Journal Papers

1. Measurement Uncertainties in Wear Rates
   David L. Burris & W. G. Sawyer
   
   
2. Temperature and Water Vapor Pressure Effects on the Friction Coefficient of Hydrogenated Diamondlike Carbon Films
   P. L. Dickrell, N. Argibay, O. L. Eryilmaz, A. Erdemir, & W. G. Sawyer
   
   
3. A Route to Wear Resistant PTFE via Trace Loadings of Functionalized Nanofillers
   D. L. Burris, S. Zhao, R. Duncan, J. Lowitz, S. S. Perry, L. S. Schadler, and W. G. Sawyer
   
   
4. Addressing Practical Challenges of Low Friction Coefficient Measurements
   D. L. Burris and W. G. Sawyer
   
   
5. High Current Density Copper-on-Copper Sliding Electrical Contacts at Low Sliding Velocities
   J. A. Bares, N. Argibay, N. Mauntler, G. J. Dudder, G. R. Bourne, and W. G. Sawyer
   
   
6. In Situ Graphite Lubrication of Metallic Sliding Electrical Contacts
   J. A. Bares, N. Argibay, P. L. Dickrell, G. R. Bourne, D. L. Burris, J. C. Ziegert, and W. G. Sawyer
   
   
7. Multifunctionality of Single-Walled Carbon Nanotube-Polytetrafluoroethylene Nanocomposites
   J. R. Vail, D. L. Burris, & W. G. Sawyer
   
   
8. Transition from Thermal to Athermal Friction under Cryogenic Conditions
   X. Zhao, S. R. Phillpot, W. G. Sawyer, S. B. Sinnott, and S. S. Perry
   
   
9. Numerical Integration Schemes and Parallel Computation for Sliding Wear Using Finite Element Method
   S. Mukras, N. H. Kim, and W. G. Sawyer
   
   
10. Closed Channel Fabrication using Micromolding of Metallic Glass
    G. R. Bourne, J. Bardt, T. L. Schmitz, J. C. Ziegert, and W. G. Sawyer
    
    
11. Effect of Normal Load on Polytetrafluoroethylene Tribology
    P. R. Barry, P. Y. Chiu, S. S. Perry, W. G. Sawyer, S. R. Phillpot, S. B. Sinnott
    
    
12. Carbon Nanotube Based Electrical Brush Contacts
    G. Toth, J. Maklin, N. Halonen, J. Palosaari, J. Juuti, H. Jantunen, K. Kordas, W. G. Sawyer, R. Vajtai, and P. M. Ajayan
    
    
13. Carbon Nanotube Based Electrical Brush Contacts
    G. Toth, J. Maklin, N. Halonen, J. Palosaari, J. Juuti, H. Jantunen, K. Kordas, W. G. Sawyer, R. Vajtai, and P. M. Ajayan
    
    
14. Passivation Oxide Controlled Selective Carbon Nanotube Growth on Metal Substrates
    J.B. Bult, W. G. Sawyer, P.M Ajayan, and L. S. Schadler
    
    
15. Accessing Inaccessible Interfaces: In Situ Approaches to Materials Tribology
    W.Gregory Sawyer and Kathy J. Wahl, Guest Editors
    
    
16. Observing Interfacial Sliding Processes in Solid-Solid Contacts
    W.Gregory Sawyer and Kathy J. Wahl
    
    
17. A Possible Link Between Macroscopic Wear and Temperature Dependent Friction Behaviors of MoS2 Coatings
    M. A. Hamilton, L. A. Alvarez, N. A. Mauntler, N. Argibay, R. Colbert, D. L. Burris, C. Muratore, A. A. Voevodin, S. S. Perry, W. G. Sawyer
    
    
18. Integrating experimental and simulation length and time scales in mechanistic studies of friction
    W. G. Sawyer, S. S. Perry, S. R. Phillpot, and S. B. Sinnott
    
    
19. Effect of Particle Size on the Wear Resistance of Alumina-Filled PTFE Micro- and Nanocomposites
    S. E. McElwain, T. A. Blanchet, L. S. Schadler, and W. G. Sawyer
    
    
20. Origin of Ultralow Friction andWear in Ultrananocrystalline Diamond
    A. R. Konicek, D. S. Grierson, P. U. P. A. Gilbert, W. G. Sawyer, A.V. Sumant, & R.W. Carpick
    
