Stability and structure of nanometer-thin perfluoropolyether films using molecular simulations

Tribology Letters

Volumn 54, Issue 2, 2014, Pages 119-127

  Yi, Taeil ^a   Ramasamy, Uma Shantini ^b   Lichter, Seth ^a   Martini, Ashlie ^b  

^a Northwestern University   (United States)

^b Merced   (United States)

Author keywords

Fluorocarbons; Magnetic data storage; Nanotribology

Indexed keywords

FLUOROCARBONS; MAGNETIC STORAGE; MOLECULAR DYNAMICS; NANOTRIBOLOGY; THIN FILMS;

DISJOINING PRESSURES; FILM STABILITY; INTERACTION ENERGIES; MOLECULAR DYNAMICS SIMULATIONS; MOLECULAR SIMULATIONS; MOVING INTERFACE; PERFLUOROPOLYETHER FILMS; PERFLUOROPOLYETHERS;

STABILITY;

EID: 84903710304     PISSN: 10238883     EISSN: None     Source Type: Journal    
DOI: 10.1007/s11249-014-0316-1     Document Type: Article

References (36)

1. Bhushan, B., Goldade, A.V.: Kelvin probe microscopy measurements of surface potential change under wear at low loads. Wear 244, 104-117 (2000)
2. Guo, J.-G., Zhou, L.-J., Zhao, Y.-P.: Instability analysis of tor-sional mems/nems actuators under capillary force. J. Colloid Interface Sci. 331(2), 458-462 (2009)
3. Guo, X.C., Marchon, B., Wang, R.H., Mate, C.M., Dai, Q., Waltman, R.J., Deng, H., Pocker, D., Xiao, Q.F., Saito, Y., Ohtani, T.: A multidentate lubricant for use in hard disk drives at sub-nanometer thickness. J. Appl. Phys. 111, 024503 (2012)
4. Liu, H., Bhushan, B.: Nanotribological characterization of molecularly thick lubricant films for applications to MEMS/NEMS by afm. Ultramicroscopy 97(14), 321-340 (2003)
5. Liu, Y., Sinha, S.K.: Wear performances of uhmwpe composites with nacre and cnts, and pfpe coatings for bio-medical applications. Wear 300, 44-54 (2013)
6. Marchon, B.: Developments in Data Storage: Materials Perspective, 1st edn. Wiley, New York (2012)
7. Chandross, M., Grest, G.S., Stevens, M.J.: Friction between alkylsilane monolayers: molecular simulation of ordered mono-layers. Langmuir 18, 8392-8399 (2002)
8. Mikulski, P.T., Herman, L.A., Harrison, J.A.: Odd and even model self-assembled monolayers: links between friction and structure. Langmuir 26, 12197-12206 (2005)
9. Ramin, L., Jabbarzadeh, A.: Effect of load on structural and frictional properties of alkanethiol self-assembled monolayers on gold: some OddEven effects. Langmuir 28, 4102-4112 (2012)
10. Waltman, R.J., Tyndall, G.W., Pacansky, J.: Computer-modeling study of the interactions of zdol with amorphous carbon surfaces. Langmuir 15, 6470-6483 (1999)
11. Chung, P.S., Park, H., Jhon, M.S.: The static and dynamic responses of binary mixture perfluoropolyether lubricant films molecular structural effects. IEEE Trans. Magn. 45, 3644-3647 (2009)
12. Koike, A.: Molecular dynamics study of tribological behavior of confined branched and linear perfluoropolyethers. J. Phys. Chem. B 103, 4578-4589 (1999)
13. Li, H.-C., MCcCabe, C., Cui, S.T., Cummings, P.T., Cochran, H.D.: On the development of a general force field for the molecular simulation of perfluoroethers. Mol. Phys. 101, 2157-2169 (2003)
14. Smith, R.L., Jhon, Y.I., Biegler, L.T., Jhon, M.S.: An atomistic study of perfluoropolyether lubricant thermal stability in heat assisted magnetic recording. IEEE Trans. Magn. 49, 3748-3751 (2013)
