DOI: 10.1126/science.1147550. Nanoscale Friction Varied by Isotopic Shifting of Surface Vibrational Frequencies

Nanoscale Friction Varied by Isotopic Shifting of Surface Vibrational Frequencies

10.1126/science.1147550

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Friction converts kinetic energy at sliding interfaces into lattice vibrations, but the detailed mechanisms of this process remain unresolved. Atomic force microscopy measurements reveal that changing the mass of the terminating atoms on a surface, and thus their vibrational frequencies, affects nanoscale friction substantially. We compared hydrogen- and deuterium-terminated single-crystal diamond and silicon surfaces, and in all cases the hydrogenated surface exhibited higher friction. This result implies that the lower natural frequency of chemisorbed deuterium reduces the rate at which the tip's kinetic energy is dissipated. This discovery is consistent with a model describing energy transfer to adsorbates from a moving surface.

Bibliography

Cannara, R. J., Brukman, M. J., Cimatu, K., Sumant, A. V., Baldelli, S., & Carpick, R. W. (2007). Nanoscale Friction Varied by Isotopic Shifting of Surface Vibrational Frequencies. Science, 318(5851), 780â783.

Authors 6

Rachel J. Cannara (first)
Matthew J. Brukman (additional)
Katherine Cimatu (additional)
Anirudha V. Sumant (additional)
Steven Baldelli (additional)
Robert W. Carpick (additional)

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We thank J. Butler and J. Yang for loaning and polishing the (001)-oriented single-crystal diamonds and for helpful advice regarding H termination. J. Harris supplied (111) single-crystal diamonds used as references in the SFG measurements. We also thank L. Bruch for extensive discussions and B. Gotsmann for a helpful reading of this manuscript. Supported by the NSF CAREER Award no. CMS 0134571; an NSF Graduate Research Fellowship; and the Air Force Office of Scientific Research grant FA9550-05-1-0204.

Dates

Type	When
Created	17 years, 9 months ago (Nov. 1, 2007, 5:08 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 2:59 a.m.)
Indexed	3 months ago (May 20, 2025, 4:24 p.m.)
Issued	17 years, 9 months ago (Nov. 2, 2007)
Published	17 years, 9 months ago (Nov. 2, 2007)
Published Print	17 years, 9 months ago (Nov. 2, 2007)

Funders 0

None

BibTeX

@article{Cannara_2007, title={Nanoscale Friction Varied by Isotopic Shifting of Surface Vibrational Frequencies}, volume={318}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1147550}, DOI={10.1126/science.1147550}, number={5851}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Cannara, Rachel J. and Brukman, Matthew J. and Cimatu, Katherine and Sumant, Anirudha V. and Baldelli, Steven and Carpick, Robert W.}, year={2007}, month=nov, pages={780–783} }

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