Molecular dynamics study of dynamic contact and separation between tip and disk surface |
| |
| Affiliation: | 1. Lebanese German University (LGU), Sahel-Alma, Jounieh, Lebanon;2. LSPM–CNRS, Université Sorbonne Paris Nord, 93430, Villetaneuse, France;3. Former DR1-CNRS Senior Researcher at the University of Bordeaux, ICMCB-CNRS, France;1. Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China;2. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore, Singapore;1. School of Physical Science and Information Technology, Liaocheng University, Liaocheng 252000, China;2. Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Liaocheng 252000, China;3. Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang, Sichuan 621900, China;4. School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;5. College of Science, Henan University of Technology, Zhengzhou 450001, China;6. School of Mechanical and Automotive Engineering, Liaocheng University, Liaocheng 252000, China;7. Department of Physics, Lanzhou City University, Lanzhou 730070, China;8. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;1. State Key Discipline Laboratory of Wide BandGap Semiconductor Technology, School of Microelectronics, Xidian University, Xi''an 710071, PR China;2. School of Physics and Optoelectronic Engineering, Xidian University, Xi''an 710071, PR China;3. College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, PR China;4. Department of Physics and information technology, Baoji University of Arts and Science, Baoji 721016, PR China;5. School of Materials Science and Engineering, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, PR China |
| |
| Abstract: | Molecular dynamics simulations were performed to study contact and separation between tip and lubricants on disk surface. The effects of contact indentation depth, indentation velocity, separation velocity, adhesive energy, lubricant molecular structure and lubricating film thickness on interacting force were analyzed. The results indicate that the tip force exerted by lubricants is velocity-dependent. The tip force increases with increasing indentation velocity and separation force reduces with increasing separation velocity. The damping of branched molecule and thick lubricating film is high. The high adhesive energy of tip material can produce high separation force which reduces bouncing vibration. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
