Title :
Nano/micro-reological characteristics of polymeric lubricant for hard disk drive
Author :
Chung, P. ; Guo, Q. ; Jhon, M.S. ; Choi, H.J.
Author_Institution :
Dept. of Chem. Eng., Carnegie Mellon Univ., Pittsburgh, PA
Abstract :
Rheological properties of shear viscosity and dynamic moduli of perfluoropolyether (PFPE) with different molecular weights and end group functionalities were measured. Molecular simulation of non-equilibrium molecular dynamics (NEMD) was also performed to provide a molecular visualization tool to predict shear viscosity, which reveals a strong dependence on temperature and PFPE molecular architecture.
Keywords :
disc drives; hard discs; lubricants; lubrication; molecular dynamics method; molecular weight; polymers; rheology; viscosity; dynamic moduli; end group functionalities; hard disk drive; microreological property; molecular visualization tool; molecular weights; nanoreological property; nonequilibrium molecular dynamics simulation; perfiuoropolyether; polymeric lubricant; shear viscosity; Bulk storage; Hard disks; Loss measurement; Lubricants; Polymers; Predictive models; Rheology; Rotation measurement; Temperature dependence; Viscosity; Lubricant; NEMD; Nanorheology; PFPE;
Conference_Titel :
Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
978-9810-82191-3
DOI :
10.1109/APMRC.2009.4925359
