Press Releases | June 2, 2020

For the application of electronic skin that displays images pasted on the skin

A joint research team of Hayato Kumagai in the latter half of the doctoral course and Kazuhiro Takahashi, Associate Professor in the Department of Electrical and Electronic Information Engineering of Toyohashi University of Technology, and Toshinori Fujie, Associate Professor (Lecturer) of the School of Life Science and Technology at the Tokyo Institute of Technology, have succeeded in developing a variable color sheet with a film thickness of 400 nanometers (less than one-hundredth of the thickness of a human hair) that changes color when stretched and shrunk. This variable color sheet utilizes the color generation by metal nanostructures formed in the elastomer sheet to achieve reversible wavelength control of transmitted light over a wavelength range of 495 to 660 nanometers through expansion and contraction. The developed stretchable color sheets are expected to be applied to adhesive-type display elements, as they can adhere to skin or be transferred to various electronic devices at room temperature utilizing the high adhesiveness of elastomers.

Full text: Stretchable Variable Color Sheet that Changes Color with Expansion and Contraction
TUT website: Press release