Parmenter, Brett

Spalding, Facutly Advisor, Gabriel C.

Digital Commons @ Illinois Wesleyan University

Illinois Wesleyan UniversityDigital Commons @ IWUJohn Wesley Powell Student ResearchConference 2004, 15th Annual JWP ConferenceApr 17th, 9:00 AM - 10:00 AMA Novel Method for Super-Resolution OpticalMicroscopyBrett ParmenterIllinois Wesleyan UniversityGabriel C. Spalding, Facutly AdvisorIllinois Wesleyan UniversityFollow this and additional works at: http://digitalcommons.iwu.edu/jwprcThis Event is brought to you for free and open access by The Ames Library, the Andrew W. Mellon Center for Curricular and FacultyDevelopment, the Office of the Provost and the Office of the President. It has been accepted for inclusion in Digital Commons @ IWU bythe faculty at Illinois Wesleyan University. For more information, please contact digitalcommons@iwu.edu.©Copyright is owned by the author of this document.Brett Parmenter and Gabriel C. Spalding, Facutly Advisor, "A Novel Method for Super-Resolution Optical Microscopy"(April 17, 2004). John Wesley Powell Student Research Conference. Paper 21.http://digitalcommons.iwu.edu/jwprc/2004/posters/21Poster Presentation P37 A NOVEL METHOD FOR SUPER-RESOLUTION OPTICAL MICROSCOPY Brett Pannenter and Gabriel C. Spalding* Department of Physics, Illinois Wesleyan University Department of Physics, Northwestern University Even neglecting aberrations, conventional optical microscopes are limited (essentially by the uncertainty principle) to a resolution on the order of the wavelength of light used. The Near-Field Scanning Optical Microscope (NSOM) is able to overcome this fundamental limitation, by using evanescent fields. The most common NSOM design uses a fiber optic pulled down to a very fine tip with a sub-wavelength aperture at the end. The resolution of this type of microscope is limited only by the size of the aperture used. Unfortunately, as shown by Hans Bethe, the intensity of the light allowed through a sub-wavelength aperture falls off as the sixth power of the radius. Our alternative uses an optically trapped, resonant nanoparticle as a sub-wavelength, scanned probe. We expect to achieve super-resolution with improved signal-to-noise. 

A Novel Method for Super-Resolution Optical Microscopy

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A Novel Method for Super-Resolution Optical Microscopy

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