7/24/2019 Aplicatiile Cristalelor Lichide (1)

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Aplicatiile cristalelor lichide

Cristalele lichide sunt substanecare se prezint ntr-o stare de

agregarea materieicare are proprieti care sunt o combinaie a

proprietilor unui lichidconvenional i cele ale unui solidn

stare cristalin. Spre exemplifcare, un cristal lichid de multe

ori abreviatla CLsau LC! poate curge aidoma oricrui lichid, dar

aremoleculelesale aran"ate sau orientate aidoma unor cristale.

#xist mai multe tipuri di$erite de $aze ale cristalelor lichide, care pot f

di$ereniate bazat pe proprietile lor di$erite, aa cum ar f dubla

re$raciesau bire$ringena. %zute la microscop, prin utilizarea unei surse

de luminpolarizat, $azele di$erite ale cristalelor lichide apar

av&nd texturidi$erite. 'onele de schimbare a texturii structurii cristalelor

lichide corespund domeniului unde moleculele substanei sunt orientatepe direciidi$erite. (e un anumit domeniu, moleculele oricrui C) sunt clar

orientate. Substanele i materialele de tipul )C nu sunt ntotdeauna ntr-o

$az de cristal lichid, aidoma apeicare nu este ntotdeauna n $aza lichid.

Cristalele lichide pot f clasifcate ca find termotropicei liotropice.

Cristelele lichide termotropice au o $az de tranzi*ien starea de C) pe

msur ce temperatura se schimb, n timp ce tranziia de $az a

substanelor liotropice este determinat de

concentraia mesogenuluidin solvent, de obicei ap, la care se adaug i

in+uena temperaturii.

https://ro.wikipedia.org/wiki/Substan%C8%9B%C4%83_chimic%C4%83https://ro.wikipedia.org/wiki/Stare_de_agregarehttps://ro.wikipedia.org/wiki/Stare_de_agregarehttps://ro.wikipedia.org/wiki/Materiehttps://ro.wikipedia.org/wiki/Lichidhttps://ro.wikipedia.org/wiki/Solidhttps://ro.wikipedia.org/wiki/Cristalhttps://ro.wikipedia.org/wiki/Abrevierehttps://ro.wikipedia.org/wiki/CLhttps://ro.wikipedia.org/wiki/LChttps://ro.wikipedia.org/wiki/Molecul%C4%83https://ro.wikipedia.org/wiki/Refrac%C8%9Bie_dubl%C4%83https://ro.wikipedia.org/wiki/Refrac%C8%9Bie_dubl%C4%83https://ro.wikipedia.org/wiki/Microscophttps://ro.wikipedia.org/wiki/Lumin%C4%83https://ro.wikipedia.org/wiki/Polarizarehttps://en.wikipedia.org/wiki/Texture_(crystalline)https://ro.wikipedia.org/w/index.php?title=Direc%C8%9Bie&action=edit&redlink=1https://ro.wikipedia.org/wiki/Ap%C4%83https://ro.wikipedia.org/w/index.php?title=Termotropie&action=edit&redlink=1https://ro.wikipedia.org/w/index.php?title=Liotropie&action=edit&redlink=1https://en.wikipedia.org/wiki/Phase_transitionhttps://en.wikipedia.org/wiki/Mesogenhttps://ro.wikipedia.org/wiki/Solventhttps://ro.wikipedia.org/wiki/Ap%C4%83_(molecul%C4%83)https://ro.wikipedia.org/wiki/Temperatur%C4%83https://ro.wikipedia.org/wiki/Stare_de_agregarehttps://ro.wikipedia.org/wiki/Stare_de_agregarehttps://ro.wikipedia.org/wiki/Materiehttps://ro.wikipedia.org/wiki/Lichidhttps://ro.wikipedia.org/wiki/Solidhttps://ro.wikipedia.org/wiki/Cristalhttps://ro.wikipedia.org/wiki/Abrevierehttps://ro.wikipedia.org/wiki/CLhttps://ro.wikipedia.org/wiki/LChttps://ro.wikipedia.org/wiki/Molecul%C4%83https://ro.wikipedia.org/wiki/Refrac%C8%9Bie_dubl%C4%83https://ro.wikipedia.org/wiki/Refrac%C8%9Bie_dubl%C4%83https://ro.wikipedia.org/wiki/Microscophttps://ro.wikipedia.org/wiki/Lumin%C4%83https://ro.wikipedia.org/wiki/Polarizarehttps://en.wikipedia.org/wiki/Texture_(crystalline)https://ro.wikipedia.org/w/index.php?title=Direc%C8%9Bie&action=edit&redlink=1https://ro.wikipedia.org/wiki/Ap%C4%83https://ro.wikipedia.org/w/index.php?title=Termotropie&action=edit&redlink=1https://ro.wikipedia.org/w/index.php?title=Liotropie&action=edit&redlink=1https://en.wikipedia.org/wiki/Phase_transitionhttps://en.wikipedia.org/wiki/Mesogenhttps://ro.wikipedia.org/wiki/Solventhttps://ro.wikipedia.org/wiki/Ap%C4%83_(molecul%C4%83)https://ro.wikipedia.org/wiki/Temperatur%C4%83https://ro.wikipedia.org/wiki/Substan%C8%9B%C4%83_chimic%C4%83