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Advancements in 2D Photonic Crystal Hydrogel and Organogel Sensor Fabrication

Coukouma, Andrew (2021) Advancements in 2D Photonic Crystal Hydrogel and Organogel Sensor Fabrication. Master's Thesis, University of Pittsburgh. (Unpublished)

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2D photonic crystal hydrogel and organogel sensors are composed of 2D photonic crystals embedded in volume responsive hydrogels and organogels. Hydrogels utilize polymers in water. Organogels utilize polymers in organic solvents. Hydrogels and organogels changes volume due to changing concentrations of analytes such as proteins, enzymes, and small molecules. We measure the hydrogel or organogel volume by using an embedded 2D Photonic Crystal (2DPhC). 2DPhCs utilizes hexagonal monolayers of polystyrene spheres that diffract light at wavelengths that depend upon the 2DPhC particle spacing

In this work, the state of the art of 2D Photonic crystal hydrogel and organogel sensors is advanced. An interpenetrating poly-vinyl alcohol network enabled the use of fragile hydrogels. Macroporous hydrogels increase hydrogel volume responsiveness. I increased the understanding of 2D Photonic Crystal fabrication. Finally, I improved our understanding of the transition of protein hydrogels to protein organogels.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Coukouma, Andrewaec85@pitt.eduaec85
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairAsher,
Committee MemberWaldeck,
Committee MemberMillstone,
Date: 8 October 2021
Date Type: Publication
Defense Date: 26 May 2021
Approval Date: 8 October 2021
Submission Date: 28 May 2021
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 156
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Hydrogel Sensors, Volume Phase Transitions, Photonic Crystals
Date Deposited: 08 Oct 2021 18:50
Last Modified: 08 Oct 2021 18:50


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