| Summary: | 碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 96 === Holographic data storage is the most promising data storage technology in the next generation due to the advantages of the high data storage density and high data transfer rate. A good dimensional stability of matrix and photorefraction effect of the grating are the two most important factors for holographic storage. In this study, a blue laser holographic material with low shrinkage was prepared. The organic-inorganic hybrid matrix is triethoxysilylpropyl polyethyleneglycol carbamate (TSPEG) homogeneously bonded with tetraethyl orthosilicate (TEOS) prepared by sol-gel method. Diallyl phthalate pre-polymer (DAPP) and 9,10-Phenanthrenequinone (PQ) were used as a monomer and a photoinitiator, respectively. Data recording was by 407 nm laser source. The photoinduced polymerization of DAPP by PQ was demonstrated. The effect of matrix composition was investigated by UV-vis, FTIR, DSC, TGA, SEM and AFM.
The result shows that blue laser holographic material with high diffraction efficiency of 66% was prepared in this study. DAPP monomer and PQ photoinitiator is able to record data by 407nm blue laser. The shrinkage measurement showed that the blue laser holographic material with TSPEG/TEOS=0.2 has shrinkage as low as 0.145%.
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