The Bernstein Center for Computational Neuroscience Freiburg Announcement for the next
Informal Seminar
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Dr. Ivo Vellekoop
University of Twente, Enschede, Holland
Opaque lenses: controlling light propagation in disordered materials | |
June 5th, 2008 2:00 pm |
Center Court (5th floor), Schaenzlestr. 1 |
Abstract: White materials, such as white paint, bone and brain tissue,
scatter light. Light that propagates in such materials will become diffuse
(i.e. it loses directionality). For a long time, it was thought that
diffusion of light is irreversible. However, we have shown experimentally
that diffusion of light can be reversed. By shaping the incident light beam,
we have made normally opaque objects, such as an eggshell, focus light.
These opaque objects focus the transmitted light as sharply as a lens.
Additionally, light was focused deep inside opaque objects. I will present
the basic ideas, the apparatus and algorithms, and our experimental results.
In addition, I will discuss some potential applications of our methods.
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Host: Dr. Clemens Boucsein |
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The talk is open to the public. Guests are cordially invited!
www.bccn.uni-freiburg.de |