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Title:Vpliv nanodelcev na strukturo zvite dislokacije v smektični A fazi
Authors:ID Črešnar, Dejvid (Author)
ID KRALJ, SAMO (Mentor) More about this mentor... New window
Files:.pdf UNI_Cresnar_Dejvid_2013.pdf (1,67 MB)
MD5: 6204B07247302565E56247CC65FDCDB5
 
Language:Slovenian
Work type:Final seminar paper
Typology:2.11 - Undergraduate Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V seminarju obravnavamo vpliv nanodelcev na strukturo zvitih dislokacij v smektični A fazi tekočih kristalov. Za opis sistema uvedemo ureditveni parameter, ki ga uporabimo v Landau – de Gennesovem fenomenološkem modelu. Minimizacija proste energije vodi do Euler – Lagrangevih enačb, ki jo rešujemo numerično z Eulerjevo metodo. Z nanodelci induciramo različne robne pogoje znotraj jedra dislokacije. Preučili smo, kako različno površinsko obdelani nanodelci vplivajo na strukturne lastnosti dislokacije.
Keywords:smektična A faza, zvita dislokacija, smektični translacijski ureditveni parameter, Landau – de Gennesov fenomenološki model, gostota proste energije, Euler – Lagrangove enačbe, Eulerjeva metoda, robni pogoji inducirani z nanodelci
Place of publishing:Maribor
Publisher:[D. Črešnar]
Year of publishing:2013
PID:20.500.12556/DKUM-41217 New window
UDC:53(043.2)
COBISS.SI-ID:20038408 New window
NUK URN:URN:SI:UM:DK:HFEW2ZKH
Publication date in DKUM:10.01.2022
Views:1065
Downloads:44
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:Effects of Nanoparticles on Screw Dislocation Structures in Smectic A phase
Abstract:In the seminar we study how nanoparticles effect the screw dislocation structure in smectic A phase of liquid crystals. To describe the system we introduce an order parameter, the which we use in the Landau – de Gennes phenomenological model. We insert the free energy density of the system into the Euler – Lagrange equation, which we solve numerically with the Euler method. Nanoparticles induce different boundary conditions inside the dislocation core. We compare simulation results of the system with and without nanoparticles.
Keywords:smectic A phase, screw dislocation, smectic translational order parameter, Landau – de Gennes phenomenological model, free energy density, Euler – Lagrange equations, Euler method, nanoparticle induced boundary conditions


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