高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 1.

• Plenary Lectures •    下一篇

Noninear Optical Spectroscopy for Studies of Surfaces

SHEN Yuen-Ron   

  1. Physics Deparatment, University of California, Berkeley, California, U. S. A
  • 出版日期:2000-12-31 发布日期:2000-12-31
  • 基金资助:

    The work was supported by the U.S. Department of Energy.

Noninear Optical Spectroscopy for Studies of Surfaces

SHEN Yuen-Ron   

  1. Physics Deparatment, University of California, Berkeley, California, U. S. A
  • Online:2000-12-31 Published:2000-12-31
  • Supported by:

    The work was supported by the U.S. Department of Energy.

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摘要：

Infrared-visible sum-frequency generation has been developed into a powerful vibrational spectroscopic tool to study surfaces and interfaces. It is highly surface-specific and sensitive in media with inversion symmetry, and therefore has found many unique applications in areas that have not been well explored. We discuss here a few examples including liquids and polymers. We show that the observed surface vibrational spectra allow us to obtain information about surface structures of liquids and polymers. While such information is often qualitative, it is possible in some better prepared cases to deduce quantitative details about molecular orientation and alignment at the surface.

Abstract:

Infrared-visible sum-frequency generation has been developed into a powerful vibrational spectroscopic tool to study surfaces and interfaces. It is highly surface-specific and sensitive in media with inversion symmetry, and therefore has found many unique applications in areas that have not been well explored. We discuss here a few examples including liquids and polymers. We show that the observed surface vibrational spectra allow us to obtain information about surface structures of liquids and polymers. While such information is often qualitative, it is possible in some better prepared cases to deduce quantitative details about molecular orientation and alignment at the surface.

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