| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document

Title:Perkolacija anizotropnih nanodelcev v nematičnem tekočem kristalu
Authors:Pajek, Kristina (Author)
Ambrožič, Milan (Mentor) More about this mentor... New window
Kralj, Samo (Co-mentor)
Files:.pdf UN_Pajek_Kristina_2015.pdf (1,14 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Typology:2.11 - Undergraduate Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V diplomskem delu smo teoretično študirali možnost uporabe zunanjega polja za preklapljanje med perkolirano in neperkolirano konfiguracijo nanodelcev v binarnem sistemu mehke snovi, npr. v mešanici nematičnega tekočega kristala in podolgovatih nanodelcev. Za direktni vpliv na orientacijski red nematične komponente lahko uporabimo zunanje magnetno polje. To polje ne vpliva nujno direktno na smeri dolgih osi nanodelcev (kot so npr. ogljikove nanocevke). Namesto direktne reorientacije lahko vpliva na smeri nanodelcev prek sterične interakcije med molekulami tekočega kristala in nanodelci. Ena od mogočih aplikacij tega sestavljenega sistema je uporaba magnetnega polja za preklapljanje med električno prevodno (perkolirano) in neprevodno (neperkolirano) strukturo prevodnih nanodelcev. Za izračun termično ravnovesne strukture binarnega sistema smo uporabili Lebwohl-Lasherjev model, za preverjanje perkolacije (npr. električne prevodne poti) pa smo si pomagali s kontinuumskim perkolacijskim modelom za prevodno komponento iz podolgovatih nanodelcev.
Keywords:perkolacijska teorija, nematični tekoči kristal, anizotropni nanodelci, Lebwohl-Lasherjev model, Monte Carlo simulacija
Year of publishing:2015
Publisher:[K. Pajek]
Source:Maribor
UDC:532.783(043.2)
COBISS_ID:21703688 Link is opened in a new window
NUK URN:URN:SI:UM:DK:IWWPW0MH
Views:928
Downloads:95
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:FNM
:
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:AddThis
AddThis uses cookies that require your consent. Edit consent...

Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:Percolation of anisotropic nanoparticles in nematic liquid crystal
Abstract:We studied theoretically the possibility of using external field for switching between percolated and non-percolated configuration of nanoparticles in the soft matter binary system, e.g., in the mixture of nematic liquid crystal and elongated nanoparticles. External magnetic field can be used to enhance directly the orientational order of nematic liquid crystal component. Magnetic field need not directly affect the direction of long axes of nanoparticles (such as carbon nanotubes). It may do so indirectly through the steric interaction between liquid crystal molecules and nanoparticles. One possible application of this composed system is to use the magnetic field to switch between electrically conducting (percolated) and insulating (non-percolated) structure of conducting nanoparticles. The Lebwohl-Lasher model is used to calculate the thermal equilibrium structure of the binary system, while the continuous percolation model is used to verify the percolation (e.g., electrical connectivity) of the conducting component made of elongated nanoparticles.
Keywords:percolation theory, nematic liquid crystal, anisotropic nanoparticles, Lebwohl-Lasher model, Monte Carlo simulation


Comments

Leave comment

You have to log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica