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Title:Liquid crystal-carbon nanotubes mixtures
Authors:ID Popa-Nita, Vlad (Author)
ID Kralj, Samo (Author)
Files:URL http://dx.doi.org/10.1063/1.3291078
 
Language:English
Work type:Unknown
Typology:1.01 - Original Scientific Article
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract: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.
Year of publishing:2010
PID:20.500.12556/DKUM-35445 New window
UDC:532.783:544.25
ISSN on article:0021-9606
COBISS.SI-ID:17371656 New window
NUK URN:URN:SI:UM:DK:1XTZMUZV
Publication date in DKUM:07.06.2012
Views:3284
Downloads:94
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
POPA-NITA, Vlad and KRALJ, Samo, 2010, Liquid crystal-carbon nanotubes mixtures. The Journal of chemical physics [online]. 2010. [Accessed 14 April 2025]. Retrieved from: http://dx.doi.org/10.1063/1.3291078
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Record is a part of a journal

Title:The Journal of chemical physics
Shortened title:J. chem. phys.
Publisher:American Institute of physics
ISSN:0021-9606
COBISS.SI-ID:5253893 New window

Secondary language

Language:English
Keywords:tekoči kristali, ogljikovi nano delci, zmesi, liquid crystals, carbon nanotubes, mixtures


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