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Naslov:Alignment of carbon nanotubes in nematic liquid crystals
Avtorji:ID Schoot, Paul van der (Avtor)
ID Popa-Nita, Vlad (Avtor)
ID Kralj, Samo (Avtor)
Datoteke:URL http://dx.doi.org/10.1021/jp712173n
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FNM - Fakulteta za naravoslovje in matematiko
Opis:The self-organizing properties of nematic liquid crystals can be used to aligncarbon nanotubes dispersed in them. Because the nanotubes are so much thinner than the elastic penetration length, the alignment is caused by the coupling of the unperturbed director field to the anisotropic interfacial tension of the nanotubes in the nematic host fluid. In order to relate the degree of alignment of the nanotubes to the properties of the nematic liquid crystal, we treat the two components on the same footing and combine Landau-deGennes free energies for the thermotropic ordering of the liquid crystal and for the lyotropic nematic ordering of carbon nanotubes caused by their mutually excluded volumes. The phase ordering of the binary mixture is analyzed as a function of the volume fraction of the carbon nanotubes, the strength of the coupling and the temperature. We find that the degree of ordering of the nanorods is enslaved by the properties of the host liquid and that it can be tuned by raising or lowering the temperature or by increasing or decreasing their concentration. By comparing the theory to recent experiments, we find the anchoring energy of multiwalled carbon nanotubes to be in the range from 10-10 to 10-7 N m-1.
Ključne besede:liquid crystals, nematic crystals, molecular dynamics, stability, elasticity, carbon nanotubes
Leto izida:2008
PID:20.500.12556/DKUM-35715 Novo okno
UDK:538.9
COBISS.SI-ID:15940616 Novo okno
ISSN pri članku:1520-6106
NUK URN:URN:SI:UM:DK:RD1DDTMA
Datum objave v DKUM:07.06.2012
Število ogledov:1899
Število prenosov:85
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Gradivo je del revije

Naslov:The journal of physical chemistry
Skrajšan naslov:J. phys. chem., B Condens. mater. surf. interfaces biophys.
Založnik:American Chemical Society
ISSN:1520-6106
COBISS.SI-ID:14241063 Novo okno

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:tekoči kristali, nematični kristali, molekularna dinamika, stabilnost, elastičnost


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