Femtosecond-laser-based fabrication of metal/PDMS composite microstructures for mechanical force sensing

Yasutaka Nakajima, Kotaro Obata, Manan Machida, Arndt Hohnholz, Jürgen Koch, Oliver Suttmann, Mitsuhiro Terakawa

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5 Citations (Scopus)

Abstract

We experimentally demonstrate the fabrication of silver/polydimethylsiloxane (PDMS) composite microline structures based on the simultaneous induction of the photoreduction of silver ions and the photopolymerization of PDMS using a femtosecond laser. We show that the fabricated line structures exhibit electrical conductivity and that the resistance of the structures increases when they are subjected to mechanical force. Demonstration of sensitivity to an external mechanical force obtained by exploiting flexible composite structures fabricated by a femtosecond laser is reported for the first time. The present technique using a femtosecond laser is promising for the fabrication of flexible optical/electrical devices.

Original languageEnglish
Pages (from-to)4203-4213
Number of pages11
JournalOptical Materials Express
Volume7
Issue number11
DOIs
Publication statusPublished - 2017 Jan 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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