TY - GEN
T1 - Spectral analysis of surfaces at subwavelength resolution
AU - Kopelman, Raoul
AU - Smith, Steven
AU - Tan, Weihong
AU - Zenobi, Renato
AU - Lieberman, Klony
AU - Lewis, Aaron
PY - 1992
Y1 - 1992
N2 - Near-field scanning optical microscopy has reached a resolution limit of 20 nm, which is about 1/30 of the wavelength employed. It can be used in reflection, transmission, fluorescence, etc., modes. Subwavelength luminescent light sources have been constructed, which can be used for both scanning optical and scanning exciton microscopy. The latter has a theoretical resolution limit equal or better than scanning tunneling microscopy. The major advantage of the optical and exciton scanning microscopies is their noninvasive nature, i.e., their application to nonconducting and soft surfaces. For instance, polymeric surfaces, Langmuir-Blodget films, and biological samples can be investigated in-situ, in air or water, and without radiation or otherwise induced damage. Luminescent or Raman active surface sites or molecules can be detected, in principle, with atomic or molecular resolution and, furthermore, characterized via single site luminescence or Raman spectra. The goal of this research is a fluorescence nanoscope that will have the capability to zoom- in nondestructively, in water, air, or vacuum, from the limits of resolution of lens-based confocal light microscopy (200 nm) to molecular dimensions of 1 nm.
AB - Near-field scanning optical microscopy has reached a resolution limit of 20 nm, which is about 1/30 of the wavelength employed. It can be used in reflection, transmission, fluorescence, etc., modes. Subwavelength luminescent light sources have been constructed, which can be used for both scanning optical and scanning exciton microscopy. The latter has a theoretical resolution limit equal or better than scanning tunneling microscopy. The major advantage of the optical and exciton scanning microscopies is their noninvasive nature, i.e., their application to nonconducting and soft surfaces. For instance, polymeric surfaces, Langmuir-Blodget films, and biological samples can be investigated in-situ, in air or water, and without radiation or otherwise induced damage. Luminescent or Raman active surface sites or molecules can be detected, in principle, with atomic or molecular resolution and, furthermore, characterized via single site luminescence or Raman spectra. The goal of this research is a fluorescence nanoscope that will have the capability to zoom- in nondestructively, in water, air, or vacuum, from the limits of resolution of lens-based confocal light microscopy (200 nm) to molecular dimensions of 1 nm.
UR - http://www.scopus.com/inward/record.url?scp=0026467390&partnerID=8YFLogxK
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AN - SCOPUS:0026467390
SN - 0819407836
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 33
EP - 40
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Int Soc for Optical Engineering
T2 - Environmental and Process Monitoring Technologies
Y2 - 20 January 1992 through 22 January 1992
ER -