Surface Relief Grating on Thin Film Containing Azobenzene-Polymer Material Linked by Hydrogen-Bonding
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Authors
Al Atmah, Nadiyah
Date
Type
thesis
Language
eng
Keyword
Surface Relief Grating , Hydrogen Bonding , Isomerization , Thin Films
Alternative Title
Abstract
Thin films of azobenzene-polymer material show unique photo-responsive behavior under irradiation with two interfering laser beams. That leads to generate surface inscription pattering known as Surface Relief Grating (SRG). Moreover, two different types of polymers were used in this research, and we used them with new series of azobenzene compounds. In fact, the H-bonding between donor and acceptor system was applied to create the link between the polymer and the azobenzene materials. The chromophore units in the azobenzene were attached to the polymer backbone through hydrogen bonding. In this research, we determined the efficiency of hydrogen bond to form SRG on azo-polymer thin films. The UV-VIS absorption spectra of the azo-polymer film showed broad band extending from 400-700 nm with maximum occurring at 430-580 nm. The laser’s wavelength was selected within the absorption band. Azo-polymer thin film was irradiated with a 532 nm green laser at room temperature. The obtained grating was confirmed by AFM scanning method, and grating depth up to 86 nm was observed.
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ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.