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To investigate the friction dynamics (time evolution of the friction response, including stiction and stick–slip sliding) between viscoelastic surfaces lubricated with complex-fluid films, a ‘wavelet decomposition’ time-series analysis method was applied to measured friction traces. Data were acquired using an updated ‘Rotating Disk’ attachment for the surface forces apparatus (RD-SFA). We have studied...
Hyaluronic acid (HA) of different molecular weights (M w ) was grafted onto mica surfaces to study the effects of M w on the conformation and wear protection properties of a grafted HA (gHA) layer in lubricin (LUB) and bovine synovial fluid (BSF) using a surface forces apparatus. The M w of gHA had significant effects on the wear pressure (P w ), at which point the...
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