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undergraduate thesis
Sinteza i svojstva tekućih kristala
2020. urn:nbn:hr:182:686311
Tančak, Elena
Josip Juraj Strossmayer University of Osijek
Department of Chemistry

Cite this document

Tančak, E. (2020). Sinteza i svojstva tekućih kristala (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:686311

Tančak, Elena. "Sinteza i svojstva tekućih kristala." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:182:686311

Tančak, Elena. "Sinteza i svojstva tekućih kristala." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:182:686311

Tančak, E. (2020). 'Sinteza i svojstva tekućih kristala', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:182:686311

Tančak E. Sinteza i svojstva tekućih kristala [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2020 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:182:686311

E. Tančak, "Sinteza i svojstva tekućih kristala", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:182:686311

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Metadata
TitleSinteza i svojstva tekućih kristala
Title (english)Synthesis and properties of liquid crystals
AuthorElena Tančak
MentorTomislav Balić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
Osijek
Defense date and country2020-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Tekući kristali su tvari koje posjeduju svojstva tekućina i čvrstih tvari. Njihove molekule imaju uređenu strukturu jer posjeduju određenu orijentaciju i visok stupanj uređenosti kao što su molekule u kristalima, no za razliku od čvrstih tvari su fluidni te se kreću poput tekućina. Ono što ih od tekućina još razlikuje, izuzev visokog stupnja uređenosti i orijentiranih molekula, je svojstvo anizotropije koje je osnova fizikalnih svojstava tekućih kristala. Ovisno o vanjskim uvjetima u kojima se nalaze, stupnju uređenosti i orijentaciji molekula mogu biti postojani u dvije osnovne faze: termotropnoj fazi koja egzistira u točno određenom temperaturnom intervalu izvan kojega je faza tekućeg kristala narušena te liotropnoj fazi koja osim o temperaturi sustava ovisi i o njegovoj koncentraciji. Tekući kristali također grade polimerne strukture od kojih je najpoznatiji primjer poli-parafenilen tetraftalamid, komercijalnog naziva Kevlar. Najvažnija primjena tekućih kristala u današnjoj uporabi su dobro poznati LCD (engl. Liquid crystal display) zasloni koji imaju široku primjenu u raznim uređajima.
Abstract (english)
Liquid crystals are materials that possess both liquid and crystalline properties. Their molecules have a very organized structure because they possess distinct orientation and a high degree of organization as molecules in crystals. But, apart from solid state, they flow as fluids. Excluding the high degree of organization, anisotropy is also a property that distinguishes liquid crystals from liquids, and that is the basis of their physical properties. Depending on external conditions, degree of organization and orientation of molecules, they can be found in two basic phases: thermotropic which is stable in a certain temperature interval and lyotropic phase which, besides temperature, depends on the concrentration of the solution. Liquid crystals can also build polymer structures and the most known is Poly(p-phenylene terephthalamide), known as Kevlar. The most important role of liquid crystals in todays life are well known LCD (liquid crystal displays), displays used in various devices.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:686311
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2020-11-12 10:42:47