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- Changgu Lee
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
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- Qunyang Li
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA.
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- William Kalb
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
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- Xin-Zhou Liu
- Department of Physics, Leiden University, 2300 RA Leiden, Netherlands.
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- Helmuth Berger
- Institute of Physics of Condensed Matter, Ecole Polytechnique Fédérale de Lausanne,
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- Robert W. Carpick
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA.
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- James Hone
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
書誌事項
- 公開日
- 2010-04-02
- DOI
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- 10.1126/science.1184167
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:title>Thin Friction</jats:title><jats:p>The rubbing motion between two surfaces is always hindered by friction, which is caused by continuous contacting and attraction between the surfaces. These interactions may only occur over a distance of a few nanometers, but what happens when the interacting materials are only that thick?<jats:bold>Lee<jats:italic>et al.</jats:italic></jats:bold>(p.<jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="76" related-article-type="in-this-issue" vol="328" xlink:href="10.1126/science.1184167">76</jats:related-article>; see the Perspective by<jats:bold><jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="5974" page="52" related-article-type="in-this-issue" vol="328" xlink:href="10.1126/science.1188086"><jats:bold>Müser and Shakhvorostov</jats:bold></jats:related-article></jats:bold>) explored the frictional properties of a silicon tip in contact with four atomically thin quasi–two dimensional materials with different electrical properties. For all the materials, the friction was seen to increase as the thickness of the film decreased, both for flakes supported by substrates and for regions placed above holes that formed freely suspended membranes. Placing graphene on mica, to which it strongly adheres, suppressed this trend. For these thin, weakly adhered films, out-of-plane buckling is likely to dominate the frictional response, which leads to this universal behavior.</jats:p>
収録刊行物
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- Science
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Science 328 (5974), 76-80, 2010-04-02
American Association for the Advancement of Science (AAAS)