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Compressive stress-electrical conductivity characteristics of multiwall carbon nanotube networks
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SYSNO ASEP 0356766 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Compressive stress-electrical conductivity characteristics of multiwall carbon nanotube networks Tvůrce(i) Slobodian, P. (CZ)
Říha, Pavel (UH-J) SAI, ORCID, RID
Lengálová, A. (CZ)
Sáha, P. (CZ)Celkový počet autorů 4 Zdroj.dok. Journal of Materials Science. - : Springer - ISSN 0022-2461
Roč. 46, č. 9 (2011), s. 3186-3190Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova carbon nanotube network ; compression ; electrical conductivity ; stress sensor Vědní obor RIV BK - Mechanika tekutin CEP IAA200600803 GA AV ČR - Akademie věd CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000287527600045 DOI 10.1007/s10853-010-5202-0 Anotace A network of entangled multiwall carbon nanotubes is presented as a conductor whose conductivity is sensitive to compressive stress both in the course of monotonic stress growth and when loading/unloading cycles are imposed. The testing has shown as much as 100% network conductivity increase at the maximum applied stress. It indicates favorable properties of multiwall carbon nanotube networks for their use as stress-electric signal transducers. To model the conductivity-stress dependence, it is hypothesized that compression increases local contact forces between nanotubes, which results in more conductive contacts. The lack of detailed knowledge of the mechanism as well as an unclear shift from individual contacts to the whole network conductance behavior is circumvented with a statistical approach. In this respect, good data representation is reached using Weibull distribution for the description of distribution of nanotube contact resistance. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2011
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