Abstract
Surface texturing of silicon substrates with nanowells can change the lubricious performance of cationic polymer lubricant (CPL), a bound-and-mobile lubricant consisting of a polydimethylsiloxane (PDMS) backbone with covalently bonded quaternary ammonium iodide cations. The filled nanowell reservoirs enhance self-healing within the contact track since they can readily provide CPL to near-by regions. However, once this initial reservoir is completely consumed and depleted, the empty nanowells interfere with long-distance lateral flow process since they act as a reservoir that needs to be filled during the flow.
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Acknowledgments
This study was supported by the National Science Foundation (Grant No. CMMI-100021). The authors gratefully acknowledge Dr. N. Chaturvedi and Dr. D. Velegol for aiding on the production of textured nanowells on silicon oxide surfaces.
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Hsiao, E., Barthel, A.J. & Kim, S.H. Effects of Nanoscale Surface Texturing on Self-Healing of Boundary Lubricant Film via Lateral Flow. Tribol Lett 44, 287 (2011). https://doi.org/10.1007/s11249-011-9847-x
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DOI: https://doi.org/10.1007/s11249-011-9847-x