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SUMMARY:Liquid Crystal Nanotronics - Dr Tim Wilkinson
DTSTART:20080229T160000Z
DTEND:20080229T170000Z
UID:TALK10970@talks.cam.ac.uk
CONTACT:Tim Wilkinson
DESCRIPTION:A new type of materials based on a hybrid combination of spars
 e nanotube arrays and liquid crystals to create a photonic micro-optical d
 evice. An array of electrodes are made from vertically aligned multiwall c
 arbon nanotubes which are used to address a liquid crystal cell. The elect
 rodes create a Gaussian electric field profile which is used to reorient a
  planar aligned nematic liquid crystal. The variation in refractive index 
 within the liquid crystal layer acts like a graded index optical element w
 hich can be varied by changing the applied electric field to the carbon na
 notube. Figure 1 shows results taken from a device fabricated with a 10um 
 pitch between the micro-optical elements.
LOCATION:CAPE building main atrium
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