Počet záznamů: 1

Electromechanical sensors based on carbon nanotube networks

  1. 1.
    0348148 - UH-J 2011 RIV NZ eng C - Konferenční příspěvek (zahraniční konf.)
    Slobodian, P. - Říha, Pavel - Olejník, R. - Petráš, D. - Machovský, M. - Sáha, P.
    Electromechanical sensors based on carbon nanotube networks.
    Proceedings of the Fourth International Conference on Sensing Technology. Palmerston North: Massey University, 2010 - (Mukhopadhyay, S.; Fuchs, A.; Sen Gupta, G.; Lay-Ekuakille, A.), s. 542-547. ISBN 978-0-473-16942-8.
    [International Conference on Sensing Technology /4./. Lecce (IT), 03.06.2010-05.06.2010]
    Grant CEP: GA AV ČR IAA200600803
    Výzkumný záměr: CEZ:AV0Z20600510
    Klíčová slova: carbon nanotube network * compression * electrical conductivity * stress sensor
    Kód oboru RIV: BK - Mechanika tekutin

    The network of entangled multiwall carbon nanotubes and composite consisting of PS filter-supported nanotube network are introduced as conductors 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 network for its use as a stress-electric signal transducer. 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 is circumvented with a statistical approach. In this respect, good data representation is reached using Weibull distribution for the description of nanotube contact resistance distribution.
    Trvalý link: http://hdl.handle.net/11104/0188753
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