A transparent strain sensor based on PDMS-embedded conductive fabric for wearable sensing applications

Anindya Nag, Roy B. V. B. Simorangkir, Elizabeth Valentin, Toni Bjorninen, Leena Ukkonen, Raheel M. Hashmi, Subhas Chandra Mukhopadhyay

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

In this paper we present a new approach to realize flexible transparent strain sensors. It combines the use of transparent conductive fabric with polydimethylsiloxane (PDMS) through a simple and straightforward layer-by-layer assembly process. The conductive fabric is used to realize the transparent electrodes while the PDMS is utilized as both the substrate and encapsulation layers. As a concept demonstration, an interdigital capacitive sensor is designed and fabricated using the proposed approach. The fabricated sensor is then characterized in terms of its transparency and electro-mechanical nature. This is followed by the application of the sensor in several physiological sensing scenarios including the sensing of various body-part movements and tactile sensing. Apart from a high optical transparency (~70%), the sensor shows promising sensing results which validate the applicability of the proposed approach for realization of flexible and transparent strain sensors for wearable sensing applications.

Original languageEnglish
Pages (from-to)71020-71027
Number of pages8
JournalIEEE Access
Volume6
DOIs
Publication statusPublished - 2018

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