15. Jiang, B., Keffer, D.J., Edwards, B.J.: Estimation and analysis of the rheological properties of a perfluoropolyether through molecular dynamics simulation. J. Fluorine Chem. 127, 787-795 (2006)
16. Fukuda, M., Zhang, H., Ishiguro, T., Fukuzawa, K., Itoh, S.: Adhesion properties of nanometer-thick perfluoropolyether films confined between solid surfaces: a coarse-grained molecular dynamics study. Tribol. Lett. 51, 479-487 (2013)
17. Li, Y., Wong, C.H., Li, B., Yu, S., Hua, W., Zhou, W.: Lubricant evolution and depletion under laser heating: a molecular dynamics study. Soft Matter 8, 5649-5657 (2012)
18. Ogata, S., Zhang, H., Fukuzawa, K., Mitsuya, Y.: Quantification of the surface morphology of lubricant films with polar end groups using molecular dynamics simulations: periodic changes in morphology depending on film thickness. J. Tribol. 130, 022301 (2008)
19. Derjaguin, B.: Range of action of surface forces. Nature 138, 330-331 (1936)
20. Bowles, A.P., Hsia, Y.-T., Jones, P.M., White, L.R., Schneider, J.W.: Quasi-equilibrium afm measurement of disjoining pressure in lubricant nanofilms II: effect of substrate materials. Langmuir 25, 2101-2106 (2009)
21. Izumisawa, S., Jhon, M.S.: Calculation of disjoining pressure for lubricant films via molecular simulation. IEEE Trans. Magn. 42, 2543-2545 (2006)
22. Wu, Q., Wong, H.: A slope-dependent disjoining pressure for non-zero contact angles. J. Fluid Mech. 506, 157-185 (2004)
23. Yi, T., Wong, H.: Theory of slope-dependent disjoining pressure with application to Lennard Jones liquid films. J. Colloid Interface Sci. 313, 579-591 (2007)
24. Mathew Mate, C.: Taking a fresh look at disjoining pressure of lubricants at slider-disk interfaces. IEEE Trans. Magn. 47, 124-130 (2011)
25. Hsia, Y.T., Jones, P., White, L.R.: Can contact-angle measurements determine the disjoining pressure in liquid nanofilms on rigid substrates? Langmuir 20, 10073-10079 (2004)
26. Butt, H.J., Graf, K., Kappl, M.: Physics and Chemistry of Interfaces. Wiley-VCH, New York (2006)
27. Israelachvili, J.N.: Intermolecular and Surface Forces, Revised Third Edition. Academic Press, London (2011)
28. Reinhardt, W.P., Miller, M.A., Amon, L.M.: Why is it so difficult to simulate entropies, free energies, and their differences. Acc. Chem. Res. 34, 607-614 (2001)
29. Straatsma, T.P., McCammon, J.A.: Computational alchemy. Annu. Rev. Phys. Chem. 43, 407-435 (1992)
30. McQuarrie, D.A.: Statistical Mechanics. University Science Books, Mill Valley (2000)
31. Kremer, K., Grest, G.S.: Dynamics of entangled linear polymer melts: a molecular-dynamics simulation. J. Chem. Phys. 92, 5057-5086 (1990)
32. Guo, Q., Izumisawa, S., Philips, D.M., Jhon, M.S.: Surface morphology and molecular conformation for ultrathin lubricant films with functional end groups. J. Appl. Phys. 93, 8707-8709 (2003)
33. Plimpton, S.: Fast parallel algorithms for short-range molecular dynamics. J. Comput. Phys. 117, 1-19 (1995)
34. Humphrey, W., Dalke, A., Schulten, K.: VMD-visual molecular dynamics. J. Mol. Graph. 14, 33-38 (1996)
35. Mate, C.M., Toney, M.F., Leach, K.A.: Roughness of thin per-fluoropolyether lubricant films: Influence on disk drive technology. IEEE Trans. Magn. 37(4), 1821-1823 (2001)
36. Oron, A., Davis, S.H., Bankoff, S.G.: Long-scale evolution of thin liquid films. Rev. Mod. Phys. 69, 931-980 (1997)