Spectroscopic refractive indices of monoclinic single crystal and ceramic lutetium oxyorthosilicate from 200 to 850nm J. Appl. Phys. 112, 063524 (2012) Full extraction methods to retrieve effective refractive index and parameters of a bianisotropic metamaterial based on material dispersion models J. Appl. Phys. 112, 064907 (2012) GaN-based light emitting diodes with micro-and nano-patterned structures by femtosecond laser nonlinear decomposition Appl. Phys. Lett. 101, 131103 (2012) On the method of photoluminescence spectral intensity ratio imaging of silicon bricks: Advances and limitations J. Appl. Phys. 112, 063116 (2012) Aluminium doped Zn1−xMgxO-A transparent conducting oxide with tunable optical and electrical properties A new technique for measuring the refractive index at high pressure in a diamond anvil cell is reported. This technique was applied to a 4:l methanohethanol mixture at room temperature and pressures up to 16.9 GPa. A parameterization is given for the refractive index that fits the data with a residual standard error of 4~ 10~~ at frequencies between 12 000 and 24 000 cm-l and pressures between 0.5 and 11.5 GPa. A sharp change in slope of the refractive index vs pressure was observed at the glass transition near 10 GPa. Modifications of the technique which should allow measurements of the refractive index to much higher pressures are discussed.
Structural transformation in y-Fezo3 nanocrystals (about IOnm) with dodecyl benzene sulfonic (DBS) coated is studied by using high-pressure energy dispersive x-ray diffraction o f synchrotron radiation and high-resolution transmission electron microscopy (HRTEM). Relative to the bulk crystal, the transition pressure showed a decrease while the compressibility increases significantly up to 375 (A9 GPa). HRTEM picture confirmed that there is surface cladding surrounding nanocrystals due to DBS, which formed new special boundaries between nanocrystals and should be different from the ordinary grain boundaries. The experimental results imply that the surface layers of y-Fe& nanocrystals have strong effect on the compressibility.
Differential EXAFS (DiffEXAFS) is able to detect subtle atomic perturbations in the local area of the absorbing atom. Here a new method of performing DiffEXAFS experiments under the modulation of high pressure has been developed. Periodic pressure was achieved in the gasket with the help of a dynamic diamond anvil cell, and the measurements were conducted in common energy-scanning mode. This technique has been utilized on ZnSe at 4.8 GPa. The present results have demonstrated a good agreement with the equation of state of ZnSe, and revealed sensitivity to atomic displacements of one order higher in magnitude than that of conventional EXAFS.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.