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Crystalline–amorphous core–shell silicon nanowires (SiNWs) grown separately on glass and stainless steel substrates were investigated by Raman spectroscopy. Raman spectra confirmed the presence of crystalline and amorphous silicon phases in both samples. With respect to bulk silicon, the crystalline Raman peaks for the nanowires grown on a glass substrate showed much larger red shift and spectral...
Ordered arrays of vertical silicon nanowires reflect vivid colors. Sensitivity of the colors to refractive-index of the surrounding medium was investigated and a resolution of 1.6×10−3 was achieved; resulting in a low-cost simple refractive-index sensor.
Silicon nanowires were grown on glass and steel substrates and investigated with Raman spectroscopy. It is shown that the Raman shift is mainly due to local heating of the nanowires.
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