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Raziskave smektičnih tekočih kristalov z dielektrično spektroskopijo in sipanjem hladnih nevtronov : doktorska disertacijaFilipič, CeneDelo obravnava rezultate raziskav smektičnih tekočih kristalov z dielektrično spektroskopijo in sipanjem hladnih nevtronov, pa tudi z meritvami temperaturne odvisnosti spontane polarizacije, kota ... nagiba molekul, periode vijačnice, specifične toplote in sipanjem rentgenske svetlobe. V delu so predstavljeni rezultati meritev vseh omenjenih metod in pokazano je, kako se te merske metode uporabljajo pri določitvi statičnih in dinamičnih lastnosti nekaterih smektičnih tekočih kristalov, struktutre posameznih smektičnih faz ter značilnosti faznih prehodov med njimi. V delu sta še posebej obravnavani metodi dielektrične spektroskopije in kvazielastičnega sipanja hladnih nevtronov pri proučevanju dinamike tekočekristalnih faz, kjer je bilo ugotovljeno, da se metodi dopolnjujeta. Ker je v delu poudarek na meritvah kiralnih sistemov z dielektrično spektroskopijo, smo v nekaj feroelektričnih tekočih kristalih in v antiferoelektričnem tekočem kristalu MHPOBC v vseh fazah izmerili statične in dinamične lastnosti sistema. S primerjavo rezultatov meritev temperaturne odvisnosti spontane polarizacije, kota nagiba molekul, periode vijačnice, specifične toplote, relaksacijskih frekvenc in dielektričnih intenzitet mehkega in Goldstonovega načina nihanja v feroelektričnem tekočem kristalu DOBAMBC in njihovih izračunanih vrednostih smo pokazali, da fenomenološka teorija Landauovega tipa kvalitativno in kvantitatino dobro opiše feroelektrični fazni prehod iz smektične A (Sm A) v kiralno smektično C (Sm C*) fazo.Type of material - dissertationPublication and manufacture - Ljubljana : [C. Filipič], 1997Language - slovenian, englishCOBISS.SI-ID - 2930710
Author
Filipič, Cene
Other authors
Levstik, Adrijan |
Žekš, Boštjan
Topics
smektični tekoči kristali |
dielektrična spektroskopija |
sipanje hladnih nevtronov |
polarizacija |
specifična toplota |
nihanje |
disertacije
Library | Call number – location, accession no. ... | Copy status |
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Library of Technical Faculties, Maribor | pisarna A-003 (FERI) DD FILIPIČ C. RAZISKAVE | available - reading room |
University of Maribor Library | Skladišče II 42040 | available - reading room |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Filipič, Cene | 04347 |
Levstik, Adrijan | 00199 |
Žekš, Boštjan | 01068 |
Source: Personal bibliographies
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