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*

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A hierarchically arrayed octopus-inspired pattern (h-OP) formed on piezoelectric composite patch devices is developed. The h-OP enables robust wet adhesion to skin because its dome-like architecture achieves interfacial adhesion by generating capillarity-assisted suction stress. The h-OP devices demonstrated stable adhesion and high energy generation efficiency, even on the wet skin.

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