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| Title: Interface slip and the buildup of hydrodynamic pressure in nanoscale bearings |
| Authors: |
| Author Full Names: Zhang, Yue; Chen, Yunfei; Bi, Kedong; Yang, Juekuan; Ni, Zhonghua; Wang, Yujuan |
| Source: PHYSICA B-CONDENSED MATTER 404 (2): 231-234 FEB 28 2009 |
| Language: English |
| Document Type: Article |
| Author Keywords: Nanoscale bearing; Viscosity; Slip length |
| KeyWords Plus: MOLECULAR-DYNAMICS SIMULATION; SHEAR-FLOW; LUBRICANTS; SURFACES; FLUID |
| Abstract: A new type of hydrodynamic bearing is presented. Instead of physically forming a wedged space by two plates, the bearing consists of two parallel plates, with regions of different wettability on one of the surfaces. With the introduction of such a wettability-patterned surface, the hydrodynamic pressure can be built up because the local slip length over different regions in the bearing is different and results in similar velocity profiles to that in a traditional wedged bearing. Molecular dynamics simulation results indicate that the hydrodynamic pressure is proportional to the shear velocity. However, as the shear velocity exceeds a critical value, the slip length becomes infinite and the hydrodynamic bearing loses its function. (C) 2008 Elsevier B.V. All rights reserved. |
| Reprint Address: Chen, YF, Southeast Univ, China Educ Minist, Key Lab MEMS, Jiangsu Key Lab Design & Manufacture Micronano Bi, Nanjing 210096, Peoples R China. |
| Research Institution addresses: [Zhang, Yue; Chen, Yunfei; Bi, Kedong; Yang, Juekuan; Ni, Zhonghua; Wang, Yujuan] Southeast Univ, China Educ Minist, Key Lab MEMS, Jiangsu Key Lab Design & Manufacture Micronano Bi, Nanjing 210096, Peoples R China |
| E-mail Address: yunfeichen@seu.edu.cn |
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| Cited Reference Count: 18 |
| Times Cited: 0 |
| Publisher: ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| Subject Category: Physics, Condensed Matter |
| ISSN: 0921-4526 |
| DOI: 10.1016/j.physb.2008.10.046 |
| IDS Number: 420GE |
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