Liquid crystal-carbon nanotubes mixtures

Popa-Nita, Vlad; Kralj, Samo

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Naslov:	Liquid crystal-carbon nanotubes mixtures
Avtorji:	ID Popa-Nita, Vlad (Avtor) ID Kralj, Samo (Avtor)
Datoteke:	http://dx.doi.org/10.1063/1.3291078
Jezik:	Angleški jezik
Vrsta gradiva:	Neznano
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	FNM - Fakulteta za naravoslovje in matematiko
Opis:	The self-organizing properties of nematic liquid crystals (LCs) can be used to align carbon nanotubes (CNTs) dispersed in them. In the previous paper [P. van der Schoot, V. Popa-Nita, and S. Kralj, J. Phys. Chem. B 112, 4512 (2008)], we have considered the weak anchoring limit of the nematic LC molecules at the nanotube's surface, where the CNT alignment is caused by the anisotropic interfacial tension of the nanotubes in the nematic host fluid. In this paper, we present the theoretical results obtained for strong enough anchoring at the CNT-LC interface for which the nematic ordering around nanotube is apparently distorted. Consequently, relatively strong long-range and anisotropic interactions can emerge within the system. In order to get insight into the impact of LC ordering on the alignment of nanotubes we treat the two mixture components on the same footing and combine Landau-de Gennes free energy for the thermotropic ordering of the liquid crystal and Doi free energy for lyotropic nematic ordering of carbon nanotubes caused by their mutually excluded volume. The phase ordering of the binary mixture is analyzedas a function of the volume fraction of the carbon nanotubes, the strength of coupling, and the temperature. We find that the degree of ordering of the nanorods can be tuned by raising or lowering the temperature orby increasing or decreasing their concentration.
Leto izida:	2010
PID:	20.500.12556/DKUM-35445
UDK:	532.783:544.25
COBISS.SI-ID:	17371656
ISSN pri članku:	0021-9606
NUK URN:	URN:SI:UM:DK:1XTZMUZV
Datum objave v DKUM:	07.06.2012
Število ogledov:	3284
Število prenosov:	94
Metapodatki:
Področja:	Ostalo
:	POPA-NITA, Vlad in KRALJ, Samo, 2010, Liquid crystal-carbon nanotubes mixtures. The Journal of chemical physics [na spletu]. 2010. [Dostopano 14 april 2025]. Pridobljeno s: http://dx.doi.org/10.1063/1.3291078 Kopiraj citat

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Gradivo je del revije

Naslov:	The Journal of chemical physics
Skrajšan naslov:	J. chem. phys.
Založnik:	American Institute of physics
ISSN:	0021-9606
COBISS.SI-ID:	5253893

Sekundarni jezik

Jezik:	Angleški jezik
Ključne besede:	tekoči kristali, ogljikovi nano delci, zmesi, liquid crystals, carbon nanotubes, mixtures

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