Journal Papers

Peer Reviewed Journal Articles




  1. “Ultralow Wear of Gallium Nitride”
    G. Zeng, C. K. Tan, N. Tansu and B. A. Krick, Applied Physics Letters 109 (5), 051602
    DOI: 10.1063/1.4960375

  2. “Ultralow Wear Perfluoroalkoxy (PFA) and Alumina Composites”
    Wear Volumes 362–363, 15 September 2016, Pages 179–185.
    DOI: 10.1016/j.wear.2016.06.003

  3. “Introducing a level-set based shape and topology optimization method for the wear of composite materials with geometric constraints”
    F. Feppon, G. Michailidis, M. A. Sidebottom, G. Allaire, B. A. Krick, N. Vermaak, Structural and Multidisciplinary Optimization, 1-22
    DOI: 10.1007/s00158-016-1512-4

  4. "Paleo-tribology: Development of wear measurement techniques and a three-dimensional model revealing how grinding dentitions self-wear to enable functionality" G. M. Erickson, M. A. Sidebottom§, J. F. Curry§, D. I. Kay, S. Kuhn-Hendricks, M. A. Norell, W. G. Sawyer, and B. A. Krick, Surface Topography: Metrology and Properties. 4, 024001 (2016).
    DOI: 10.1088/2051-672X/4/2/024001

  5.  “Ultralow Wear Fluoropolymer Composites: Nanoscale Functionality from Microscale Fillers”
    B.A. Krick, A. A. Pitenis, K. L. Harris, C. P. Junk, W. G. Sawyer, S. C. Brown, H. D. Rosenfeld, D. J. Kasprzak, R. S. Johnson, C. D. Chan and G. S. Blackman,  Tribology International  95, (2016) 245-255
    DOI: 10.1016/j.triboint.2015.10.002

  6. “Efficient steady-state computation for wear of multi-material composites”
    F Feppon§, MA Sidebottom§, G Michailidis, BA Krick and N Vermaak, J. Tribol 138(3), 031602
    DOI: 10.1115/1.4031993

  7. “Lubricity from Polymer Entangled Networks on Hydrogels”
    AA  Pitenis, JM Uruena, RM Nixon, T Bhattacharjee, BA Krick, AC Dunn, TE Angelini and WG Sawyer, J. Tribol 138(4), 042102
    DOI: 10.1115/1.4032889



  9. "Modeling wear of multi-material composite wear surfaces"
    MA Sidebottom;, F Feppon;, N Vermaak and BA Krick;, J. Tribol 138(4), 041605
    DOI: 10.1115/1.4032823

  10. “Wear Debris Mobility, Aligned Surface Roughness, and the Low Wear Behavior of Filled Polytetrafluoroethylene”
    KL Harris, JF Curry§, AA Pitenis, KG Rowe, MA Sidebottom§, WG Sawyer and BA Krick . Tribology Letters 60 (2015) (1), 1-8
    DOI: 10.1007/s11249-015-0581-7

  11. “Wear biomechanics in the slicing dentition of the giant horned dinosaur Triceratops
    G. M. Erickson, M. A. Sidebottom§, D. I. Kay, K. T. Turner, N. Ip, M. A. Norell, W. G. Sawyer and B. A. Krick , Science Advances 1 (5), e1500055 (2015).
    DOI: 10.1007/s11249-015-0500-y

  12. “PTFE Tribology and the Role of Mechanochemistry in the Development of Protective Surface Films”
    K. L. Harris, A. A. Pitenis, W. G. Sawyer, B. A. Krick, G. S. Blackman, D. J. Kasprzak and C. P. Junk, Macromolecules (2015) 48 (11), pp 3739–3745
    DOI: 10.1021/acs.macromol.5b00452

  13.  “Transducer Misalignment and Contact Pressure Distributions as Error Sources in Friction Measurement on Small-Diameter Pin-on-Disk Experiments”
    M. A. Sidebottom§ and B. A. Krick , Tribology Letters 58 (2015) (2), 1-6
    DOI: 10.1007/s11249-015-0500-y

  14. “Ultralow wear PTFE and Alumina Composites: It’s All About Tribochemistry”
    A. A. Pitenis, K. L. Harris, C. P. Junk, G. S. Blackman, W. G. Sawyer and B. A. Krick , Tribology Letters 57 (2015) (2), 1-8
    DOI: 10.1007/s11249-014-0445-6



