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A Raman Spectroscopic Study of MoS2 and MoO3: Applications to Tribological Systems
Molybdenum disulfide (MoS2) and molybdenum trioxide are investigated using Raman spectroscopy with emphasis on the application to tribological systems. The Raman vibrational modes were investigatedExpand
Macroscopic Friction Coefficient Measurements on Living Endothelial Cells
Arterial stent deployment by balloon or self-expandable structure introduces shear forces and radial forces that can damage or remove the endothelial cell layer. These factors can subsequently causeExpand
A new continuously differentiable friction model for control systems design
For high-performance engineering systems, model-based controllers are typically required to accommodate for the system nonlinearities. Unfortunately, developing accurate models for friction has beenExpand
A study on the friction and wear behavior of PTFE filled with alumina nanoparticles
Abstract A solid lubricant composite material was made by compression molding PTFE and 40 nm alumina particles. Prior to compression molding the constituent powders were blended using a jet millingExpand
Lyapunov-Based Tracking Control in the Presence of Uncertain Nonlinear Parameterizable Friction
A tracking controller is developed in this paper for a general Euler-Lagrange system that contains a new continuously differentiable friction model with uncertain nonlinear parameterizable terms, and a recently developed integral feedback compensation strategy is used to identify the friction effects online. Expand
Super-Compressible Foamlike Carbon Nanotube Films
It is reported that freestanding films of vertically aligned carbon nanotubes exhibit super-compressible foamlike behavior, and the lightweight, highly resilient nanotube films may be useful as compliant and energy-absorbing coatings. Expand
Computational wear prediction of a total knee replacement from in vivo kinematics.
A computer modeling approach that uses fluoroscopically measured motions as inputs and predicts patient-specific implant damage using computationally efficient dynamic contact and tribological analyses is reported, providing a robust tool for accurately predicting clinically relevant wear in total knee replacements. Expand
Complex Dental Structure and Wear Biomechanics in Hadrosaurid Dinosaurs
It is shown that hadrosaurids broke from the primitive reptilian archetype and evolved a six-tissue dental composition that is among the most sophisticated known, three-dimensional wear models incorporating fossilized wear properties reveal how these tissues interacted for grinding and ecological specialization. Expand
A low friction and ultra low wear rate PEEK/PTFE composite
This paper presents a PEEK filled PTFE composite that exhibits low friction and ultra-low wear. It is hypothesized that a synergistic effect shuts down the dominant wear mechanism of eachExpand