Inkjet-Printed ON/OFF Force Sensor on Flexible Substrate for Ultra-Low Power Applications

Proceedings

Bènevent, Evangéline¹ 

关键词: force sensor;    inkjet-printing technology;    flexible substrate;    printed electronics;   

DOI  :  10.3390/proceedings1040620

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

An ON/OFF force sensor is fabricated by inkjet-printing process on flexible substrates. The goal is to obtain two distinct impedance states respectively to the applied force in order to be easily identifiable by a conditioning electronics for ultra-low power applications, and to avoid the use of an analog-to-digital convertor (ADC) in particular. The sensor is composed of two electrodes separated by a spacer. The elastomer layer constituting the spacer is in polydimethylsiloxane (PDMS). An opening is created in this spacer between the two electrodes in order to define an active area. The force is applied perpendicularly to the surface of the sensor. When no force is applied, the sensor’s electrodes are not in contact, and the resistance ROFF tends toward infinity. When a force is applied, the sensor’s electrodes are in contact, and the resistance RON tends toward 0. The minimal actuation force is as low as 0.01N.

【 授权许可】

CC BY