In the present work, the non-resonant Raman-active modes are calculated for several diameters, chiralities and sizes for homogeneous and inhomogeneous bundles of single-walled carbon nanotubes (BWCNTs), using the spectral moment's method (SMM). Additional intense Raman-active modes are present in...
Raman investigations of the n = ∞, 3 layer perovskites over the full range of Ca[harr ]Sr substitution show that trends in the evolution of active modes are in accord with the known structural transitions. The spectra exhibit broad, second-order features and sharp first order peaks. Degenerat...
Raman spectroscopy has proven to be a powerful, local structural probe for MnO2.δ-phase MnO2 has strong Raman-active (Mn-O) stretching transitions at 646 and 575 cm-1. A somewhat weaker transition at 510 cm-1 is also prominent but less intense in most δ-phase MnO2 samples. All three ...
LN is a uniaxial material with its crystal axis along the z direction, as shown in Fig.1a. LN devices are fabricated on an X-cut thin-film wafer, where thex-axis is normal to the wafer plane. LN has two Raman-active phonon symmetries: the A symmetry polarised along thez-axis and th...
To amplify the signal, our group has recently developed a simple strategy to prepare ultra-bright Raman dots (Rdots) by non-covalently doping polymer nanoparticles with Raman-active dyes32. When coupled with stimulated Raman scattering (SRS) microscopy, these Rdots show a superb imaging ...
Theory and implementation of a Raman active fiber delay line In an optical delay line made of a single-mode reentrant fiber loop, Raman amplification is used to compensate for recirculating signal losses. Concurrent ... E Desurvire,M Digonnet,H Shaw - 《Journal of Lightwave Technology》 被引...
Pressure dependence of the Raman active vibrations in InP-CdS hybrid nanoparticles The effects of pressure on the confined and surface-optical (SO) vibrations in core-shell InP-CdS colloidal nanoparticles are explored experimentally by Ra... RE Tallman,BA Weinstein,C Trallero-Giner,... - 《...
Although LiPF6 has been shown to induce a fluorescence background in Raman spectroscopy experiments, its strong PF\({}_{6}^{-}\) Raman-active band would make it an ideal candidate for further studies.45 There is little doubt, therefore, that many current and future electrolyte mixtures ...
Furthermore moiré pattern would result that off-center phonons of constituents are folded to Γ point of the moiré superlattices31,91, and generate additional Raman active modes, such as the additional R and R′ modes in t2LG and moiré phonons in t2LM30,31. Figure 7a presents moiré ...
The vibrational levels of selected rhombohedral rare earth oxyfluorides, REOF; RE = La, Gd, and Y, were deduced from the room temperature IR absorption and the Raman scattering spectra between 180 and 1000 cm−1 and between 10 and 700 cm−1, respectively. All four IR-active (2A2u +...