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SUMMARY:Can Double Negative Media Increase the Effectiveness of Near-Field
  Probes? - Professor Omar Ramahi\, NSERC/RIM Industrial Research Associate
  Chair\, University of Waterloo\, Canada
DTSTART:20080325T100000Z
DTEND:20080325T110000Z
UID:TALK11256@talks.cam.ac.uk
CONTACT:Peter Robinson
DESCRIPTION:In this talk\, we discuss the relevance of DNG media to near-f
 ield microscopy. We introduced a novel mathematical model for the probe-ta
 rget interaction and present a probe sensitivity definition. We show that 
 by introducing a DNG medium between the probe and the target\, not only wo
 uld the evanescent energy interrogating the target increases\, but more im
 portantly\, the probe sensitivity is increased. We demonstrate the potenti
 al for the DNG to increase the probe sensitivity by introducing several nu
 merical experiments for different targets embedded inside a host medium. F
 inally\, we show that the DNG increases the sensitivity of the probe up to
  a specific limit that depends on medium parameters.
LOCATION:Churchill College Møller Centre
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