BROWSE

Related Researcher

Author

Park, Young-Bin
Functional Intelligent Materials Lab (FIMLab)
Research Interests
  • Composites

ITEM VIEW & DOWNLOAD

Piezoresistive behavior and multi-directional strain sensing ability of carbon nanotube-graphene nanoplatelet hybrid sheets

Cited 7 times inthomson ciCited 7 times inthomson ci
Title
Piezoresistive behavior and multi-directional strain sensing ability of carbon nanotube-graphene nanoplatelet hybrid sheets
Author
Hwang, Sang-HaPark, Hyung WookPark, Young-Bin
Keywords
Applied strain; Bucky paper; Control materials; Critical factors; Electrical resistances; Exfoliated graphite; Lateral dimension; Material combination; Multi-directional; Multiple electrodes; Nanomaterial; Nanoparticle interaction; Nanoplatelet; Piezo-resistive behavior; Resistance change; Simultaneous measurement; Strain sensing
Issue Date
201301
Publisher
IOP PUBLISHING LTD
Citation
SMART MATERIALS AND STRUCTURES, v.22, no.1, pp.1 - 9
Abstract
Free-standing carbon nanomaterial hybrid sheets, consisting of multi-walled carbon nanotubes (MWCNTs), exfoliated graphite nanoplatelets (xGnPs) and nanographene platelets (NGPs) of different lengths and lateral dimensions, have been prepared using various material combinations and compositions. When subjected to tensile strains, the carbon nanomaterial sheets showed piezoresistive behavior, characterized by a change in electrical resistance with applied strain. Simultaneous measurement of resistance changes among multiple electrodes placed on the periphery of the hybrid sheets showed the dependence of resistance changes on strain direction, which potentially allows multi-directional strain sensing. Various combinations of MWCNT length, xGnP size and MWCNT-to-xGnP/NGP ratio result in different specific surface areas and nanoparticle interactions, which serve as critical factors for controlling the sensitivity of hybrid sheets. The smaller the nanoplatelet size and the higher the content as compared to MWCNT, the higher the sensitivity. Buckypapers, which are free-standing sheets composed of CNTs, are used as the control materials, and the unique characteristics of hybrid sheets are discussed.
URI
Go to Link
DOI
http://dx.doi.org/10.1088/0964-1726/22/1/015013
ISSN
0964-1726
Appears in Collections:
MNE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU