Abstract Tribological applications of polytetrafluoroethylene (PTFE) are often limited by technological complexity to overcome its poor wear resistance. Here, a PTFE/polyetheretherketone (PEEK) heterolayer (HL) was proposed and evaluated as new solid lubrication solution. Pin-on-disk tribometry found the lowest friction coefficient ( μ ) 0.031 ultralow for PEEK/HL under typical conditions. The ...

Introduction: Repairing cartilage is an ongoing challenge due to the limited autonomous healing ability of cartilage, and the lack of long term intervention strategies. Therefore, there is a great need for engineered biomaterials for cartilage replacement therapy to delay further invasive treatments. Hydrogels have been explored for this purpose. Polyvinyl alcohol (PVA) hydrogels are one of the...

Owing to specific characteristics engendered by their lamellar structures, transition metal dichalcogenides are posited as being some of the best dry lubricants available. Herein, we report a density functional investigation into the sliding properties and associated phenomena of these materials. Calculated potential energy and charge transfer profiles are used to highlight the dependence of sh...