Study the fluid-solid transitions in soft colloids using particle tracking microrheology.
聚(N-異丙基丙烯酸醯胺)(PNIPAM)微凝膠是一種内部有化学交联的三維網絡結構的軟膠體。這種微凝膠的物理性質是介於硬球膠體和超軟軟的星形聚合物或者膠束之間的。根據微粒的柔軟程度,微凝膠可以發生網絡互穿或者形變。因此塞滿微凝膠的體系的有效體積分數可以遠遠超過硬球系統裏的緊密堆積體積分數。這樣的系統會出現比硬球系统更加豐富的相行為。然而現在仍然缺乏對軟膠體系統在超過緊密堆積體積分數時變現的機構和性質的研究。特別是有些理論預測出的相行為仍然還沒被實際的實驗觀測的到。 === 本論文採用了一種新穎的方式去研究微凝膠體系的微流變,這種方法結合了粒子追蹤微流變和磁鑷系統。這種方法本質上是通過一種消逝波...
Other Authors: | Hua, Li. |
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Format: | Others |
Language: | English Chinese |
Published: |
2013
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Subjects: | |
Online Access: | http://library.cuhk.edu.hk/record=b5549317 http://repository.lib.cuhk.edu.hk/en/item/cuhk-328745 |
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