doktorska disertacija
Aljaž Velikonja (Author), Alenka Maček Lebar (Mentor), Aleš Iglič (Co-mentor)

Abstract

Osnovni gradnik membrane biološke celice je dvojna plast lipidnih molekul, pretežno sestavljena iz glicerofosfolipidov, proteinov ter drugih molekul. Čeprav je celična membrana nehomogena struktura, lahko nekatere njene osnovne fizikalne lastnosti dovolj dobro opišemo s študijem hidriranega ravninskega lipidnega dvosloja, sestavljenega izključno iz lipidnih molekul. Nekatere od teh lastnosti (npr. dolžina in nasičenost maščobnih verig) so odvisne tudi od temperature, zato se s temperaturo spreminjajo tudi lastnosti hidriranega ravninskega lipidnega dvosloja. Zaradi različnih faznih prehodov uporabljenih lipidnih dvoslojev nas je zanimalo, ali imajo uporabljene vrste lipidnih dvoslojev zaradi tega tudi drugačne električne lastnosti, ki so odvisne od temperature. Poleg eksperimentalnega študija električnih lastnosti hidriranih ravninskih lipidnih dvoslojev v odvisnosti od temperature smo proučevali tudi teoretične modele električne dvojne plasti v dotiku z raztopino soli. Pri eksperiment

Keywords

temperatura;ravninski lipidni dvosloji;hidrirani ravninski lipidni dvosloji;električne lastnosti;električni parametri;Langevin-Poisson-Boltzmannov model;Langevin-Bikermanov model;

Data

Language: Slovenian
Year of publishing:
Typology: 2.08 - Doctoral Dissertation
Organization: UL FE - Faculty of Electrical Engineering
Publisher: [A. Velikonja]
UDC: 577.115-026.661(043.2)
COBISS: 10907220 Link will open in a new window
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Other data

Secondary language: English
Secondary title: ELECTRICAL PROPERTIES OF HYDRATED PLANAR LIPID BILAYERS
Secondary abstract: The hydrated planar lipid bilayer is a basic building block of biologic cell membranes. Although the cell membrane is a highly heterogeneous structure, composed of lipids, proteins, carbohydrates and other components, a large number of physical properties of biological cell membrane which are important in physiological processes can be studied also in pure planar lipid bilayer systems. Some of these properties (lipid tail length and saturation) are dependent also on the temperature, therefore temperature dependent properties can be studied. Due to different phase transition of used lipid bilayers, the different electrical properties of hydrated planar lipid bilayers can be expected. Besides experimental work, the hydrated planar lipid bilayer was also studied theoretically as electric double layer in contact with electrolyte. In experimental work the electrical capacitance as parameter of the hydrated planar lipid bilayer thickness and breakdown voltage as parameter of the sta
Secondary keywords: Biološke membrane;Disertacije;
Type (COBISS): Dissertation
Study programme: 1000319
Thesis comment: Univ. v Ljubljani, Fak. za elektrotehniko
Pages: XVIII, 184 str.
ID: 8739631