Flexible hemispheric microarrays of highly pressure-sensitive sensors based on breath figure method

Nanoscale
Zhihui WangChunzhong Li

Abstract

Recently, flexible pressure sensors featuring high sensitivity, broad sensing range and real-time detection have aroused great attention owing to their crucial role in the development of artificial intelligent devices and healthcare systems. Herein, highly sensitive pressure sensors based on hemisphere-microarray flexible substrates are fabricated via inversely templating honeycomb structures deriving from a facile and static breath figure process. The interlocked and subtle microstructures greatly improve the sensing characteristics and compressibility of the as-prepared pressure sensor, endowing it a sensitivity as high as 196 kPa-1 and a wide pressure sensing range (0-100 kPa), as well as other superior performance, including a lower detection limit of 0.5 Pa, fast response time (<26 ms) and high reversibility (>10 000 cycles). Based on the outstanding sensing performance, the potential capability of our pressure sensor in capturing physiological information and recognizing speech signals has been demonstrated, indicating promising application in wearable and intelligent electronics.

References

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Citations

Jan 17, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Songyue ZhangKaiyong Cai
Nov 30, 2019·Macromolecular Rapid Communications·Bijun NiJuan Peng
Mar 3, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Congyi WuDawen Zeng
Apr 16, 2021·Science and Technology of Advanced Materials·Chi Cuong VuJooyong Kim
Dec 22, 2020·ACS Applied Materials & Interfaces·Sara Rachel Arussy Ruth, Zhenan Bao
Mar 18, 2020·ACS Applied Materials & Interfaces·Han Byul ChoiSteve Park
Dec 14, 2021·ACS Applied Materials & Interfaces·Li YangHuanyu Cheng

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Methods Mentioned

BETA
scanning electron microscopy

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