Laser-assisted simultaneous transfer and patterning of vertically aligned carbon nanotube arrays on polymer substrates for flexible devices

Jung Bin In, Daeho Lee, Francesco Fornasiero, Aleksandr Noy, Costas P. Grigoropoulos

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

We demonstrate a laser-assisted dry transfer technique for assembling patterns of vertically aligned carbon nanotube arrays on a flexible polymeric substrate. A laser beam is applied to the interface of a nanotube array and a polycarbonate sheet in contact with one another. The absorbed laser heat promotes nanotube adhesion to the polymer in the irradiated regions and enables selective pattern transfer. A combination of the thermal transfer mechanism with rapid direct writing capability of focused laser beam irradiation allows us to achieve simultaneous material transfer and direct micropatterning in a single processing step. Furthermore, we demonstrate that malleability of the nanotube arrays transferred onto a flexible substrate enables post-transfer tailoring of electric conductance by collapsing the aligned nanotubes in different directions. This work suggests that the laser-assisted transfer technique provides an efficient route to using vertically aligned nanotubes as conductive elements in flexible device applications.

Original languageEnglish (US)
Pages (from-to)7858-7866
Number of pages9
JournalACS Nano
Volume6
Issue number9
DOIs
StatePublished - Sep 25 2012
Externally publishedYes

Keywords

  • carbon nanotube
  • flexible electronics
  • laser patterning
  • nanotube transfer
  • polymer substrate

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

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