Skin-Inspired Hair–Epidermis–Dermis Hierarchical Structures for Electronic Skin Sensors with High Sensitivity over a Wide Linear Range

• DOI: 10.1021/acsnano.1c05199
• Publication Date: 2021-10-04T20:17:11Z
• Authors: Huijun Kong; Zhongqian Song; Weiyan Li; Yu Bao; Dongyang Qu; Yingming Ma; Zhenbang Liu; Wei Wang; Zhenxin Wang; Dongxue Han; Li Niu
• Keywords: Epidermis (zoology)

The quest for both high sensitivity and a wide linear range in electronic skin design is perpetual; unfortunately, these two key parameters are generally mutually exclusive. Although limited success attaining has been achieved via material-specific or complicated structure design, addressing the conflict between remains critical challenge. Here, inspired by human somatosensory system, we propose hair-epidermis-dermis hierarchical structures based on reduced graphene oxide/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) aerogel to reconcile this contradiction range. This enables an (e-skin) sensor sensing up 30 kPa without sacrificing (137.7 kPa–1), revealing effective strategy overcome above-mentioned conflict. In addition, e-skin also exhibits low detection limit (1.1 Pa), fast responsiveness (∼80 ms), excellent stability reproducibility (over 10 000 cycles); as result, platform capable of detecting small air flow monitoring pulse even sound-induced vibrations. may boost ongoing research structural performance regulation emerging flexible electronics.