Coukouma, Andrew
(2021)
Advancements in 2D Photonic Crystal Hydrogel and Organogel Sensor Fabrication.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
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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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| 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 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/41197 |
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