Electrical Transport in Onion-Like Carbon—PMMA Nanocomposites | Sciact - CRIS-system of Boreskov Institute of Catalysis

Electrical Transport in Onion-Like Carbon—PMMA Nanocomposites Full article

Journal

Applied Physics Letters
ISSN: 0003-6951 , E-ISSN: 1077-3118

Output data

Year: 2019, Volume: 114, Number: 10, Article number : 103102, Pages count : 4 DOI: 10.1063/1.5085936

Tags

Nanoparticles; Graphene; Electrical conductivity; Hydrostatics; Polymers; Nanocomposites; Diamond

Authors

Grimaldi Claudio ¹ , Kecsenovity Egon ² , Majidian Maryam ¹ , Kuznetsov Vladimir L. ³ , Magrez Arnaud ^1,4 , Forró László ¹

Affiliations

1	Laboratory of Physics of Complex Matter, Ecole Polytechnique Fédérale de Lausanne, Station 3, CH-1015 Lausanne, Switzerland
2	Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Square 1, Szeged H-6720, Hungary
3	Boreskov Institute of Catalysis, SB RAS, Lavrentieva 5, Novosibirsk 630090, Russia
4	Crystal Growth Facility, Ecole Polytechnique Fédérale de Lausanne, Station 3, CH-1015 Lausanne, Switzerland

Funding (2)

1	Swiss National Science Foundation	200020-163441
2	Swiss National Science Foundation	200021-140557

We report electrical conductivity measurements of polymethyl-methacrylate filled by onion-like carbon particles with a primary particle size of ≈5 nm. We show that the conductivity σ is exceptionally high even at very low loadings and that its low-temperature dependence follows a Coulomb gap regime at atmospheric pressure and an activated behavior at a pressure of 2 GPa. We interpret this finding in terms of the enhancement under the applied pressure of the effective dielectric permittivity within the aggregates of onion-like carbons, which improves the screening of the Coulomb interaction and reduces the optimal hopping distance of the electrons.

Grimaldi C. , Kecsenovity E. , Majidian M. , Kuznetsov V.L. , Magrez A. , Forró L.
Electrical Transport in Onion-Like Carbon—PMMA Nanocomposites

Applied Physics Letters. 2019. V.114. N10. 103102 :1-4. DOI: 10.1063/1.5085936 WOS Scopus РИНЦ AN OpenAlex

Full text from publisher

Submitted:	Dec 17, 2018
Accepted:	Feb 26, 2019
Published print:	Mar 11, 2019
Published online:	Mar 12, 2019

Web of science:	WOS:000461512000036
Scopus:	2-s2.0-85062821170
Elibrary:	38692368
Chemical Abstracts:	2019:489097
OpenAlex:	W3098963085

DB	Citing
Scopus	4
Web of science	5
Elibrary	4
OpenAlex	5