Unidirectional, highly linear strain sensors with thickness-engineered conductive films for precision control of soft machines

Saeb Mousavi, Mai Thanh Thai, Morteza Amjadi, David Howard, Shuhua Peng, Thanh Nho Do, Chun H. Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Current stretchable strain sensors possess limited linear working ranges and it is still a formidable challenge to develop sensors that concurrently possess high gauge factors and high stretchability (ϵ ∼100%). Herein, we report a facile method for creating unidirectional strain sensors to address the above issues. Using the 3D printing technique, we introduced thickness variations to control microcracking patterns in a carbon nanofibers-containing PEDOT:PSS thin-film sensor. As a result, the sensor is capable of exceptionally linear response for up to 97% tensile strain while maintaining a high gauge factor of 151.

Original languageEnglish
Pages (from-to)13673-13684
Number of pages12
JournalJournal of Materials Chemistry A
Volume10
Issue number26
Early online date24 May 2022
DOIs
Publication statusPublished - 14 Jul 2022

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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