Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 19 November 1993:
Vol. 262. no. 5137, pp. 1244 - 1247
DOI: 10.1126/science.262.5137.1244
Prev | Table of Contents | Next

Articles

Real-Time Observation of the Vibration of a Single Adsorbed Molecule

Fumiya Watanabe 1, Gary M. McClelland 1, and Harry Heinzelmann 1

1 IBM Research Division, Almaden Research Center, San Jose, CA 95120

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 1010 and 20 x 1010 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.

Submitted on July 16, 1993
Accepted on September 24, 1993

ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)