Raman spectroscopy and x-ray diffraction are applied in the study of interfaces in cellulose fibre-based composites. Detailed theory is given for the origins of Raman scattering by polymer molecules, as well as
Raman spectroscopy is an optical technique that detects intrinsic vibrational, rotational and other low-frequency modes in molecules upon inelastic scattering of monochromatic light. Because different chemical functional groups scatter light at different frequencies, Raman spectroscopy can be used as a tool...
Nanometric probes based on surface-enhanced Raman scattering (SERS) are promising candidates for all-optical environmental, biological and technological sensing applications with intrinsic quantitative molecular specificity. However, the effectiveness of
Raman spectroscopy (RS) is based on the inelastic scattering of light in which an incident excitation radiation interacts with the majority of molecules that induce displacement of the energy of the incident photon by an amount equal to the internal vibrational energy. ...
如果只有动量改变,表示改变了光子进行的方向,即向四方散射,若没有能量的改变,则光的频率不变,则是一种弹性碰撞,即为瑞利散射(Revleigh scattering)。如果有光子能量的改变,则频率(波长或波数)就改变,则是一非弹性碰撞,即为拉曼散射(Raman scattering)。散射光包含瑞利散射及拉曼散射的光谱。
Chandrasekhara Venkata Raman first observed Raman scattering in 1928 and subsequently received the 1930 Nobel Prize in Physics for his discovery. Today, Renishaw's high-performance Raman microscopes are widely used by scientists and engineers to understand more about the composition of materials. Explo...
Raman spectroscopy uses scattering of laser light to probe molecular structure. Of every million photons scattered, a single photon interacts with the vibrational states of a sample molecule and emits light of a different wavelength. Raman can be used to measure various solids, liquids and powders....
Raman spectroscopy is a highly selective and non-destructive optical spectroscopy technique which relies on the inelastic scattering of laser light to probe molecular structure. The non-destructive nature of Raman measurements along with the molecular specificity of the spectra make it an optimal techniqu...
Raman Spectroscopy is an analytical technique that uses scattered light to measure a sample's vibrational energy modes. Raman scattering, an inelastic process, provides chemical and structural information, identifying substances via their unique Raman 'fingerprint'. Raman spectroscopy measures the energy ga...
Advantages of Raman spectroscopy Parts of a Raman spectrometer Photoluminescence explained Surface-enhanced Raman scattering (SERS) Surface-enhanced Raman scattering (SERS) can increase the intensity of Raman scattering from molecules that are adsorbed on SERS substrates. SERS substrates could be roughened ...