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

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
16 Mar 2022
Accepted
24 May 2022
First published
24 May 2022

J. Mater. Chem. A, 2022, Advance Article

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

S. Mousavi, M. T. Thai, M. Amjadi, D. Howard, S. Peng, T. N. Do and C. H. Wang, J. Mater. Chem. A, 2022, Advance Article , DOI: 10.1039/D2TA02064E

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