Publication detail

Sculpturing graphene wrinkle patterns into compliant substrates

SAMPATHKUMAR, K. ANDROULIDAKIS, CH. KOUKARAS, E. RAHOVA, J. DROGOWSKA, K. KALBÁČ, M. VETUSHKA, A. FEJFAR, A. GALIOTIS, C. FRANK, O.

Original Title

Sculpturing graphene wrinkle patterns into compliant substrates

Type

journal article in Web of Science

Language

English

Original Abstract

In this work we present a fabrication process for sculpturing wrinkled structures into soft polymers by thermal treatment of graphene flakes. This is accomplished by the imposition of a biaxial compressive stress field to the graphene flakes by controlled heating of graphene/polymer composites. The wrinkling patterns (amplitude, wavelength) are linearly related to the thickness of the graphene as in the case of a stiff film deposited on a compliant substrate. The orientation of the wrinkles is controlled by the geometry of the flakes, such as that long and narrow flakes exhibit perfectly parallel wrinkles perpendicular to the longer edge, while more equilateral specimens are wrinkled without any preferred orientation in the flake interior. Kelvin probe measurements showed that this type of wrinkling does not affect the surface potential of the graphene flakes. The universality of the technique is validated by sculpturing two different polymers, using mechanically exfoliated flakes as well as large graphene prepared by chemical vapor deposition. We thus demonstrate that the present approach is an excellent method for patterning the surface of soft matter in a number of applications with nanoscale features of lateral dimensions as low as ∼50 nm.

Keywords

graphene; patterning; exfoliation;

Authors

SAMPATHKUMAR, K.; ANDROULIDAKIS, CH.; KOUKARAS, E.; RAHOVA, J.; DROGOWSKA, K.; KALBÁČ, M.; VETUSHKA, A.; FEJFAR, A.; GALIOTIS, C.; FRANK, O.

Released

1. 5. 2019

Publisher

ELSEVIER SCIENCE LTD,

Location

Oxford, England

ISBN

0008-6223

Periodical

CARBON

Year of study

146

Number

NA

State

United States of America

Pages from

772

Pages to

778

Pages count

7

BibTex

@article{BUT155743,
  author="SAMPATHKUMAR, K. and ANDROULIDAKIS, CH. and KOUKARAS, E. and RAHOVA, J. and DROGOWSKA, K. and KALBÁČ, M. and VETUSHKA, A. and FEJFAR, A. and GALIOTIS, C. and FRANK, O.",
  title="Sculpturing graphene wrinkle patterns into compliant substrates",
  journal="CARBON",
  year="2019",
  volume="146",
  number="NA",
  pages="772--778",
  doi="10.1016/j.carbon.2019.02.041",
  issn="0008-6223"
}