The excitation wavelength dependence of the Raman cross-section (excitation profile) was fitted to a single-term Albrecht A-term pre-resonance approximation formula (AATPA). A best fit was obtained for the value of the resonant state, νe = 89 100 cm−1 and the coupling constant, K = ...
Regarding Rayleigh and Raman scattering: I'm trying to understand the implications of the Raman wavefunction, being time independent. It certainly makes the derivation of the resonance Raman cross-section simple, but I'm struggling to understand the role of the imaginary component... ixx Thread ...
In the cross polarization geometry (the polarization of incident light is perpendicular to that of scattered light), all of the cases have four-fold symmetry, but the intensity is significantly reduced when the JT plane is perpendicular to the substrate, i.e., ...
Full size image Let us focus first on the peaks due to the out-of-plane A1g/\({{\rm{A}}^{\prime} }_{1}\)vibrations at ~174 cm−1, which correspond to the Raman-active A1gmode in bulk MoTe228,29,30. Their characteristic pattern originating from the Davydov splitting can be ...
In non-graphitizing carbons it starts at high temperatures of about 2400 ∘C, because of randomly oriented crystallites and strong cross-linking. These findings are in accordance with the results of the behavior of the non-graphitizing and graphitizing resin and pitch samples presented here. ...
CrossrefView in ScopusGoogle Scholar Lee et al., 1988 C. Lee, W. Yang, R.G. Parr Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density Phys. Rev., 41 (1988), pp. 785-789 View in ScopusGoogle Scholar Magazù et al., 1998 S. Magazù,...
According to the general theory in Section 2, the universal formula of the polarized Raman intensity under the geomatical configuration of off- axis backscattering is as follows: TO1 mode: Ix ∝ b2cos2 φ sin2 β sin2(c 17.23 − α), TO2 mode: Iy ∝ b2cos2 φ sin2 β cos2(α...
Despite the high potential for multiplexing, the biological application of Raman spectroscopy is greatly limited by its small Raman cross-section, which is typically 108~1014 times smaller than that of fluorescent dyes31. To amplify the signal, our group has recently developed a simple strategy to...
(2) the Raman cross-sectionR(n) decreases with increasingn; and most importantly, (3) a Gaussian or Lorentzian-type lineshape functionf[(δν/w)2] affords a very strong dependence of the Raman intensity on the frequency shift, where δν = ν+(n) − ν+(n0), withν+(...
The resulting tablet has a cross-section as shown in FIG. 6. In addition to providing long lasting flavor release and unique flavor adhering properties, it will be seen that the present invention readily lends itself to employment in variations of colors and/or flavors in the separate phases...