".MATERIALS TODAY PHYSICS 14(2020).