Nanotribological Printing was a featured technology for the 2017 Penn Y-Prize

  Nano Letters paper on Nanotribological Printing is featured on!  Click the image to read the article!

Nano Letters paper on Nanotribological Printing is featured on! Click the image to read the article!

The Gonzaga University Tribology Research Laboratory (TRL) conducts research in the area of interfacial phenomena, mechanics and design of tribological materials, as well as the development of custom instruments for fundamental studies in multi-scale tribology. The TRL utilizes experimental techniques which include optical in-situ and ex-situ microtribometry of solid and liquid lubricant materials, and nanoscale tribometry using atomic force microscopy (AFM).

The aim of our research is to better understand the operating physical and chemical processes which drive material behavior at tribological interfaces, with the overarching goal of transforming reliability and efficiency of mechanical systems, particularly in harsh environments. A key focus of this research is on bridging nano and macro length-scales through the design of novel measurement techniques and material systems.

Areas of research at the TRL 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

Refereed Journal Articles

  1. AFM at the Macroscale: Methods to Fabricate and Calibrate Probes for Millinewton Force Measurements
    N.T. Garabedian, H.S. Khare, R.W. Carpick, D.L. Burris (in review)

  2. Nanotribological Printing: A Nanoscale Additive Manufacturing Method
    H.S. Khare, N.N. Gosvami, I. Lahouij, Z.B. Milne, J.B. McClimon, R.W. Carpick, Nano Letters (2018)

  3. Nanoscale Generation of Robust Solid Films from Liquid Dispersed Nanoparticles via In-situ Atomic Force Microscopy: Growth Kinetics and Nanomechanical Properties
    H.S. Khare, I. Lahouij, A. Jackson, G. Feng, Z. Chen, G.D. Cooper, R.W. Carpick, ACS Applied Materials & Interfaces (2018)

  4. Interrelated effects of temperature and environment on wear and tribochemistry of an ultra-low wear PTFE composite
    H.S. Khare, A.C. Moore, D. Haidar, L. Gong, J.Ye, J.F. Rabolt, D. L. Burris, Journal of Physical Chemistry C, 119, 16518-16527 (2015)

  5. Quantitative characterization of solid lubricant transfer film quality
    J. Ye, H.S. Khare, D. L. Burris, Wear, 316, 133-143 (2014)

  6. Surface and sub-surface contributions of oxidation and moisture to room temperature friction of molybdenum disulfide
    H.S. Khare, D. L. Burris, Tribology Letters, 53, 329-336 (2014)

  7. The effects of environmental water and oxygen on the temperature-dependent friction of sputtered molybdenum disulfide
    H.S. Khare, D. L. Burris, Tribology Letters, 52, 485-493 (2013)

  8. The extended wedge method: AFM friction calibration for improved error tolerance to AFM misalignment, tip-offset and blunt probes
    H.S Khare, D. L. Burris, Rev. of Sci. Instruments, 84, 055108 (2013)

  9. Transfer film evolution and its role in promoting ultra-low wear of a PTFE nanocomposite
    J. Ye, H.S. Khare, D. L. Burris, Wear, 297, 1095-1102 (2013)

  10. A Quantitative Method for Measuring Nanocomposite Dispersion
    H.S. Khare, D. L. Burris, Polymer, 51, 719-729 (2010)

Patents and Disclosures

  1. Systems and Methods for Nano-Tribological Manufacturing of Nanostructures, International Patent WO/2017/044331, 2017

  2. Nano-additives enabled advanced lubricants, International Patent WO/2016/179224, 2016

Featured Publications

  1. Methods in characterization of nano-scale friction in solid lubricants
    H.S. Khare, D.L. Burris, Tribology and Lubrication Technology, September 2012

  2. Characterization of Nanoscale Surface Films in Solid Lubricants
    H.S. Khare, D.L. Burris, Tribology and Lubrication Technology, May 2012

Conference Proceedings
          A Quantitative Metric for Nanocomposite Dispersion Analysis
          H.S. Khare, D.L. Burris, Proc. STLE Annual Meeting & Exhibition (2010)