Text Only Queen's U. Directory Contact: Queen's  |  Physics
 queensu.ca   physics.queensu.ca    


Home

............................................

  General Information

............................................
 
Contact Us

.....................................
 
Maps and Directions

.....................................
 
Colloquia and Talks

.....................................
 
Department News

.....................................
 
Employment

.....................................
 
Facilities

.....................................
 
IT Support

.....................................
 
About Queen's

.....................................
 
About Kingston

.....................................

Undergrad Studies

............................................

Graduate Studies

............................................

Research Groups

............................................

Faculty & Staff

............................................

Alumni & Friends

............................................

Visitors & Residents

............................................

Queen's Observatory

............................................

 
 Upcoming Talks        Past Talks        Calendar View

Departmental Colloquium


Challenging the Limits of Diffraction

Reuven Gordon
University of Victoria

Time
 
Fri. September 30, 2011     1:30 PM     Stirling A

Abstract
 
This talk will show how to overcome three limits of optical diffraction. First, it will be shown how to focus light below the Abbe diffraction limit. Next it will be shown how to squeeze light through subwavelength holes in a metal screen, allowing for 100% transmission, in contrast to Bethe's aperture theory. Finally, it will be shown how to optically trap dielectric nanoparticles (~10 nm) with powers orders of magnitude smaller than required by conventional by Rayleigh scattering trapping formulations, which has interesting applications for manipulating viruses and quantum dots. Both theoretical and recent experimental results will be presented.

List of upcoming talks and colloquia

Calendar for the current month



  Back to top
©2013 Department of Physics, Engineering Physics & Astronomy
Queen's University
Kingston, Ontario
K7L 3N6 Canada
Web Inquiries
webmaster@physics.queensu.ca
Departmental Inquiries
dept@physics.queensu.ca