Highly Sensitive and Wide Linear-Response Pressure Sensors Featuring Zero Standby Power Consumption under Bending Conditions

Yi, Chenghan2,3; Hou, Yuxin2,4; He, Ke2,3; Li, Weimin2; Li, Nianci4; Wang, Zhongguo2,3; Yang, Bing2,3; Xu, Shuda2,3; Wang, Heng2,3; Gao, Chuanzeng2,3; Wang, Zhengyan2,3; Gu, Guoqiang5; Wang, Zhixun1; Wei, Lei1; Yang, Chunlei2; Chen, Ming2

2020-04-29

10.1021/acsami.0c02774

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

The ability of a flexible pressure sensor to possess zero power consumption in standby mode, high sensitivity, and wide linear-response range is critical in real flexible matrix-based scenes. However, when the conventional flexible pressure sensors are attached on a curved surface, a pseudosignal response is generated because of the normal stress, resulting in a short linear-response range. Here, a flexible piezoresistive pressure sensor with high performance, zero standby power consumption is demonstrated. The flexible pressure sensor is fabricated from polydimethylsiloxane (PDMS)/carbon black (CB), patterned polyimide (PI) spacer layer, and laser-induced graphene (LIG) interdigital electrodes. Benefiting from the hierarchical structure and sufficient roughness of PDMS/CB and LIG interdigital electrodes, the proposed pressure sensors (PDMS/CB/PI/LIG) exhibit high sensitivity (43 kPa(-1)), large linear-response range (0.4-13.6 kPa), fast response (<40 ms), and long-term cycle stability (>1800 cycles). The resulting pressure sensor also features zero standby power consumption merit under certain bending conditions (bending angle: 0-5 degrees). Furthermore, the effect of the hole diameter of the PI spacer layer on the performance of the pressure sensors is experimentally and theoretically investigated. As a proof of concept, a bioinspired artificial haptic neuron system has been successfully equipped to modulate the number of lit LED lights. The proposed high-performance pressure sensor has promising potential to be used in flexible and wearable electronics, especially for the applications in actual flexible matrix-based scenes.

flexible pressure sensors laser-induced graphene polyimide spacers finite element modeling

SCI ; EI

英语

其他

National Key R&D Program of China[2018YFB1500200] ; Shenzhen Basic Research Grant[JCYJ20180507182431967][JCYJ20170413153246713] ; Shenzhen Peacock Technology Innovation Project[KQJSCX20170731165602155] ; National Nature Science Foundation of China[11804354][61574157][61774164] ; Singapore Ministry of Education Academic Research Fund Tier 2[MOE2015-T2-2-010] ; Singapore Ministry of Education Academic Research Fund Tier 1[MOE2019-T1-001-103]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000529924800035

AMER CHEMICAL SOC

20201808605520

Electrodes ; Flexible electronics ; Polydimethylsiloxane ; Wearable sensors ; Electric power utilization ; Polyimides ; Microchannels ; Pressure sensors ; Finite element method ; Silicones

Electric Power Systems:706.1 ; Electronic Equipment, General Purpose and Industrial:715 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Numerical Methods:921.6 ; Pressure Measuring Instruments:944.3

Web of Science

1.Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
2.Chinese Acad Sci, Ctr Informat Photon & Energy Mat, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China
3.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China
4.Univ Chinese Acad Sci, Sch Comp & Control Engn, Beijing 100049, Peoples R China
5.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Yi, Chenghan,Hou, Yuxin,He, Ke,et al. Highly Sensitive and Wide Linear-Response Pressure Sensors Featuring Zero Standby Power Consumption under Bending Conditions[J]. ACS Applied Materials & Interfaces,2020,12(17):19563-19571.

Yi, Chenghan.,Hou, Yuxin.,He, Ke.,Li, Weimin.,Li, Nianci.,...&Chen, Ming.(2020).Highly Sensitive and Wide Linear-Response Pressure Sensors Featuring Zero Standby Power Consumption under Bending Conditions.ACS Applied Materials & Interfaces,12(17),19563-19571.

Yi, Chenghan,et al."Highly Sensitive and Wide Linear-Response Pressure Sensors Featuring Zero Standby Power Consumption under Bending Conditions".ACS Applied Materials & Interfaces 12.17(2020):19563-19571.