My current research focus is in understanding functional mechanisms of lubricant additives and additive interactions in low viscosity base stock, using in-situ atomic force microscopy (AFM). Specifically, I am using single-asperity and colloidal probe AFM to elucidate the role of mechanochemistry in driving sliding-induced growth of surface tribofilms and the evolution of interfacial friction. These studies are aimed at improving our basic scientific understanding of lubricant additive mechanisms in order to enable development of advanced materials for surface coatings, lubricant additives as well as lubricant base stock.
My broader research interests include:
- Novel lubricant additives, basestock, additive interactions and surface coatings
- Multi-scale interfacial science and mechanics of materials
- Development of novel AFM-based additive nanomanufacturing methods
- Multifunctional Polymer and Metal-Matrix Nanocomposites for extreme environments
- Nanoscale tribology and mechanics of lamellar (2D) materials
- Machine design, control and instrumentation for microscale and in-situ tribometry