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우수성과SAIHST 구성원의 언론보도내용 및 수상내역, 각 연구분야의 우수 학술지에 게재된 논문 등 우수한 성과들을 소개합니다.

[방창현 교수/ 우수논문] ACS Energy letters, 28 Apr 2022
No 1
작성자 관리자
등록일 2022/10/18

 

 

 

방창현 교수

삼성융합의과학원

 

 IF: 23.991

 

 

ACS Energy letters.2022 April 28.DOI : 10.1021/acsenergylett.2c00259.

 

Conformably Skin-Adherent Piezoelectric Patch with Bioinspired Hierarchically Arrayed Microsuckers Enables Physical Energy Amplification.

 

Kim, Da Wan; Kim, Hyunseung; Hwang, Geon-Tae; Cho, Sung Beom; Jeon, Seung Hwan; Kim, Hyeon Woo; Jeong, Chang Kyu; Chun, Sungwoo; Pang, Changhyun

 

Abstract

An intimate contact interface between wearable energy harvesting devices and nonflat human surfaces is critical for harvesting energy from the body's movements. The device can only absorb the deformation strain under stable interfacial adhesion to biological surfaces. Past developments have mainly examined the active layer of such devices, but the device/body adhesive interface effects are rarely considered. Here, we introduce a hierarchically arrayed octopus-inspired pattern (h-OP) formed on piezoelectric composite patch devices. The h-OP enables robust wet adhesion to skin because its dome-like architecture achieves interfacial adhesion by generating cohesive forces among liquid molecules. We used finite element method simulation to investigate decohesion behaviors with bending-induced stress distribution. The enhanced adhesion provided efficient energy generation under strain according to body movements. With 90° wrist bending, the h-OP devices demonstrated approximately triple the energy generation of implementations with no pattern, exhibiting stable adhesion and high energy generation efficiency, even on the wet skin.

 

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