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 journalArticlepeer-review

63 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. © 2012 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)7858-7866
Number of pages9
JournalACS Nano
Volume6
Issue number9
DOIs
StatePublished - Aug 21 2012
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the SINAM NSF NSEC. The authors also thank the King Abdullah University of Science and Technology (KAUST) for the support through a grant to the ME Dept. of UC Berkeley. J.I. thanks Dr. Hojeong Jeon for assistance with microscope imaging.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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