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Phase behavior of two colloidal susp...

Zhao, Kun.

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Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system./
作者:	Zhao, Kun.
面頁冊數:	133 p.
附註:	Adviser: Paul M. Chaikin.
Contained By:	Dissertation Abstracts International68-01B.
標題:	Engineering, Materials Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3250046

Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system.
Zhao, Kun.

Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system. - 133 p.

Adviser: Paul M. Chaikin.

Thesis (Ph.D.)--Princeton University, 2007.

This thesis investigates the phase behavior of two colloidal systems.Subjects--Topical Terms:

1017759
Engineering, Materials Science.

Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system.
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035 $a (UMI)AAI3250046
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040 $a UMI $c UMI
100 1 $a Zhao, Kun. $3 1293697
245 1 0 $a Phase behavior of two colloidal suspensions: A hard sphere system and a hard disk system.
300 $a 133 p.
500 $a Adviser: Paul M. Chaikin.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0353.
502 $a Thesis (Ph.D.)--Princeton University, 2007.
520 $a This thesis investigates the phase behavior of two colloidal systems.
520 $a In the first part, a hard sphere system consisting of PMMA-PHSA spheres(poly-(methyl methacrylate) spheres with a grafted layer of poly-(12-hydroxy steric acid)) in organic solvent is studied using the electric bottle method. A wedge-shaped cell is used in this method. By applying the electric field, a density gradient of the system is obtained and the liquid-crystal transition is found. The experimental results agree with those from a quantitative theory. The wedge cell is also very useful in the studying of glass transitions.
520 $a In the second part, an anisotropic colloidal system consisting of plate-like(disk) particles is investigated. The plate-like particles are fabricated using photolithography. These particles are birefringent. Their response to an AC electric field is also studied. In a horizontal field they will form ribbon-like chains while in a vertical field they can stand on their edges when the field is high enough. These standing disks behave similar to two dimensional rectangles. The phase diagram of these standing disks is obtained and a Kosterlitz-Thouless(KT) transition from isotropic to nematic phase is found. Near the KT transition, a tetratic-like region is also found, where the tetratic correlations are of a longer range than the nematic. The results from the analysis of topological defects show that this occurs due to the proliferation of Ising-like grain boundaries that disrupt the nematic order but preserve tetratic correlations, at lengths shorter than the spacing between free disclinations.
590 $a School code: 0181.
650 4 $a Engineering, Materials Science. $3 1017759
650 4 $a Physics, Condensed Matter. $3 1018743
690 $a 0611
690 $a 0794
710 2 0 $a Princeton University. $3 645579
773 0 $t Dissertation Abstracts International $g 68-01B.
790 $a 0181
790 1 0 $a Chaikin, Paul M., $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3250046