Singh, R. Arvind Na, Kyounghwan Yi, Jin Woo Lee, Kwang-Ryeol Yoon, Eui-Sung 2024-01-20T17:33:36Z 2024-01-20T17:33:36Z 2021-09-02 2011-02-01 0169-4332 https://pubs.kist.re.kr/handle/201004/130650 With the invention of miniaturized devices like micro-electro-mechanical systems (MEMS), tribological studies at micro/nano-scale have gained importance. These studies are directed towards understanding the interactions between surfaces at micro/nano-scales, under relative motion. In MEMS devices, the critical forces, namely adhesion and friction restrict the smooth operation of the elements that are in relative motion. These miniaturized devices are traditionally made from silicon (Si), whose tribological properties are not good. In this paper, we present a short investigation of nano-and micro-tribological properties of diamond-like carbon (DLC) nano-dot surfaces. The investigation was undertaken to evaluate the potential of these surfaces for their possible application to the miniaturized devices. The tribological evaluation of the DLC nano-dot surfaces was done in comparison with bare Si (1 0 0) surfaces and DLC coated silicon surfaces. A commercial atomic force microscope (AFM) was used to measure adhesion and friction properties of the test materials at the nano-scale, whereas a custom-built micro-tribotester was used to measure their micro-friction property. Results showed that the DLC nano-dot surfaces exhibited superior tribological properties with the lowest values of adhesion force, and friction force both at the nano-and micro-scales, when compared to the bare Si (1 0 0) surfaces and DLC coated silicon surfaces. In addition, the DLC nano-dot surfaces showed no observable wear at the micro-scale, unlike the other two test materials. The superior tribological performance of the DLC nano-dot surfaces is attributed to their hydrophobic nature and the reduced area of contact projected by them. (C) 2010 Elsevier B. V. All rights reserved. English ELSEVIER FRICTION BEHAVIOR ADHESION MONOLAYERS CONTACT FILMS WEAR DLC nano-dot surfaces for tribological applications in MEMS devices Article 10.1016/j.apsusc.2010.10.131 1 APPLIED SURFACE SCIENCE, v.257, no.8, pp.3153 - 3157 APPLIED SURFACE SCIENCE 257 8 3153 3157 scie scopus 000286179800001 2-s2.0-78651369896 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article FRICTION BEHAVIOR ADHESION MONOLAYERS CONTACT FILMS WEAR Nano Micro Adhesion Friction Wear Tribology Diamond-like carbon