1. Bioinspired Interlocked and Hierarchical Design of ZnO Nanowire Arrays for Static and Dynamic Pressure-Sensitive Electronic Skins
- Author
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Youngoh Lee, Hyunhyub Ko, Seongdong Lim, Minjeong Ha, Doo-Seung Um, and Jonghwa Park
- Subjects
Materials science ,business.industry ,Nanowire ,Electronic skin ,Response time ,Nanotechnology ,Static pressure ,Condensed Matter Physics ,Piezoelectricity ,Piezoresistive effect ,Electronic, Optical and Magnetic Materials ,Biomaterials ,Electrochemistry ,Optoelectronics ,Dynamic pressure ,business ,Sound pressure - Abstract
The development of electronic skin (e-skin) is of great importance in human-like robotics, healthcare, wearable electronics, and medical applications. In this paper, a bioinspired e-skin design of hierarchical micro- and nano-structured ZnO nanowire (NW) arrays in an interlocked geometry is suggested for the sensitive detection of both static and dynamic tactile stimuli through piezoresistive and piezoelectric transduction modes, respectively. The interlocked hierarchical structures enable a stress-sensitive variation in the contact area between the interlocked ZnO NWs and also the efficient bending of ZnO NWs, which allow the sensitive detection of both static and dynamic tactile stimuli. The flexible e-skin in a piezoresistive mode shows a high pressure sensitivity (−6.8 kPa−1) and an ultrafast response time (
- Published
- 2015