Scalable Microaccordion Mesh for Deformable and Stretchable Metallic Films

Jan Mertens, Richard W. Bowman, Julian C. W. Willis, Adam Robinson, Darryl Cotton, Richard White, Keith A. Seffen, and Jeremy J. Baumberg
Phys. Rev. Applied 4, 044006 – Published 13 October 2015
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Abstract

Elastically deformable materials can be created from rigid sheets through patterning appropriate meshes which can locally bend and flex. We demonstrate how microaccordion patterns can be fabricated across large areas using three-beam interference lithography. Our resulting mesh induces a large and robust elasticity within any rigid material film. Gold coating the microaccordion produces stretchable conducting films. Conductivity changes are negligible when the sample is stretched reversibly up to 30% and no major defects are introduced, in comparison to continuous sheets which quickly tear. Scaling analysis shows that our method is suited to further miniaturization and large-scale fabrication of stretchable functional films. It thus opens routes to stretchable interconnects in electronic, photonic, and sensing applications, as well as a wide variety of other deformable structures.

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  • Received 23 May 2015

DOI:https://doi.org/10.1103/PhysRevApplied.4.044006

© 2015 American Physical Society

Authors & Affiliations

Jan Mertens1, Richard W. Bowman1, Julian C. W. Willis1, Adam Robinson2, Darryl Cotton2, Richard White2, Keith A. Seffen3, and Jeremy J. Baumberg1,*

  • 1NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom
  • 2Nokia Research Centre, Broers Building, 21 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
  • 3Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom

  • *jjb12@cam.ac.uk

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Vol. 4, Iss. 4 — October 2015

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