    
21. Effect of the sliding orientation on the tribological properties of polyethylene in molecular dynamics simulations
    S. J. Heo, I. Jang, P. R. Barry, S. R. Phillpot, S. S. Perry, W. G. Sawyer, & Susan B. Sinnott
    
    
22. Effect of Simulation Conditions on Friction in Polytetrafluoroethylene (PTFE)
    P. R. Barry, I. Jang, S. S. Perry, W. G. Sawyer, S. B. Sinnott, & S. R. Phillpot
    
    
23. Mechanical Characterization of Contact Lenses by Microindentation: Constant Velocity and Relaxation Testing
    S. J. Lee, G. R. Bourne, X. Chen, W. G. Sawyer, & M. Sarntinoranont
    
    
24. First-Principles Determination of Static Potential Energy Surfaces for Atomic Friction in MoS2 and MoO3
    T. Liang, W. G. Sawyer, S. S. Perry, S. B. Sinnott, & S. R. Phillpot
    
    
25. Friction Coefficient Measurement of Hydrogel Materials on Living Epithelial Cells
    A. C. Dunn, J. A. Cobb, A. N. Kantzios, S. J. Lee, M. Sarntinoranont, R. Tran-Son-Tay, & W. Gregory Sawyer
    
    
26. Tribological investigation of the effects of particle size, loading and crystallinity on poly(ethylene) terephthalate nanocomposites
    P. Bhimaraj, D. Burris, W. G. Sawyer, C. G. Toney, R. W. Siegel, Linda S. Schadler
    
    
27. Sliding orientation effects on the tribological properties of polytetrafluoroethylene
    I. Jang, D. L. Burris, P. L. Dickrell, P. R. Barry, C. Santos, S. S. Perry, S. R. Phillpot, S. B. Sinnott, & W. Gregory Sawyer
    
    
28. Predicting Knee Replacement Damage in a Simulator Machine Using a Computational Model With a Consistent Wear Factor
    D. Zhao, H. Sakoda, W. G. Sawyer, S. A. Banks, & B. J. Fregly
    
    
29. A novel method for low load friction testing on living cells
    J. A. Cobb, A. C. Dunn, J. Kwon, M. Sarntinoranont, W. G. Sawyer, & Roger Tran-Son-Tay
    
    
30. Spatial geometric effects on the friction coefficients of UHMWPe
    A. C. Dunn, J. G. Steffens, D. L. Burris, S. A. Banks, & W. G. Sawyer
    
    
31. Macroscopic Evidence of Thermally Activated Friction
    D. L. Burris, S. S. Perry, & W. G. Sawyer
    
    
32. Macroscopic Friction Coefficient Measurements on Living Endothelial Cells
    A. C. Dunn, T. D. Zaveri, B. G. Keselowsky & W. G. Sawyer
    
    
33. Thermally Activated Friction
    X. Zhao, M. A. Hamilton, W. G. Sawyer, & S. S. Perry
    
    
34. Direct Contact-Area Computation for MEMS Using Real Topographic Surface Data
    D. J. Dickrell, M. T. Dugger, M. A. Hamilton, and W. G. Sawyer
    
    
35. Lyapunov-Based Tracking Control in the Presence of Uncertain Nonlinear Parameterizable Friction
    C. Makkar, G. Hu, W. G. Sawyer, and W. E. Dixon
    
    
36. Hierarchically constructed metal foam/polymer composite for high thermal conductivity
    D. L. Burris & W. G. Sawyer
    
    
37. Micromolding three-dimensional amorphous metal structures
    J. A. Bardt, G. R. Bourne, T. L. Schmitz, J. C. Ziegert, & W. G. Sawyer
    
    
38. Polymeric Nanocomposites for Tribological Applications
    D. L. Burris, B. Boesl, G. R. Bourne, & W. G. Sawyer
    
    
39. Shrink fit tool holder connection stiffness/damping modeling for frequency response prediction in milling
    T. L. Schmitz, K. Powell, D. Won, G. S. Duncan, W. G. Sawyer, and J. C. Ziegert
    
    
40. Cumulative damage modeling of solid lubricant coatings that experience wear and interfacial fatigue
    N. L. McCook, D. L. Burris, N. H. Kim & W. G. Sawyer
    
    
41. Tribological results of PEEK nanocomposites in dry sliding against 440C in various gas environments
    N. L. McCook, M. A. Hamilton, D. L. Burris, & W. G. Sawyer
    
