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Anomalous decrease of the specific heat capacity at the electrical and thermal conductivity percolation threshold in nanocomposites

Authors
Kim, B. -W.Park, S. -H.Bandaru, P. R.
Issue Date
Dec-2014
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.105, no.25
Journal Title
APPLIED PHYSICS LETTERS
Volume
105
Number
25
URI
http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/10190
DOI
10.1063/1.4905133
ISSN
0003-6951
Abstract
We report an unusual specific heat variation in nanotube/polymer composites, related to a reduction in its value at the electrical and the thermal conductivity percolation threshold, with a concomitant increase in the crystallinity. The reduction has been interpreted in terms of the partition of the total number of nanostructures into isolated or clustered/connected entities, the numbers of which vary as a function of the nanotube filler fraction, and the consequent modulation of the entropic characteristics as well as the conductivity. (C) 2014 AIP Publishing LLC.
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College of Engineering (School of Mechanical Engineering)
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