Harman Khare

 
20170909_232800-2
hkhare@seas.upenn.edu

112 Towne Building
220 S. 33rd St., Philadelphia PA 19104

Personal website | Google Scholar | CV

 

Research Interests

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

 

Education

Ph. D. in Mechanical Engineering, University of Delaware (2014)

Dissertation Title: The coupled effects of environmental composition, temperature and contact size-scale on the tribology of Molybdenum Disulfide

Doctoral Advisor: Dr. David Burris

B. E. (Hons.) in Mechanical Engineering, Panjab University (2008)

 

Professional Experience

  • Manager of Research Projects (March 2016 – present)
    University of Pennsylvania, Philadelphia PA
  • Postdoctoral Researcher (June 2014 – February 2016)
    University of Pennsylvania, Philadelphia PA

Awards and Honors 

  1. Marshal B. Peterson Award, American Society of Mechanical Engineers, 2016
  2. Poster Award, Gordon Research Seminar on Tribology, 2016
  3. Early Career Researcher Award, Society of Tribologists & Lubrication Engineers, 2015
  4. Poster award, Gordon Research Seminar on Tribology, 2014
  5. Professional Development Award, University of Delaware, 2014, 2012
  6. Graduate Scholarship, National Association for Surface Finishing, 2014
  7. Scholarship Award, Society of Tribologists & Lubrication Engineers Philadelphia and New Jersey Section, 2013
  8. Young Tribologist Award, Society of Tribologists & Lubrication Engineers, 2013
  9. Graduate Achievement Award, University of Delaware Dept. of Mech. Engineering, 2013
  10. University Graduate Fellow, University of Delaware, 2012
  11. Best poster award, Society of Tribologists & Lubrication Engineers Annual Meeting, 2012
  12. Poster award, International Joint Tribology Conference, 2011
  13. Best research presentation, Mechanical Engineering Graduate Research Symposium, 2010

 

Peer-Reviewed Publications 

  1. Interrelated effects of temperature and environment on wear and tribochemistry of an ultralow wear PTFE composite [link]
    H. S. Khare, A.C. Moore, D. Haidar, L. Gong, J.Ye, J.F. Rabolt, D. L. Burris, J. of Physical Chemistry C (2015)
  2. Quantitative characterization of solid lubricant transfer film quality [link]
    J. Ye, H.S Khare, D.L. Burris, Wear, 316, 133-143 (2014)
  3. Surface and subsurface contributions of oxidation and moisture to room temperature friction of molybdenum disulfide [link]
    H.S Khare, D.L. Burris, Tribology Letters, 53(1), 329-336 (2014)
  4. The effects of environmental water and oxygen on the temperature-dependent friction of sputtered molybdenum disulfide [link]
    H.S. Khare, D.L. Burris, Tribology Letters, 52(3), 485-493 (2013)
  5. The extended wedge method: Atomic force microscope friction calibration for improved tolerance to instrument misalignments, tip offset, and blunt probes [link]
    H.S. Khare, D.L. Burris, Rev. of Sci. Instruments, 84, 055108 (2013
  6. Transfer film evolution and its role in promoting ultra-low wear of a PTFE nanocomposite [link]
    J. Ye, H.S. Khare and D.L. Burris, Wear, 297, 1095-1102 (2013
  7. A quantitative method for measuring nanocomposite dispersion [link]
    H.S. Khare, D.L. Burris, Polymer, 51, 719-729 (2010) 

 

Invited Talks               

  1. Fundamental studies of molybdenum disulfide tribology
    H.S. Khare, D.L. Burris, STLE Philadelphia Section Meeting, Oreland, PA, 2014
  2. Scanning Probe Microscopy (SPM) applications in tribology
    H.S. Khare, D.L. Burris, Bruker Nano Surface Metrology Workshop, UD Center for Composite Materials, Newark, DE, 2012
  3. Applications of 3D optical microscopy in tribology research
    H.S. Khare, J. Ye, F. Feng, D.L. Burris, Bruker Nano Surface Metrology Workshop, UD Center for Composite Materials, Newark, DE, 2012