Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3078232
Keywords
holographic storage; nanocomposites; nanofabrication; nanoparticles; photochromism; silver; thin films; titanium compounds; ultraviolet radiation effects
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Funding
- National Natural Science Foundation of China [50725205, 50802014]
- Science Foundation for Young Teachers of Northeast Normal University [20080201]
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Silver nanoparticles deposited on TiO2 nanoporous films exhibited unique photochromic property under the irradiation of visible light. Here we investigated the application of photochromic Ag/TiO2 nanocomposite film in holographic data storage. Stable holographic fringes were formed on the Ag/TiO2 film using two coherent green lasers as writing beams, and these fringes could be erased with ultraviolet irradiation. These observations are consistent with the photochromism of Ag/TiO2 nanocomposite film and can be well explained by the visible light-stimulated dissolution and ultraviolet light-stimulated regeneration of silver nanoparticles in TiO2 matrix.
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