As an application of the interferometric technique we used a Mach–Zehnder interferometer (MZI) to determine both refractive indices (RIs) and RI's increments (dndc) for a polymer material (standard polystyrene) in different solvents.... more
As an application of the interferometric technique we used a Mach–Zehnder interferometer (MZI) to determine both refractive indices (RIs) and RI's increments (dndc) for a polymer material (standard polystyrene) in different solvents. The solvents we used are benzene, methyl ethyl ketone (MEK) and dimethylformamide (DMF). The polystyrene is solved in each solvent with different concentrations. The light source we have used is the Argon-ion laser (all lines). This work is a step for the determination of the weight average of molecular weight (WAMW) of standard polystyrene and other related scattering parameters.
ABSTRACT Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T = 5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied... more
