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Journal Highlight: Time-resolved X-ray PIV technique for diagnosing opaque biofluid flow with insufficient X-ray fluxes

Date: Jun 10, 2013

Author: spectroscopyNOW

X-ray particle image velocimetry in which an image intensifier was combined with a high-speed camera was used to reduce exposure time to below 200 µs, and applied to measure high-speed blood flows in a tube

Read More thumbnail image: Journal Highlight Time-resolved X-ray PIV technique for diagnosing opaque biofluid flow with insufficient X-ray fluxes

Diffract and destroy: Fluctuation X-ray scattering

Date: Jun 1, 2013

Author: David Bradley

Fluctuation X-ray scattering could help fill the gaps in our knowledge of protein structure thanks to the short bursts of radiation allowing data to be obtained from non-crystallisable proteins in their native, fluid state albeit with the sacrifice of the protein itself.

Read More thumbnail image: Diffract and destroy Fluctuation X-ray scattering

Low-temperature feedstock: XRD and oxidation

Date: May 15, 2013

Author: David Bradley

X-ray diffraction has been used to study the low-temperature oxidation of the important feedstock chemical ethylene over platinum nanoparticles supported on mesoporous silica, according to a study published in Angewandte Chemie.

Read More thumbnail image: Low-temperature feedstock XRD and oxidation

Journal Highlight: X-ray fluorescence analysis of Co, Ni, Pd, Ag, and Au in the scrapped printed-circuit-board ash

Date: May 7, 2013

Author: spectroscopyNOW

A validated method for the measurement of Co, Ni, Pd, Ag, and Au in ash derived from scrapped printed circuit boards used X-ray fluorescence spectrometry and gave similar results to those from atomic absorption spectrometry.

Read More thumbnail image: Journal Highlight X-ray fluorescence analysis of Co Ni Pd Ag and Au in the scrapped printed-circuit-board ash

Crystallography without the crystals: Porous for support

Date: May 1, 2013

Author: David Bradley

Makoto Fujita of the University of Tokyo, Japan, and Kari Rissanen of the University of Jyväskylä, Finland, have used a porous substrate to bring order to an uncrystallisable target molecule for X-ray diffraction studies, which precludes the need to develop a method for producing crystals of the material. The technique allows nanogram quantities of the target compound to be analysed, the researchers say.

Read More thumbnail image: Crystallography without the crystals Porous for support

Photosynthesis:Study sheds new light

Date: Apr 15, 2013

Author: David Bradley

Caltech chemists believe they can now explain one of the last remaining mysteries concerning the process of photosynthesis in which light powers chemical conversion of carbon dioxide and water into sugars and oxygen. The work is based on synthetic, spectroscopic, and electrochemical studies, including X-ray spectroscopic work, and might one day lead to a range of novel photocatalysts that could be used to drive the water-splitting reactions in a synthetic analogue of photosynthesis.

Read More thumbnail image: PhotosynthesisStudy sheds new light

Journal Highlight: A tunable multicolour rainbow filter for improved stress and dislocation density field mapping in polycrystals using X-ray Laue microdiffraction

Date: Apr 8, 2013

Author: spectroscopyNOW

A new rainbow method for measuring the energy profiles of Laue spots while remaining in the white-beam mode proceeds in the opposite way compared to a monochromator-based method, by simultaneously removing several sharp energy bands from the incident beam.

Read More thumbnail image: Journal Highlight A tunable multicolour rainbow filter for improved stress and dislocation density field mapping in polycrystals using X-ray Laue microdiffraction

Paintable electronics: Bringing polymers into line

Date: Apr 1, 2013

Author: David Bradley

Engineers at the University of Michigan and electronics company Samsung in Korea have devised a method for bringing otherwise unruly semiconducting polymers into line as verified by X-ray diffraction studies, which they suggest might one day pave the way for cheaper, greener, "paint-on" plastic electronics.

Read More thumbnail image: Paintable electronics Bringing polymers into line

Carbon capture: Porous trap for greenhouse gas

Date: Mar 15, 2013

Author: David Bradley

Scientists at the King Abdullah University of Science and Technology (KAUST) and the University of South Florida (USF), USA, have developed a unique, efficient, cost-effective as well reusable metal-organic framework (MOF) material, for trapping and separating carbon dioxide from various gas streams. These crystalline materials could lead to clean-air and energy-saving technologies.

Read More thumbnail image: Carbon capture Porous trap for greenhouse gas

Journal Highlight: Gilding and pigments of Renaissance marble of Abatellis Palace: non-invasive investigation by XRF spectrometry

Date: Mar 11, 2013

Author: spectroscopyNOW

The chemical composition of pictorial layers and their stratigraphical distribution on renaissance marble sculptures from Abatellis Palace, Palermo, have been characterised by UV-vis fluorescence and XRF measurements.

Read More thumbnail image: Journal Highlight Gilding and pigments of Renaissance marble of Abatellis Palace non-invasive investigation by XRF spectrometry
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