ubc
Electromechanical Behavior of Chemically Reduced Graphene Oxide and Multi-walled Carbon Nanotube Hybrid Material
2016-05-14
[Electronic ed.]
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Universitätsbibliothek Chemnitz
Universitätsbibliothek Chemnitz, Chemnitz
Fakultät für Elektrotechnik und Informationstechnik
Professur Mess- und Sensortechnik
male
male
female
In this paper, we propose strain-sensitive thin films based on chemically reduced graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs) without adding any further surfactants. In spite of the insulating properties of the thin-film-based GO due to the presence functional groups such as hydroxyl, epoxy, and carbonyl groups in its atomic structure, a significant enhancement of the film conductivity was reached by chemical reduction with hydro-iodic acid. By optimizing the MWCNT content, a significant improvement of electrical and mechanical thin film sensitivity is realized. The optical properties and the morphology of the prepared thin films were studied using ultraviolet-visible spectroscopy (UV-Vis) and scanning electron microscope (SEM). The UV-Vis spectra showed the ability to tune the band gap of the GO by changing the MWCNT content, whereas the SEM indicated that the MWCNTs were well dissolved and coated by the GO. Investigations of the piezoresistive properties of the hybrid nanocomposite material under mechanical load show a linear trend between the electrical resistance and the applied strain. A relatively high gauge factor of 8.5 is reached compared to the commercial metallic strain gauges. The self-assembled hybrid films exhibit outstanding properties in electric conductivity, mechanical strength, and strain sensitivity, which provide a high potential for use in strain-sensing applications.
539
542
Kohlenstoff-Nanoröhre, Graphenoxid, Dehnungssensor
Kohlenstoff-Nanoröhre, Graphenoxid, Dehnungssensor, Technische Universität Chemnitz, Publikationsfonds
Multi-walled carbon nanotubes, Graphene oxide, Chemical reduction, Piezoresistivity, Strain sensor, Technische Universität Chemnitz, Publication funds
urn:nbn:de:bsz:ch1-qucosa-203092
10.1186/s11671-015-1216-5
Technische Universität Chemnitz
edt
Technische Universität Chemnitz, Chemnitz
SpringerOpen
pbl
SpringerOpen, New York, NY [u.a.]
Abderrahmane
Benchirouf
aut
Christian
Müller
aut
Olfa
Kanoun
aut
eng
http://dx.doi.org/10.1186/s11671-015-1216-5
Link zur Originalpublikation in der Zeitschrift "Nanoscale Research Letters"
Nanoscale Research Letters. - 2016,11:4 DOI: 10.1186/s11671-015-1216-5
1556-276X
born digital
blum
Ute.Blumtritt@Bibliothek.TU-Chemnitz.DE
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