This paper proposes a simple, accurate, precise, rapid, and non-destructive wavelength-dispersive x-ray fluorescence (WDXRF) spectrometric technique for determining Sc, V, Cr, Co, Ni, Cu, Zn, Rb, Sr, Y, Zr, Nb, Ba, Pb, and Th in komatiites, and discusses the accuracy, precision, ...
This wavelength was used to test the selectivity of carbon dots to different metal ions. Finally, using Cu2+ with the strongest carbon dot selectivity, the Cu2+ concentration and fluorescence data were tested, and the detection limit of the carbon dots for copper ions was calculated to be ...
aextinction contours (GB1 in Fig. 4a), indicating a high level of internal stresses and elastic distortions[translate] awavelength of X-ray beam ( = 0.15406nm for Cu K radiation), ˇ[translate]
The internal quantum efficiency of blue LEDs is almost close to the limit, therefore, advanced transparent electrode has been long explored for gaining high external quantum efficiency. However, work function mismatch at electrode-semiconductor interface
By using the whole-wavelength white LED light as the excitation light source, the White Light mode exhibits softness and uniformity and is applicable for observing or imaging the SDS-PAGE gels that are stained with the Coomassie Blue or Silver Stain. It can also be employed as a simple film...
These emission spectra with theblue鄄raypeakat420 nmand470 nm,whichwereobtainedby excitingthe 9 Cu1and Cu2 luminescence center under different wavelength,and can be attributed to the3d 4s寅 10 + 3d electronic transition of Cu ion. The mechanism of luminescence and concentration quenching process...
where λ = 0.1564 nm refers to the wavelength of the X-ray using the CuKα monochromatic radiation, while β and θ are the FWHM of the XRD sample peaks in radians and the Bragg’s angle of the diffraction peak, respectively. ...
The structure of TCC was further determined by X-ray sing-crystal diffraction technology, and the crystal structure of TCC was shown in Fig. 1. The details about crystallographic of TCC are summarized in Tables S2, S3. TCC crystallized in the triclinic crystal system with space-group P-1. ...
The X-ray powder diffraction (XRD) study was conducted on Bruker D2 phaser X-ray dif- fractometry at 10 kV using Cu Kαradiation at a scanning step size of 0.05° and with residence time of 0.5 min. SEM images were obtained from JSM-7610F field-emission scanning electron ...
Under a laser beam at wavelength of 330 nm, catalysts were excited with PL spectra at about 593 nm. The peak at 660 nm is originated from the laser contribution. It is observed that the 593 nm peak intensity increases with the N2H4-adding content or the Cu+ content. The more ...