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The surface characteristics of the femoral component affect polyethylene wear in modular total knee replacements. In the present retrieval study, the surface characteristics of cobalt–chromium (CoCr) alloy and oxidized zirconium (OxZr) femoral components were assessed and compared.Twenty-six retrieved CoCr alloy femoral components were matched with twenty-six retrieved OxZr femoral components for...
To enhance the light extraction efficiency of a resonant cavity light-emitting diode (RCLED), a soft embossing technique was developed to fabricate a 2-D grating on the RCLED output surface. The optimal 2-D grating parameter was designed by a rigorous coupled wave analysis code. By embossing the 2-D grating on the output of a commercial RCLED, a 49% light extraction enhancement was achieved using...
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