Tactile-Direction-Sensitive and Stretchable Electronic Skins Based on Human-Skin-Inspired Interlocked Microstructures
2014; American Chemical Society; Volume: 8; Issue: 12 Linguagem: Inglês
10.1021/nn505953t
ISSN1936-086X
AutoresJonghwa Park, Youngoh Lee, Jaehyung Hong, Youngsu Lee, Minjeong Ha, Young Do Jung, Hyuneui Lim, Sung Youb Kim, Hyunhyub Ko,
Tópico(s)Muscle activation and electromyography studies
ResumoStretchable 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.
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