Flexible coloring element by using bending deformation of electroactive hydrogel

Kodai Usuki*, Hiroaki Onoe, Eiji Iwase

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We demonstrated coloring elements with high ratio change of the coloring area by using bending deformation of electroactive hydrogel. By using the nondimensional deflection α of a gel, we showed that the response time for the color change and the thickness of the coloring element can be designed. We fabricated a 3 × 3 dot-matrix display with α of 0.56 and evaluated the performance of the coloring element. As a result, the coloring area ratios in blank state and colored state were 7.6±4.6% and 92.1±4.6%, respectively. The response times were 12 seconds from blank state to colored state, and 13 seconds from colored state to blank state.

Original languageEnglish
Pages (from-to)480-483
Number of pages4
Journalieej transactions on sensors and micromachines
Issue number12
Publication statusPublished - 2015 Dec 1


  • Bending deformation
  • Electroactive hydrogel
  • Flexible coloring element
  • PAMPS gel

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering


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