한빛사논문
- 조회1,086
Narendar Gogurlaa,b, Biswajit Royc, Sunghwan Kima,b,c,*
aBasic Science Research Center, Ajou University, Suwon, 16499, Republic of Korea
bDepartment of Physics, Ajou University, Suwon, 16499, Republic of Korea
cDepartment of Energy Systems Research, Ajou University, Suwon, 16499, Republic of Korea
*Corresponding author
Abstract
Engineered silk protein hydrogel that resembles skin tissue is a promising material for artificial electronic skin; it can be interfaced with real biological tissues seamlessly and used as an artificial tissue in soft robotics. Herein, we report a soft, biocompatible, and skin-adhesive silk hydrogel incorporating ZnO nanorods (ZnONRs) for a tribo- and piezo-electric energy-generating skin (EG-skin) that can harvest biomechanical energy and sense biomechanical motions. Incorporation of ZnONRs mediates an eight-fold enhancement of piezoelectricity compared to pristine silk hydrogel. An additional two-fold increase in the electrical response is possible when it is encapsulated in silk protein layers because of the hybrid effect of tribo- and piezo-electricity. The high power generated (~1 mW/cm2) is sufficient to activate low-power electrical devices, such as LEDs, oximeters, and stopwatches. Additionally, the EG-skin can be used as a tactile identifier for finger movements with quantized real-time electrical signals. The softness and skin-adhesive properties provide conformal interfaces with human skin and biological tissues, and we can harvest energies of approximately 6.2 and 0.9 μW/cm2, respectively, from their mechanical stimulation. The silk-protein-based artificial EG-skin can be effectively utilized in human–machine interfaces, tactile sensors, soft robotics, and biomedical implants.
논문정보
- Research article
- 2020년 08월 (BRIC 등록일 2020-09-11)
- 국내 연구진
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