Ultrathin epidermal strain sensor based on an elastomer nanosheet with an inkjet-printed conductive polymer

作者：Tetsu Yuma; Yamagishi Kento; Kato Akira; Matsumoto Yuya; Tsukune Mariko; Kobayashi Yo; Fujie Masakatsu G; Takeoka Shinji; Fujie Toshinori

来源：Applied Physics Express, 2017, 10(8): 087201.

DOI：10.7567/APEX.10.087201

To minimize the interference that skin-contact strain sensors cause natural skin deformation, physical conformability to the epidermal structure is critical. Here, we developed an ultrathin strain sensor made from poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) inkjet-printed on a polystyrene-polybutadiene-polystyrene (SBS) nanosheet. The sensor, whose total thickness and gauge factor were similar to 1 mu m and 0.73 +/- 0.10, respectively, deeply conformed to the epidermal structure and successfully detected the small skin strain (similar to 2%) while interfering minimally with the natural deformation of the skin. Such an epidermal strain sensor will open a new avenue for precisely detecting the motion of human skin and artificial soft-robotic skin.

• 出版日期2017-8