Material Science: High frictional anisotropy of periodic and aperiodic directions on a quasicrystal surface

Jeong Young Park; D. F. Ogletree; M. Salmeron; R. A. Ribeiro; P. C. Canfield; C. J. Jenks; P. A. Thiel

doi:10.1126/science.1113239

Material Science: High frictional anisotropy of periodic and aperiodic directions on a quasicrystal surface

Jeong Young Park, D. F. Ogletree, M. Salmeron, R. A. Ribeiro, P. C. Canfield, C. J. Jenks, P. A. Thiel

Research output: Contribution to journal › Article › peer-review

183 Scopus citations

Abstract

Strong friction anisotropy is found when the twofold surface of an atomically clean aluminum-nickel-cobalt quasicrystal slides against a thiol-passivated titanium-nitride tip. Friction along the aperiodic direction is one-eighth as much as that along the periodic direction. This anisotropy, which is about three times as large as the highest value observed in anisotropic crystalline surfaces, disappears after the surface is oxidized in air. These results reveal a strong connection between interface atomic structure and the mechanisms by which energy is dissipated, which likely include electronic or phononic contributions, or both.

Original language	English
Pages (from-to)	1354-1356
Number of pages	3
Journal	Science
Volume	309
Issue number	5739
DOIs	https://doi.org/10.1126/science.1113239
State	Published - Aug 26 2005
Externally published	Yes

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title = "Material Science: High frictional anisotropy of periodic and aperiodic directions on a quasicrystal surface",

abstract = "Strong friction anisotropy is found when the twofold surface of an atomically clean aluminum-nickel-cobalt quasicrystal slides against a thiol-passivated titanium-nitride tip. Friction along the aperiodic direction is one-eighth as much as that along the periodic direction. This anisotropy, which is about three times as large as the highest value observed in anisotropic crystalline surfaces, disappears after the surface is oxidized in air. These results reveal a strong connection between interface atomic structure and the mechanisms by which energy is dissipated, which likely include electronic or phononic contributions, or both.",

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T2 - High frictional anisotropy of periodic and aperiodic directions on a quasicrystal surface

AU - Park, Jeong Young

AU - Ogletree, D. F.

AU - Salmeron, M.

AU - Ribeiro, R. A.

AU - Canfield, P. C.

AU - Jenks, C. J.

AU - Thiel, P. A.

PY - 2005/8/26

Y1 - 2005/8/26

N2 - Strong friction anisotropy is found when the twofold surface of an atomically clean aluminum-nickel-cobalt quasicrystal slides against a thiol-passivated titanium-nitride tip. Friction along the aperiodic direction is one-eighth as much as that along the periodic direction. This anisotropy, which is about three times as large as the highest value observed in anisotropic crystalline surfaces, disappears after the surface is oxidized in air. These results reveal a strong connection between interface atomic structure and the mechanisms by which energy is dissipated, which likely include electronic or phononic contributions, or both.

AB - Strong friction anisotropy is found when the twofold surface of an atomically clean aluminum-nickel-cobalt quasicrystal slides against a thiol-passivated titanium-nitride tip. Friction along the aperiodic direction is one-eighth as much as that along the periodic direction. This anisotropy, which is about three times as large as the highest value observed in anisotropic crystalline surfaces, disappears after the surface is oxidized in air. These results reveal a strong connection between interface atomic structure and the mechanisms by which energy is dissipated, which likely include electronic or phononic contributions, or both.

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VL - 309

SP - 1354

EP - 1356

JO - Science

JF - Science

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ER -

Material Science: High frictional anisotropy of periodic and aperiodic directions on a quasicrystal surface

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