Archived posting to the Leica Users Group, 1999/01/21
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Thought that y'all might be interested in the following article from
today's issue of _Science_...
Nanophase-Separated Polymer Films as
High-Performance Antireflection Coatings
_Science_ 283:520-22.
Stefan Walheim, Erik Schäffer, Jürgen Mlynek, Ullrich Steiner *
Fakultät für Physik, Universität Konstanz, D-78457 Konstanz, Germany.
www.uni-konstanz.de/FuF/Physik/Mlynek/Steiner/
Abstract:
Optical surfaces coated with a thin layer to improve light
transmission are ubiquitous in everyday optical applications
as well as in industrial and scientific instruments. Discovered
first in 1817 by Fraunhofer, the coating of lenses became
standard practice in the 1930s. In spite of intensive research,
broad-band antireflection coatings are still limited by the lack
of materials with low refractive indices. A method based on the
phase separation of a macromolecular liquid to generate nanoporous
polymer films is demonstrated that creates surfaces with high
optical transmission.
..........................................................................
Alexey Merz | URL: http://www.webcom.com/alexey | email: alexey@webcom.com
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| ...A democracy becomes hopelessly weak. and the general good
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| only half-heartedly.... - Marc Bloch, 1940