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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Tactile-direction-sensitive and stretchable electronic skins based on human-skin-inspired interlocked microstructures

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Title
Tactile-direction-sensitive and stretchable electronic skins based on human-skin-inspired interlocked microstructures
Author
Park, JonghwaLee, YoungohHong, JaehyungLee, YoungsuHa, MinjeongJung, YoungdoLim, HyuneuiKim, Sung YoubKo, Hyunhyub
Issue Date
2014-12
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.8, no.12, pp.12020 - 12029
Abstract
Stretchable electronic skins with multidirectional force-sensing capabilities are of great importance in robotics, prosthetics, and rehabilitation devices. Inspired by the interlocked microstructures found in epidermal-dermal ridges in human skin, piezoresistive interlocked microdome arrays are employed for stress-direction-sensitive, stretchable electronic skins. Here we show that these arrays possess highly sensitive detection capability of various mechanical stimuli including normal, shear, stretching, bending, and twisting forces. Furthermore, the unique geometry of interlocked microdome arrays enables the differentiation of various mechanical stimuli because the arrays exhibit different levels of deformation depending on the direction of applied forces, thus providing different sensory output patterns. In addition, we show that the electronic skins attached on human skin in the arm and wrist areas are able to distinguish various mechanical stimuli applied in different directions and can selectively monitor different intensities and directions of air flows and vibrations.
URI
https://scholarworks.unist.ac.kr/handle/201301/9949
URL
https://pubs.acs.org/doi/10.1021/nn505953t
DOI
10.1021/nn505953t
ISSN
1936-0851
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