  16. "Polymer Fluctuation Lubrication in Hydrogel Gemini Interfaces"
    A. A. Pitenis, J. M. Uruena, K. D. Schulze, R. M. Nixon, A. C. Dunn, B. A. Krick, W. G. Sawyer and T. E. Angelini, Soft matter. 10, 8955-8962 (2014).
    DOI: 10.1039/C4SM01728E

  17. "Mechanistic Studies in Friction and Wear of Bulk Materials"
    W. G. Sawyer, N. Argibay, D. L. Burris and B. A. Krick, Annual Review of Materials Research 44 (2014) 395-427.
    DOI: 10.1146/annurev-matsci-070813-113533

  18. "Tribofilm Formation and Run-In Behavior in Ultra-Low Wearing Polytetrafluoroethylene (PTFE) and Alumina Nanocomposites"
    B. A. Krick , J. J. Ewin and E. J. McCumiskey, Tribology Transactions 57 (2014) 1058-1065
    DOI: 10.1080/10402004.2014.933934

  19. “Evolution in Surfaces: Interaction of Topography with Contact Pressure During Wear of Composites Including Dinosaur Dentition”,
    K. G. Rowe, G. M. Erickson, W. G. Sawyer and B. A. Krick, Tribology Letters (2014) [pdf version]

  20. “In Vacuo Tribological Behavior of Polytetrafluoroethylene (PTFE) and Alumina Nanocomposites: The Importance of Water for Ultralow Wear”,
    A. A. Pitenis, J. J. Ewin, K. .L. Harris, W. G. Sawyer and B. A. Krick, Tribology Letters (2013) [pdf version]


  22. “Static or breakloose friction for lubricated contacts: role of surface roughness and dewetting”,
    B. Lorenz, B. A. Krick, N. Rodriguez, W. G. Sawyer, P. Mangiagalli and B. N. J. Persson, Journal of Physics: Condensed Matter 25 (2013)[pdf version]
    DOI: 10.1088/0953-8984/25/44/445013

  23. “Adhesion: Role of Bulk Viscoelasticity and Surface Roughness”,
    B. Lorenz, B. A. Krick, N. Mulakaluri, M. Smolyakova, B. N. J. Persson and W. G. Sawyer, Journal of Physics: Condensed Matter 25 (2013) [pdf version]

  24. “In Situ Thermal Measurements of Sliding Contacts”
    K. G. Rowe, A. I. Bennett, B. A. Krick and W. G. Sawyer, Accepted pending revisions to Tribology International [pdf version]
    DOI: 10.1016/j.triboint.2013.02.028

  25. “Plasmonic Diagnostics for Tribology: In situ Observations using Surface Plasmon Resonance in Combination with Surface Enhanced Raman Spectroscopy”,
    B. A. Krick, D. W. Hahn, and W. G. Sawyer, Tribology Letters [pdf version]
    DOI 10.1007/s11249-012-0048-z


  27. “Complex Dental Structure and Wear Biomechanics in Hadrosaurid Dinosaurs”
    G. M. Erickson, B. A. Krick, M. Hamilton, G. R. Bourne, M. A. Norell, E. Lilleodden and W. G. Sawyer, Science Vol. 338 no. 6103 (2012) 98-101. [pdf version]
    DOI: 10.1126/science.1224495

  28. “Environmental Dependence of Ultra-low Wear Behavior of Polytetrafluoroethylene (PTFE) and Alumina Composites Suggests Tribochemical Mechanisms”,
    B. A. Krick, J. J. Ewin, G. S. Blackman, C. P. Junk and W. G. Sawyer, Tribology International 51 (2012) 42-46 [pdf version]

  29. “Elastic Contact Mechanics: Percolation of the Contact Area and Fluid Squeeze-out”,
    B. N. J. Persson, N. Prodanov, B. A. Krick, N. Rodriguez, N. Mulakaluri, W. G. Sawyer and P. Mangiagalli, Eur. Phys. J. E 35 (2012) 5 [pdf version]
    DOI: 10.1140/epje/i2012-12005-2

