For a low input power of 0.8mW, the nanowires grown on stainless steel showed no shift in the first order Raman peak as compared to bulk silicon, however a small spectral broadening was still observed. TEM images for the nanowires grown on steel substrate.doi:10.1002/pssa.201228235...
Micro-Raman scattering and electron field emission characteristics of silicon nanowires (SiNWs) synthesized by metal assisted chemical etching (MACE) are investigated. Scanning electron microscopy images reveal the growth of well aligned vertical SiNWs. Raman shift and size relation from bond-...
We calculate the effects of phonon confinement on the Raman spectra of Silicon nanowires. The theoretical predictions are checked by measuring the Raman spectra of SiNWs selectively grown by plasma enhanced chemical vapor deposition (PECVD) employing gold as a catalyst. In order to fully account fo...
SWNT2). The integrated peak intensities for both nanotubes are plotted in Figure 6c as a function of AFM deflection voltage. We often observe a small, finite, broad peak intensity for zero force applied to the silicon cantilever, which then disappears for low values of strain (up to ca. 1...
Ordered silicon nanowires (SiNWs) with single crystal structure were synthesized using nanochannel-AlO(NCA) and the chemical vapor deposition (CVD) method. Firstly, the SiNWs with nearly amorphous structure were fabricated at 500°C; then the SiNWs with crystalline structure were obtained by anneali...
signal. Low-order polynomial terms are used to account for small drifts of the background signal. In this work,mvaries from 0 to 2. Since the experiment was carried out on a silicon dioxide substrate, the silicon dioxide Raman spectrum was also included as a reference in the fitting process...
S. Hofmann, C. Ducati, R.J. Neil et al., Gold catalysed growth of silicon nanowires by plasma enhanced chemical vapor deposition. J. Appl. Phys.94, 6005–6012 (2003) ADSGoogle Scholar Q. Xiong, R. Gupta, K.W. Adu et al., Raman spectroscopy and structure of crystalline gallium phosp...
on the PCNA substrate are well distinguishable and consistent with those of the ground truth (with small differences which may be attributed to the different adsorption orientations of the biomolecules on the silicon and PCNA substrates5), which is verified by our peak assignment (Supplementary Fig...
Ag nanoparticles (NPs) coated with silica nanolayers were decorated onto a large-scale and uniform silicon nanowire array (SiNWA) by simple chemical etching and metal reduction processes. The three-dimensional Ag/SiNWAs thus formed are employed as a substrate for surface-enhanced Raman scattering (...
Origin of additional broad peaks in Raman spectra from thin germanium-rich silicon–germanium films Additional broad peaks in Raman spectra from thin Ge-rich SiGe films were examined in detail. The broad peak on the low-wavenumber side of first-order optical phonon was also present for pure Ge...