DataVXACS Energy LettersPaper
journal article·2022-05-13

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

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

ACS Energy Letters· Volume 7· Issue 5
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Source abstract

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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Research context

Composites

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Adhesion, Friction, and Surface Interactions · Tactile and Sensory Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea

Division of Advanced Materials Engineering, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea

Department of Energy Storage/Conversion Engineering of Graduate School and Hydrogen and Fuel Cell Research Center, Jeonbuk National University, Jeonju, Jeonbuk 54896, Republic of Korea

Department of Materials Science and Engineering, Pukyong National University, Busan 48513, Republic of Korea

Korea Institute of Ceramic Engineering and Technology (KICET), Jinju-si, Gyeonsangnam-do 52851, Republic of Korea

Department of Virtual Engineering Center, Korea Institute of Ceramic Engineering and Technology (KICET), Jinju-si, Gyeonsangnam-do 52851, Republic of Korea

Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea

Department of Electronics and Information Engineering, Korea University, Sejong 30019, Republic of Korea

Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea

Funding

National Research Foundation of Korea · Korea University

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