  30. “Optical In Situ Micro Tribometer for Analysis of Real Contact Area for Contact Mechanics, Adhesion, and Sliding Experiments”,
    B. A. Krick, J. R. Vail, B. N. J. Persson, and W. G. Sawyer, Tribology Letters 45 (2011) 185-194. [pdf version]
    DOI: 10.1007/s11249-011-9870-y


  32. “Environmental Effects on the Tribology and Microstructure of MoS2–Sb2O3–C Films”,
    G. J. Dudder, X. Zhao, B.A. Krick, W. G. Sawyer, and S. S. Perry, Tribology Letters 42 (2011) 202-213 [pdf version]
    DOI: 10.1007/s11249-011-9764-z

  33. “Uncertainty in Pin-on-Disk Wear Volume Measurements Using Surface Scanning Techniques”,
    R. S. Colbert, B. A. Krick, A. C. Dunn, J. R. Vail, N. Argibay and W. G. Sawyer, Tribology Letters 42 (2011) 129-131 [pdf version]
    DOI: 10.1007/s11249-010-9744-8

  34. “Polytetrafluoroethylene (PTFE) Fiber Reinforced Polyetheretherketone (PEEK) Composites”,
    J. R. Vail, B. A. Krick, K. R. Marchman and W. G. Sawyer, Wear 270 (2011) 737–741 [pdf version]

  35. “Space Tribometers: Design for Exposed Experiments on Orbit”,
    B. A. Krick and W. G. Sawyer, Tribology Letters 41 (2010) 303-311 [pdf version]
    DOI: 10.1007/s11249-010-9689-y


  37. “High Temperature Vapor Phase Lubrication Using Carbonaceous Gases”,
    N. Argibay, J. H. Keith, B. A. Krick, G. R. Bourne and W. G. Sawyer, Tribology Letters 40 (2010) 3-9 [pdf version]
    DOI: 10.1007/s11249-009-9514-7

  38. “A Little Analysis of Errors in Friction for Small Wear Tracks”,
    B. A. Krick and W. G. Sawyer, Tribology Letters 39 (2010) 221-222 [pdf version]
    DOI: 10.1007/s11249-010-9605-5


Undergraduate Research Positions Available

Research Opportunities

Oportunity for hands on research experience.

Now Accepting Applications.

In the Tribology Laboratory, undergraduates will do experimental research focused on interfacial interactions of condensed matter. This includes studying the fundamental origins of friction, wear, surface deformation and adhesion on complex surfaces and materials ranging from cells to nanocomposites in environments ranging space to kilometers under water.

Active research includes analysis of materials that recently returned from the international space station, evaluating wear of dinosaur dental fossils, developing and patenting ultra-low wear polymer nanocomposites, studying and designing biocompatible and bio-inspired polymeric and hydrogel materials, and collaborating internationally on the physics of soft matter interactions. This research in tribology is at the intersection of mechanical engineering, materials science and surface physics.

Nanomechanical and Tribological Properties on Hadrosaurid Dinosaurs

Nanomechanical and Tribological Properties on Hadrosaurid

Prof. Greg Sawyer, Greg Erickson and Brandon Krick measured nanomechanical and tribological properties on hadrosaurid (duck-billed dinosaur) dental fossils from the American Museum of Natural History. Using custom instruments, we measured tissue hardness and wear rates that were preserved in the 65 million year old tooth. These properties are preserved in fossilized teeth because apatite mineral content is the major determinant of dental tissue hardness. Measured tissue wear rates were used to simulate the formation of hadrosaurid tooth chewing surfaces using a 3-D wear simulation. The simulation results in a surface profile nearly identical to a naturally worn hadrosaurid dental battery. The model revealed how each tissue (of differing wear rates) contributed to the formation of sophisticated slicing and grinding features in these reptiles tens of millions of years before mammals evolved analogous chewing capacity. This capacity to measure wear-relevant properties preserved in fossils provides a new route to study biomechanics throughout evolution. See Journal papers:
Science, October 5, 2012, pp.98-101.

Experiments back from the International Space Station

Space Tribometers and Samples back for analysis

Materials on the International Space Station Experiments Space Tribometerd

Materials on the International Space Station Experiments (MISSE) Space Tribometers were the first ever active tribometers directly exposed to the Low Earth Orbit Environment

The Tribology Laboratory at Lehigh University is under construction

The lab as of May 2013

The lab as of July, 3rd 2013

The main laboratory is located in Lehigh's Packard Laboratory.