Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


ZhaoJ.the (final comments 2).pdf (5.21 MB)

ETD Abstract Container

Abstract Header

Convective Assembly of Rod-shaped Melanosome in Dilute Polymer Solution

Zhao, Jiuzhou
http://rave.ohiolink.edu/etdc/view?acc_num=akron1462211308

Abstract Details

2016, Master of Science, University of Akron, Polymer Science.
Bird feathers have developed most diverse structural colorations. Many of them are produced by orderly packing melanosomes (submicron melanin-filled organelles) structures. These melanosomes come in different morphologies such as spherical, rod-like, and disk-like shapes and they may be solid or hollow. But it is still unclear how such ordered structures of anisotropic melanosomes are formed and it is also challenging to mimic those structures using in-vitro assembly technique. In this work, we extracted rod-shaped melanosomes from crow feathers and investigated their assembly behavior in the evaporating sessile droplets containing polyvinyl pyrrolidone (PVP) or polyethylene oxide (PEO). We used zeta potential to monitor the interaction between polymer and melanosomes, high-speed video to track melanosome movement during evaporation, and optical/electron microscopy to study the packing behavior of melanosomes. We have found melanosomes packed densely at the deposition edge, forming a “coffee ring” pattern after drying PEO-melanosome droplet. While at the same position of PVP-melanosome solution the coffee ring effect was suppressed and melanosome did not form densely packing structure. This is mostly due to the adsorption of PVP on melanosome surface that can bring the particle to the air-water interface instead of arriving at contact line. This work helps our better understanding of anisotropic particles assembly in polymer solution and also makes it possible towards mimicry of the structures of bird feathers.
Ali Dhinojwala (Advisor)
Matthew Shawkey (Committee Member)
44 p.
Materials Science
Self-assemble, melanosome, polymer dilute solution, coffee-ring

Recommended Citations

Citations

  • Zhao, J. (2016). Convective Assembly of Rod-shaped Melanosome in Dilute Polymer Solution [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1462211308

    APA Style (7th edition)

  • Zhao, Jiuzhou. Convective Assembly of Rod-shaped Melanosome in Dilute Polymer Solution. 2016. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1462211308.

    MLA Style (8th edition)

  • Zhao, Jiuzhou. "Convective Assembly of Rod-shaped Melanosome in Dilute Polymer Solution." Master's thesis, University of Akron, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1462211308

    Chicago Manual of Style (17th edition)

akron1462211308
162
© 2016, some rights reserved.Creative Commons License Convective Assembly of Rod-shaped Melanosome in Dilute Polymer Solution by Jiuzhou Zhao is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.