Nanostructured Ti-W mixed-metal oxides: Structural and electronic properties

Article Abstract:

An investigation of the structural and electronic properties of Ti-W binary mixed oxide nanoparticles is conducted using X-ray diffraction, Raman, X-ray absorption spectroscopies, UV-vis spectroscopy, and density functional calculations. It is concluded that UV-vis spectra show a nonlinear decrease of the band gap in the Ti-W solid solutions with a characteristic turning point at a W content of ca.15 atom %.

Science & research, Research, X-rays, X-ray diffraction, Raman spectroscopy, Ultraviolet spectrometry

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Photophysical and photocatalytic properties of SrTi[O.sub.3] doped with Cr cations on different sites

Article Abstract:

The photophysical and photocatalytic properties of two Cr-doped SrTi[O.sub.3], ([Sr.sub.0.95][Cr.sub.0.05])Ti[O.sub.3] and Sr([Ti.sub.0.95][Cr.sub.0.05])[O.sub.3], synthesized by a conventional solid-state reaction method are studied. The possible electronic structures of the two Cr-doped SrTi[O.sub.3] are proposed in relation to their photophysical and photocatalytic properties.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Chromium Compounds, Strontium

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Bacteria counting with impedance spectroscopy in a micro probe station

Article Abstract:

A method, which is implemented by low-frequency impedance spectroscopy, is described to quantify the density of viable biological cells in suspensions. A micro probe station with coplanar Ti electrodes is electrically characterized and used as a measuring unit for the impedance spectroscopy recordings.

Impedance spectroscopy

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