    
42. A Biphasic Model for Micro-Indentation of a Hydrogel Based Contact Lens
    X. Chen, A. C. Dunn, W. G. Sawyer, & M. Sarntinoranont
    
    
43. Polymer Nanocomposites: A Small Part of the Story
    L.S. Schadler, L. C. Brinson, & W.G. Sawyer
    
    
44. Tunable friction behavior of oriented carbon nanotube films
    P.L. Dickrell, S.K. Pal, G.R. Bourne, C. Muratore, A.A. Voevodin, P.M. Ajayan, L.S. Schadler & W.G. Sawyer
    
    
45. On the friction and wear performance of boric acid lubricant combinations in extended duration operations
    Pushkarraj Deshmukha, Michael Lovell, W. Gregory Sawyer, Anton Mobley
    
    
46. Epoxy, ZnO, and PTFE nanocomposite: friction and wear optimization
    N. L. McCook, B. Boesl, D. L. Burris, & W.G. Sawyer
    
    
47. Tribological behavior of PEEK components with compositionally graded PEEK/PTFE surfaces
    D. L. Burris, & W.G. Sawyer
    
    
48. In-Situ Lubrication with Boric Acid: Powder Delivery of an Environmentally Benign Solid Lubricant
    W.G. Sawyer, J. C. Ziegert, T. L. Schmitz, & T. Barton
    
    
49. A low friction and ultra low wear rate PEEK/PTFE composite
    D. L. Burris & W.G. Sawyer
    
    
50. Super-Compressible Foamlike Carbon Nanotube Films
    A. Cao, P. L. Dickrell, W. G. Sawyer, M. N. Ghasemi-Nejhad, P. M. Ajayan
    
    
51. Cryogenic Friction Behavior of PTFE Based Solid Lubricant Composites
    N. L. McCook, D.L. Burris, P. L. Dickrell, & W.G. Sawyer
    
    
52. Biomechanical Mechanisms for Damage: Retrieval Analysis and Computational Wear Predictions in Total Knee Replacements
    M. K. Harman, S. A. Banks, B. J. Fregly, W. G. Sawyer, & W. A. Hodge
    
    
53. Improved wear resistance in alumina-PTFE nanocomposites with irregular shaped nanoparticles
    D.L. Burris & W.G. Sawyer
    
    
54. Friction coefficient of Soft Contact Lenses: Measurements and Modeling
    A. C. Rennie, P. L. Dickrell, & W.G. Sawyer
    
    
55. Tribological Sensitivity of PTFE-Alumina Nanocomposites to a Range of Traditional Surface Finishes
    David Burris & W.G. Sawyer
    
    
56. Finite Element Analysis and Experiments of Metal/Metal Wear in Oscillatory Contacts
    Nam Ho Kim, Dongki Won, David Burris, Brian Holtkamp, Gregory R. Gessel, Paul Swanson, & W.G. Sawyer
    
    
57. Frictional Anisotropy of Oriented Carbon Nanotube Surfaces
    P. L. Dickrell, S. B. Sinnott, D. W. Hahn, N. R. Raravikar, L. S. Schadler, P. M. Ajayan & W.G. Sawyer
    
    
58. The Wear Resistant Solid Lubricant Coating Made from PTFE and Epoxy
    N. L. McCook, D. L. Burris, G. R. Bourne, J. Steffens, J. R. Hanrahan, & W.G. Sawyer
    
    
59. The Difficulty of Measuring Low Friction: Uncertainty Analysis for Friction Coefficient Measurements
    T.L. Schmitz, J.E. Action, J.C. Ziegert & W.G. Sawyer
     
60. Quantifying multidirectional sliding motions in total knee replacements.
    M.A. Hamilton, M.C. Sucec, B.J. Fregly, S.A. Banks, W.G. Sawyer
     
61. A Gas Surface Interaction Model for Spatial and Time Dependent Friction Coefficient in Reciprocating Contacts: Applications to Near Frictionless Carbon
    P. L. Dickrell, W. G. Sawyer, J. A. Heimberg, I. L. Singer, K. J. Wahl, A. Erdemir
     
62. Effect of matrix morphology on the wear and friction behavior of alumina nanoparticles/poly(ethylene) terephthalate composites
    T. Bhimaraj, D. L. Burris, J. Action, W. Gregory Sawyer, C. G. Toney, R. W. Siegel, L. S. Schadler
    
