Irradiated samples of the three fused silica grades exhibit changes in the broad and asymmetric R-band (蠅_1 around 445 cm~(-1)), in D1 (490 cm~(-1)) and D_2 (605 cm~(-1)) bands associated to small-membered rings. The D_2 band shows an increase with increasing fluences for ...
which indicates that the present thermal infusion method is effective to prepare highly dispersed molybdenum oxide within the mesoporous silica spheres. After the hydration of Mo(VI)@mSiO2 with water
We report the observation of spontaneous and stimulated Raman scattering in a silica-cladded silicon photonic crystal (PhC) waveguide (WG) with modified holes. Spontaneous Raman scattering in the WG was enhanced when the Stokes wavelength was approached to the bandedge of a WG mode. A maximum en...
which indicates that the present thermal infusion method is effective to prepare highly dispersed molybdenum oxide within the mesoporous silica spheres. After the hydration of MoVI@mSiO2 with water, more
Recently, competing random lasing and stimulated Raman scattering mechanisms have been observed for the same gain medium infiltrated in diffusive silica-based solid foams. Specifically, the light transport mean free path in such disordered media has been identified to be a parameter of choice to tune...
Infrared (between 400 and 8000 cm) and Raman (between 5 and 400 cm) spectra of silica powders are interpreted to discuss the differences between fumed, gel and precipitated samples. Site models of the surfaces of fumed silica are proposed. These models are based on surfaces resembling faces f1...
We report the fabrication of surface enhanced Raman spectroscopy (SERS) fused silica glass substrates using fast femtosecond-laser (fs-laser) scan, followed by silver chemical plating. A cross-section enhancement factor (EF) of 2.5×106, evaluated by Rhodamine 6G (107M solution), was obtained. ...
The gold nanostar@silica core–shell nanoparticles conjugated with glucose oxidase (GOx) enzyme molecules have been developed as the surface-enhanced Raman scattering (SERS) biosensor for label-free detection of glucose. The surface-immobilized GOx enzyme catalyzes the oxidation of glucose, producing hyd...
Three red pigments r1, r2 and r3 were extracted and separated by means of MgO-Diatomaceous Earth(1:2,W/W) column and silica-gel G TLC from Potamogeton crispus L., the good separating solvent mixtures on the silica G TLC were:hexane-ethyl acetate-acetone-methanol=27:4:2:2 (v/v/v/v...
Resonant Raman scattering experiments are carried on single-walled carbon nanotubes (SWCNTs) suspended between silica spheres. Weak uniaxial strain is intr... J Wang,R Cui,Y Liu,... - 《Journal of Physical Chemistry C》 被引量: 78发表: 2009年 Graphical method for assigning Raman peaks of ...