3 years ago

Inflammation-free, gas-permeable, lightweight, stretchable on-skin electronics with nanomeshes

Inflammation-free, gas-permeable, lightweight, stretchable on-skin electronics with nanomeshes
Hanbit Jin, Nawalage Florence Cooray, Masaki Sekino, Hiroshi Kawasaki, Mami Mori, Masayuki Amagai, Akira Itoh, Naoji Matsuhisa, Akihito Miyamoto, Sungwon Lee, Sunghoon Lee, Tamotsu Ebihara, Leona Yoda, Takao Someya, Tomoyuki Yokota
Thin-film electronic devices can be integrated with skin for health monitoring and/or for interfacing with machines. Minimal invasiveness is highly desirable when applying wearable electronics directly onto human skin. However, manufacturing such on-skin electronics on planar substrates results in limited gas permeability. Therefore, it is necessary to systematically investigate their long-term physiological and psychological effects. As a demonstration of substrate-free electronics, here we show the successful fabrication of inflammation-free, highly gas-permeable, ultrathin, lightweight and stretchable sensors that can be directly laminated onto human skin for long periods of time, realized with a conductive nanomesh structure. A one-week skin patch test revealed that the risk of inflammation caused by on-skin sensors can be significantly suppressed by using the nanomesh sensors. Furthermore, a wireless system that can detect touch, temperature and pressure is successfully demonstrated using a nanomesh with excellent mechanical durability. In addition, electromyogram recordings were successfully taken with minimal discomfort to the user.

Publisher URL: http://dx.doi.org/10.1038/nnano.2017.125

DOI: 10.1038/nnano.2017.125

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