Real-Time Observation of the Vibration of a Single Adsorbed Molecule
- 19 November 1993
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 262 (5137) , 1244-1247
- https://doi.org/10.1126/science.262.5137.1244
Abstract
The newly developed femtosecond field emission camera was used to observe the time dependence of field emission through a single copper phthalocyanine molecule adsorbed on a tungsten tip. In many of the individual 212-picosecond-long recordings, the field emission was found to oscillate with a frequency between 5 x 10(10) and 20 x 10(10) hertz. The oscillations, which were not observed from a bare tip, are believed to arise from the vibration of a single molecule with respect to the surface. Numerical simulations confirmed the statistical significance of the data.Keywords
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