    
63. Wear Rate Uncertainty Analysis
    T. L. Schmitz, J. E. Action, D. L. Burris, J. C. Ziegert, & W. Gregory Sawyer
    
    
64. Fractional coverage model for the adsorption and removal of gas species and application to superlow friction diamond like carbon
    Pamela L. Dickrell, W. Gregory Sawyer, & Ali Erdemir
     
65. The Relationship between Contact Pressure, Insert Thickness, and Mild Wear in Total Knee Replacements
    Y. Bei, B.J. Fregly, W.G. Sawyer, S.A. Banks & N.H. Kim
     
66. Computational wear prediction of a total knee replacement from in vivo kinematics
    Benjamin J. Fregly, W. Gregory Sawyer, Melinda K. Harman, and Scott A. Banks

 
67. Evolution of Wear in a Two-Dimensional Bushing 
    Daniel J. Dickrell and W. Gregory Sawyer
     
68. Surface shape and contact pressure evolution in two component  surfaces: application to copper chemical mechanical polishing.
    W. Gregory Sawyer
     
69. Temperature modeling in a total knee joint replacement using patient specific kinematics. 
    W. Gregory Sawyer, Matt A. Hamilton, B. J. Fregly, and Scott A. Banks
     
70. A fractional coverage model for gas-surface interaction in reciprocating sliding contacts. 
    W. Gregory Sawyer and Pamela L. Dickrell
     
71. A study on the friction and wear behavior of PTFE filled with alumina nanoparticles.
    W. Gregory Sawyer, Kevin D. Freudenberg, Praveen Bhimaraj, and Linda S. Schadler
    
    
72. Estimation of discretization errors in contact pressure measurements.
    Benjamin J. Fregly, and W. Gregory Sawyer
    
    
73. The evolution of geometry for a wearing circular cam: analytical and computer simulation with comparison to experiment
    D.J. Dickrell, D.B. Dooner,  W. G. Sawyer
    
    
74. Evaluation of a Model for the Evolution of Wear in a Scotch-Yoke Mechanism
    W. Gregory Sawyer, Kelvin I. Diaz, Matthew A. Hamilton, and Brian Micklos
    
    
75. Vapour Phase Lubrication using Hydrocarbon Feed Gases
    James E. Gardner, W. Gregory Sawyer, and Thierry A. Blanchet
    
    
76. Differential Application of Wear Models to Fractional Thin Films
    Thierry A. Blanchet and W. Gregory Sawyer
    
    
77. Lubrication with Granular Flow: Continuum Theory, Particle Simulations, Comparison with Experiment
    W. Gregory Sawyer and John A. Tichy
    
    
78. Wear Predictions for a Simple-Cam Including the Coupled Evolution of Wear and Load
    W. Gregory Sawyer
    
    
79. Vapor-Phase Lubrication in Combined Rolling and Sliding Contacts: Modeling and Experimentation
    W. Gregory Sawyer and Thierry A. Blanchet
    
    
80. High Temperature Lubrication of Combined Rolling / Sliding Contacts via Directed Hydrocarbon Gas Streams
    W. Gregory Sawyer and Thierry A. Blanchet
    
    
81. Lubrication of Mo, W, and Their Alloys with H₂S Gas Admixtures to Room Temperature Air
    W. Gregory Sawyer and Thierry A. Blanchet
    
    
82. High Temperature Lubrication of Various Ceramics and Metal Alloys via Directed Hydrocarbon Feed Gases
    Nicholas J. Barnick, Thierry A. Blanchet, W. Gregory Sawyer, and James E. Gardner
    
    
83. Comparison on Various C2Hx for High Temperature Lubrication by in situ Pyrolysis
    D. M. Holmes, W. Gregory Sawyer, and Thierry A. Blanchet
    
    
84. Lubrication of Silicon Nitride in a Simulated Turbine Exhaust Gas Environment
    W. Gregory Sawyer, Thierry A. Blanchet, and Salvadore J. Calabrese
    
    
85. Solid Lubrication by Decomposition of Carbon Monoxide and Other Gases
    T.A. Blanchet, J.L. Lauer, Y.-F. Liew, S.J. Rhee, W.G. Sawyer
    
    
86. Non-Newtonian Lubrication with the Second-Order Fluid
    W. Gregory Sawyer and John A. Tichy
    
    
87. Friction Modeling and Experimentation for Integral Fasteners for Injection Molded Parts
    W. Gregory Sawyer, Thierry A. Blanchet, Keith N. Knapp II, and Daeyong Lee