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Synthesis of materials inside templates has emerged
as a useful and versatile technique to generate three-dimensional
nanostructures. Previous approaches use templates consisting
of microporous membranes, zeolites, and crystalline
colloidal arrays. These have been used to construct
elaborate electronic, mechanical, or optical structures.
Porous Si is an attractive candidate as a template because
the porosity and average pore size can be readily tuned
by adjustment of the electrochemical preparation conditions.
Additionally, elaborate 2- and 2.5-dimentional photonic
crystals are readily prepared in porous Si.
Researchers at the University of California, San Diego
have demonstrated the templating of solution-cast and
injection molded thermoplastic organic, inorganic, and
biopolymers in porous Si multilayer (Rugate, Bragg filter)structures.
The castings retain the photonic structure of the template.
Demonstrated uses of the castings include vapor sensors,
deformable and tunable optical filters, as well as self-reporting,
bioresorbable drug delivery materials.
References: Summary of Professor Michael Sailor's porous silicon-based technology platform; June 2005.
"Smart Dust" presentation 2005
This technology is available for licensing.
Case Number: SD2003-024
LabLink: http://chem-faculty.ucsd.edu/sailor/research/
Inquiries To: invent@ucsd.edu
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