Light scattering spectroscopy resolution

Kinoshita S, Kai Y, Yamaguchi M, Yagi T. Direct comparison between ultrafast optical Kerr effect and high-resolution light scattering spectroscopy. Phys Rev Lett 1995 75 148-151. 

The different methods - potentiometry conductometry turbidimetry vis-cometry " calorimetry , kinetira, sedimentation , dynamic flow birefringence, light scattering , high resolution H-NMR spectrometry , chromatography, spectroscopy , electron microscopy , and others have been used for the investigation of the formation and composition of polymer-polymer complex. ... 

It is hard to And better monitoring tools than optical spectroscopy methods when high spatial and temporal resolution is required in addition to noninvasiveness. Traditionally, absorption, light scattering, chemiluminescence, and fluorescence measurements are used for this purpose (Janasek et al. 2006). Those are well-established techniques that establish a simple way of obtaining useful information. However, absorption and scattering measurements provide very little information about the chemical composition. Fluorescence spectroscopy provides more information but is... 

By contrast, laser scattering methods now permit temperature composition and flow measurements that are both nonintrusive and give very high spatial resolution. These light scattering methods include laser Raman spectroscopy, laser-induced fluorescence, coherent Raman spectroscopy as well as laser velocimetry... 

Figure 2.13 Schematic elastic scattering curve of a spherical colloid (e.g. a microemulsion droplet) in solution. As a rule of thumb q 1 is an approximate measure for the spatial resolution of the used scattering experiment. At low values of q (i.e. in the Cuinier region of the scattering curve) the overall size and shape of the particles as well as correlations between different particles can be monitored (typically by static and dynamic light scattering). At high values q, the internal structure of the particles, i.e. the local structure of the interfacial film is resolved (e.g. by neutron or X-ray small angle scattering and neutron spin-echo spectroscopy (NSE)).

Raman spectrometers are used to analyze light scattered by molecules. A major advantage of Raman spectroscopy is the high spatial resolution that can be obtained, typically of the order of 1 gm (compared to approx. 10 gm with FT-IR). 

---