Picosecond UV laser induced scribing of polyethylene terephthalate (PET) films for the enhancement of their flexibility

Min Gi Kang, Changhwan Kim, Yong Joong Lee, Sung Yeol Kim, Ho Lee

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Flexible devices has received a great attention due to their high portability, lightness, and ease of shape reconfiguration. To achieve high flexibility, controlling the mechanical properties of the substrate materials is of importance. In this paper, we controlled the local flexibility of PET films via UV laser scribing. The bending test of the films revealed that their bending curvatures, the associated mechanical damages, and the required bending forces could be successfully tuned by controlling the number and the depth of the scribed lines. Our simple strategy of using laser scribing will find its usefulness in flexible device applications where high flexibility and mechanical stability are required.

Original languageEnglish
Pages (from-to)183-190
Number of pages8
JournalOptics and Laser Technology
Volume82
DOIs
StatePublished - 1 Aug 2016

Keywords

  • Bending property
  • Flexibility
  • Flexible electronics substrate
  • Laser scribing
  • PET film

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