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Določitev površinske napetosti nematskega tekočega kristala in nekaterih izotropnih kapljevin na obdelanih steklenih površinah z metodo kapilarnega dviga : magistrsko delo = Determining the surface tension of a nematic liquid crystal and some isotropic liquids in contact with functionalised glass surfaces by capillary rise : master's thesisRajh, DenisV magistrskem delu so predstavljene meritve močenja in kapilarnega dviga vode, glicerola, silikonskega olja in tekočega kristala na obdelanih steklenih površinah z namenom določitve površinske ... napetosti. Delo je sestavljeno iz teoretičnega opisa kapilarnih pojavov s poudarkom na računanju oblike meniskusa in višine kapilarnega dviga, predstavitve fizikalnih lastnosti uporabljenih materialov in eksperimentalnih metod ter rezultatov. Razvil sem postopek merjenja kontaktnih kotov kapljevin na ravnih podlagah s prilagojenim optičnim mikroskopom s horizontalno postavitvijo objektivov, ki je bil uporaben tudi za določanje oblike meniskusov in meritve višin kapilarnih dvigov v cilindričnih kapilarah. Ugotovil sem, da ima obdelava steklenih površin s silanom različen vpliv na močenje polarnih in nepolarnih kapljevin, kar se pozna tudi pri spreminjanju višine kapilarnih dvigov. Pokazal sem tudi, da se anizotropne lastnosti nematskega tekočega kristala izrazijo v anizotropiji površinske napetosti, ki je odvisna od robnih pogojev na površini stekla. Metoda kapilarnega dviga v ozkih cilindričnih kapilarah se je izkazala kot enostaven, učinkovit, ponovljiv in dovolj natančen način določanja površinske napetosti različnih vrst kapljevin, ki je uporabna tudi za raziskovanje vpliva kemijske funkcionalizacije površin na lastnosti močenja.Type of material - master's thesis ; adult, seriousPublication and manufacture - Maribor : [D. Rajh], 2017Language - slovenianCOBISS.SI-ID - 23191304
Author
Rajh, Denis
Other authors
Tkalec, Uroš
Topics
Univerzitetna in visokošolska dela |
magistrska dela |
kapilarni dvig |
močenje |
površinska napetost |
kapljevine |
tekoči kristali |
master theses |
capillary rise |
wetting |
surface tension |
liquids |
liquid crystals
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Library | Call number – location, accession no. ... | Copy status |
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Miklošič Library FPNM, Maribor | D MAG 53 RAJH D. Določitev IN: 920170016 |
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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Rajh, Denis | 52495 |
Tkalec, Uroš | 26467 |
Source: Personal bibliographies
and: SICRIS
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