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Subproject b2:
Photoaddressable Block Copolymers for Holographic Data Storage Applications
Prof. Hans-Werner Schmidt (Macromolecular Chemistry I) Prof. Lothar Kador (Experimental Physics)
In subproject B2, photoaddressable block copolymers are investigated for
holographic data storage applications. In the past years, optimizing the
systems and refining the physical methods resulted in great progress regarding
the long-term stability of the holographic gratings, preparation of thick
samples (1 mm) by injection molding - which are a prerequisite for efficient
angle multiplexing -, and rewritability. Central aspects of the following
proposal are (i) increasing the sensitivity by using photoaddressable organic
glasses and photopolymerization, (ii) further improvement of the long-term
stability (e.g., by irreversible cross-linking), and (iii) optimizing the
optical quality of thick samples as a prerequisite for error-free storage and
read-out of two-dimensional data fields.
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Sample with several inscribed holograms between crossed polarizers
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