High-Resolution Optical Characterization of Nanostructures using Metal Antennas
CEN Webinars: Stronger Bonds

High-Resolution Optical Characterization
of Nanostructures using Metal Antennas


Tuesday, June 11, 2013

USA 11:00 a.m. EDT, 10:00 a.m. CDT, 8:00 a.m. PDT, 16:00 BST



Achim Harschuh, Ph.D.
Professor at Ludwig-Maximilians-Universitaet Muenchen
Department Chemie and CeNS


Emily Bones
Associate Editor


Several concepts have been developed in the last decades to overcome the resolution limit of conventional optical microscopy imposed by diffraction. Powerful far-field methods that exploit particular properties of highly fluorescent emitters are capable of 3D imaging with nanoscale resolution. Near-field techniques, on the other hand, make use of the rapid decay of evanescent waves close to pointed probes to visualize sample surfaces. Optical antennas are a promising near-field scheme in which the length-mismatch between the wavelength of visible light and the dimensions of nanoscale objects is bridged by metal nanostructures.

Topics Covered:

• Basics of near-field optical microscopy and its experimental requirements

• Fundamentals of antenna-enhanced near-field optical microscopy and spectroscopy

• Experimental realizations

• Recent applications including photoluminescence, high-resolution raman and photocurrent microscopy of single inorganic nanowires and carbon nanotubes at a spatial resolution of about 20 nm

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