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Buckled carbon nanotube network thin-film fabricated using chemically swelled elastomer substrates

Title
Buckled carbon nanotube network thin-film fabricated using chemically swelled elastomer substrates
Author
이승백
Keywords
buckling; buckled film; chemical swelling effect; carbon nanotube thin-film network; pressure sensor
Issue Date
2019-07
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v. 30, NO 28, no. 285501
Abstract
We report on the fabrication of buckled carbon nanotube thin-film networks (CNTN) that increases in conductivity with applied tactile pressure. When tactile pressure was applied, the buckled nanotubes collapsed and increased in interconnected density and as a result increased the thin-film conductivity. Unlike conventional methods using mechanically expanded elastomers, we utilize chemically swollen elastomers as the expanded substrate to transfer the CNTN. As the chemical evaporates, it compresses the CNTN causing the thin-film to buckle. The CNTN compression can be controlled by using organic solvents with differing elastomer absorption rates. Our method requires no mechanical instruments and shows in-plane multi-axial uniform strain for the entire substrate surface. Since the buckling was controlled chemically, the buckled CNTN can be produced reliably, furthering the possibility of its application as the active sensing material for highly sensitive tactile pressure sensors.
URI
https://iopscience.iop.org/article/10.1088/1361-6528/ab1363http://repository.hanyang.ac.kr/handle/20.500.11754/110720
ISSN
0957-4484; 1361-6528
DOI
10.1088/1361-6528/ab1363
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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