Skin-Adhesive Flexible Force Sensors Based on Piezoelectric Poly(l-lactic acid) for Human Behavior Recognition

Lin，Chubin1; Wu，Wenjin1; Zhu，Huiyu1; Qiu，Yuhui1; Cui，Shaolong1; Chen，Weiquan1; Babichuk，Ivan S.1,2; Ye，Terry Tao1,3; Gao，Zhaoli1,4,5; Yang，Jian1

2023

10.1002/admt.202202142

Advanced Materials Technologies   Impact Factor & Quartile

2365-709X

2365-709X

The application of biodegradable films based on the piezoelectric effect of poly-l-lactic acid (PLLA) in sensors, transducers, actuators, and so on has gradually become one of the emerging research focuses. In this work, a flexible PLLA sensor with UV-curable acrylate film packaging is proposed for human behavior recognition. The acrylic films with different proportions have different mechanical and surface properties, showing good flexibility, ductility, and skin adhesion. The morphology and crystal structure of the PLLA films and UV curable substrate obtained under the various postprocessing conditions and different proportions are examined by scanning electron microscopy, X-ray diffraction, Raman, and ATR-FTIR spectroscopy. In addition, by comparing six groups of PLLA films with different treatment conditions, the device made on film stretched four times and annealed for 8 h has the best performance. This sensor has good response ability to impact, vibration, and bending strain, and can be applied to human behavior recognition, such as touch, wrist bending, and swallowing.

ATR-FTIR behavior recognition PLLA sensors Raman UV curable films

SCI

English

Corresponding

Key-Area Research and Development Program of Guangdong Province[2020B0101030002] ; Wuyi University - Hong Kong - Macao Joint Research Funds[2019WGALH19] ; National Natural Science Foundation of China[62101475] ; Research Grant Council of Hong Kong["24201020","14207421"]

Materials Science

Materials Science, Multidisciplinary

WOS:000962855800001

WILEY

2-s2.0-85152081561

Scopus

1.Faculty of Intelligent Manufacturing,Wuyi University,Jiangmen,529020,China
2.V. Lashkaryov Institute of Semiconductor Physics,NAS of Ukraine,Kyiv,03680,Ukraine
3.Department of Electrical and Electronic Engineering and University Key Laboratory of Advanced Wireless Communications of Guangdong Province,Southern University of Science and Technology,Shenzhen,518055,China
4.Biomedical Engineering Department,The Chinese University of Hong Kong,Shatin, New Territories,999077,Hong Kong
5.CUHK Shenzhen Research Institute,Shenzhen,Nanshan,518060,China

Lin，Chubin,Wu，Wenjin,Zhu，Huiyu,et al. Skin-Adhesive Flexible Force Sensors Based on Piezoelectric Poly(l-lactic acid) for Human Behavior Recognition[J]. Advanced Materials Technologies,2023.

Lin，Chubin.,Wu，Wenjin.,Zhu，Huiyu.,Qiu，Yuhui.,Cui，Shaolong.,...&Yang，Jian.(2023).Skin-Adhesive Flexible Force Sensors Based on Piezoelectric Poly(l-lactic acid) for Human Behavior Recognition.Advanced Materials Technologies.

Lin，Chubin,et al."Skin-Adhesive Flexible Force Sensors Based on Piezoelectric Poly(l-lactic acid) for Human Behavior Recognition".Advanced Materials Technologies (2023).