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Title:Soft matter in motion: from actin to active emulsions
Author(s):Tsang, Chi Hang Boyce
Director of Research:Granick, Steve
Doctoral Committee Chair(s):Schweizer, Kenneth S
Doctoral Committee Member(s):Gruebele, Martin; Hubler, Albert
Department / Program:Physics
Discipline:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Soft material
microscopy
image processing
Abstract:Using microscope as a discovery tool, we surveyed a range of soft material systems, including filamentous actin, liquid crystal droplet and block copolymer to study their dynamics under equilibrium and non-equilibrium conditions. By following the motion of filamentous actin under a fluorescence microscope, we directly observed a width-varying confinement tube in an entangled solution and its implication on the dynamics of polymers. We then considered the correlation between motions of different filamentous actin to study how the unique structure actin network led to such correlation. On the other hand, liquid crystal droplets under concentrated surfactant solution were observed to slowly solubilize into an aqueous phase. During this time, the oscillatory aggregation was tracked and we studied the mechanism of this self-oscillation. On a smaller scale, communication could be observed among individual droplets using polarized light microscopy. Lastly, we studied the photosensitivity of an azobenzene-funcationalized triblock copolymer with a customized microscope with blue and ultraviolet light illumination.
Issue Date:2016-06-28
Type:Thesis
URI:http://hdl.handle.net/2142/92905
Rights Information:Copyright 2016 Boyce Tsang
Date Available in IDEALS:2016-11-10
Date Deposited:2016-08


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