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oai:www.ideals.illinois.edu:2142/88256 2023-07-11 col_2142_5131 col_2142_13836 com_2142_5130 com_2142_13835 com_2142_234

Granick, Steve Averback, Robert Kilian, Kristopher A. Chen, Qian Yu, Changqian 2015-09-29T21:02:59Z 2015-09-29T21:02:59Z 2017-09-30T09:15:18Z 2015-08 2015-06-30 The theme of this thesis concerns the fundamental questions in soft matter, in particular, the dynamics of vesicle membranes, interfacial polymers, colloidal particles. Optical imaging was applied three distinct systems to reveal the underlying physical processes that were hindered by other prior indirect measurements. First, mechanical responses of both polymer and lipid vesicles were investigated by watching their shape transformations under environmental variations, mostly under osmotic shocks, which emitted new prospects on membrane elasticity, instability and kinetics. Furthermore, with statistical analysis of particle and pattern tracking, three classical questions in polymer physics regarding polymer-surface interactions were revisited: adsorption, surface diffusion, and dewetting. The final remark of this thesis presented inter-surface interaction induced by binary liquid mixture near the demixing temperature. Both colloidal assembly and physical chemistry of binary liquid were examined through Janus particle. All these studies followed the same spirit of using direct imaging to declare the unseen dynamical processes in soft matter. Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2017-08-01 The student, Changqian Yu, accepted the attached license on 2015-06-29 at 12:37. The student, Changqian Yu, submitted this Dissertation for approval on 2015-06-29 at 13:48. This Dissertation was approved for publication on 2015-06-30 at 10:26. DSpace SAF Submission Ingestion Package generated from Vireo submission #8318 on 2015-09-29 at 15:05:20 Made available in DSpace on 2015-09-29T21:02:59Z (GMT). No. of bitstreams: 3 YU-DISSERTATION-2015.pdf: 58897283 bytes, checksum: 843385422d86f0cfc173db56ec177e65 (MD5) Latex_Thesis_Changqian_Yu_PhD_MatSE.zip: 78187903 bytes, checksum: 725c8057e0b4831b3f47eadf420d348e (MD5) LICENSE.txt: 4209 bytes, checksum: 934dd98ada308ed75bb35810e2e42f72 (MD5) Previous issue date: 2015-06-30 Embargo set by: Seth Robbins for item 89536 Lift date: 2017-09-29T21:03:28Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 89536 Lift date: 2017-09-29T21:08:35Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Limited Restriction Lifted for Item 89536 on 2017-09-30T09:15:18Z. application/pdf http://hdl.handle.net/2142/88256 en Copyright 2015 Changqian Yu soft matter dynamics imaging Seeing the unseen dynamics in soft matter text text 2015-8 Materials Science & Engineerng Materials Science & Engr University of Illinois at Urbana-Champaign Dissertation Ph.D.