Results 31 to 40 of about 167,718 (203)

Gallium Selenide and Rubidium Iodide Filling of Single-Walled Carbon Nanotubes as p, and n-Dopant Chemical Compounds

open access: yesEngineering Proceedings, 2023
I filled the single-walled carbon nanotubes (SWCNTs) with gallium selenide (GaSe) and rubidium iodide (RbI) as p- and n-dopant chemical compounds. The filling was confirmed by high-resolution transmission electron microscopy.
Marianna V. Kharlamova
doaj   +1 more source

Dispersive X-ray absorption spectroscopy using independent grazing-incidence focusing and convexly bent Bragg-crystal dispersing optics

open access: yesJournal of Synchrotron Radiation
We present a modular instrument for dispersive X-ray absorption spectroscopy (DXAS) developed for the Advanced Spectroscopy Beamline at Sector 25 of the Advanced Photon Source.
Juanjuan Huang   +7 more
doaj   +1 more source

Combined X-ray absorption and SEM–EDX spectroscopic analysis for the speciation of thorium in soil

open access: yesScientific Reports, 2023
Mobility and bioavailability of radionuclides in the environment strongly depend on their aqueous speciation, adsorption behavior and the solubility of relevant solid phases. In the present context, we focus on naturally occurring Th-232 at a location in
Sanduni Ratnayake   +8 more
doaj   +1 more source

Fine Structure of X-Ray Absorption Edges [PDF]

open access: yesNature, 1924
IN the issue of the Zeitschrift fur Physik for July 2, 1924, Dr. Coster reports the existence of a white line on the long wave-length side of the absorption edge in the case of the higher valence forms of various elements. Evidence has been obtained in this laboratory that iodic acid and potassium permanganate, two of the substances for which he ...
openaire   +2 more sources

Influence of polyethylene glycol on the physical properties of Co0.2Fe2.8O4 nanoparticles used as MRI contrast agent; synchrotron radiation Fe K-edge XAFS

open access: yesJournal of Materials Research and Technology, 2021
We have synthesized and characterized the surface-modified nanoparticles (NPs) of Co0.2Fe2.8O4/x polyethylene glycol (PEG) (x = 0, 10, 20, 30, and 40%).
N.G. Imam   +5 more
doaj   +1 more source

X-ray absorption spectroscopy of Mn doped ZnO thin films prepared by rf sputtering technique

open access: yesAIP Advances, 2015
A set of r.f. sputter deposited ZnO thin films prepared with different Mn doping concentrations have been characterised by Extended X-ray Absorption Fine Structure (EXAFS) and X-ray Absorption Near Edge Spectroscopy (XANES) measurements at Zn, Mn and O K
Ashok Kumar Yadav   +5 more
doaj   +1 more source

The dissection of atomic clusters with local structure in Ga-Sn alloy melts

open access: yesAIP Advances, 2018
The statistic short-range order (SRO) structure parameters of the Ga-Sn alloy melt are obtained with the X-ray diffractometer. The local atomic and electronic structures around the absorption atoms of Ga and Sn elements are detected by X-ray absorption ...
Xiaolin Zhao   +5 more
doaj   +1 more source

Investigations of fine-paste ware production and exchange in maritime Southeast Asia by electron microscopy and synchrotron X-ray absorption [PDF]

open access: yesProcessing and Application of Ceramics, 2019
The combination of synchrotron X-ray absorption and electron microscopy provided information on the production And exchange of fine-paste ware (FPW), dated to around the 11th to 14th centuries in peninsular Thailand and maritime Southeast Asia. White FPW
Chitnarong Sirisathitkul   +3 more
doaj   +1 more source

Confocal X-ray technology based on capillary X-ray optics

open access: yesReviews in Analytical Chemistry, 2015
Capillary X-ray optics is versatile, and it can be used with synchrotron radiation source, conventional X-ray source, laser-plasma ultrafast X-ray source, and so forth.
Sun Tianxi, Ding Xunliang
doaj   +1 more source

High-resolution x-ray spectrometer for x-ray absorption fine structure spectroscopy

open access: yesReview of Scientific Instruments, 2023
Two extended x-ray absorption fine structure flat crystal x-ray spectrometers (EFX’s) were designed and built for high-resolution x-ray spectroscopy over a large energy range with flexible, on-shot energy dispersion calibration capabilities. The EFX uses a flat silicon [111] crystal in the reflection geometry as the energy dispersive optic covering the
D. A. Chin   +10 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy