A skin-integrated transparent and stretchable strain sensor with interactive color-changing electrochromic displays

Heun Park, Dong Sik Kim, Soo Yeong Hong, Chulmin Kim, Jun Yeong Yun, Seung Yun Oh, Sang Woo Jin, Yu Ra Jeong, Gyu-Tae Kim, Jeong Sook Ha

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

In this study, we report on the development of a stretchable, transparent, and skin-attachable strain sensor integrated with a flexible electrochromic device as a human skin-inspired interactive color-changing system. The strain sensor consists of a spin-coated conductive nanocomposite film of poly(vinyl alcohol)/multi-walled carbon nanotube/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) on a polydimethylsiloxane substrate. The sensor exhibits excellent performance of high sensitivity, high durability, fast response, and high transparency. An electrochromic device (ECD) made of electrochemically synthesized polyaniline nanofibers and V2O5 on an indium-tin-oxide-coated polyethylene terephthalate film experiences a change in color from yellow to dark blue on application of voltage. The strain sensor and ECD are integrated on skin via an Arduino circuit for an interactive color change with the variation of the applied strain, which enables a real-time visual display of body motion. This integrated system demonstrates high potential for use in interactive wearable devices, military applications, and smart robots.

Original languageEnglish
Pages (from-to)7631-7640
Number of pages10
JournalNanoscale
Volume9
Issue number22
DOIs
Publication statusPublished - 2017 Jun 14

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Electrochromic devices
Skin
Display devices
Color
Sensors
Carbon Nanotubes
Conductive films
Polyethylene Terephthalates
Nanocomposite films
Military applications
Polydimethylsiloxane
Polyaniline
Nanofibers
Tin oxides
Polyethylene terephthalates
Transparency
Indium
Carbon nanotubes
Durability
Alcohols

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A skin-integrated transparent and stretchable strain sensor with interactive color-changing electrochromic displays. / Park, Heun; Kim, Dong Sik; Hong, Soo Yeong; Kim, Chulmin; Yun, Jun Yeong; Oh, Seung Yun; Jin, Sang Woo; Jeong, Yu Ra; Kim, Gyu-Tae; Ha, Jeong Sook.

In: Nanoscale, Vol. 9, No. 22, 14.06.2017, p. 7631-7640.

Research output: Contribution to journalArticle

Park, Heun ; Kim, Dong Sik ; Hong, Soo Yeong ; Kim, Chulmin ; Yun, Jun Yeong ; Oh, Seung Yun ; Jin, Sang Woo ; Jeong, Yu Ra ; Kim, Gyu-Tae ; Ha, Jeong Sook. / A skin-integrated transparent and stretchable strain sensor with interactive color-changing electrochromic displays. In: Nanoscale. 2017 ; Vol. 9, No. 22. pp. 7631-7640.
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