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Drugs enmeshed: Superhydrophobic slow delivery

Date: Feb 15, 2012

Author: David Bradley

X-ray computed tomography can be used to look closely at superhydrophobic polymer meshes. These experimental materials have been shown to trap drug molecules with a barrier of air between them and an external aqueous environment.

Read More thumbnail image: Drugs enmeshed Superhydrophobic slow delivery

Journal Highlight: Global and local hard X-ray tomography of a centimeter-size tumor vessel tree

Date: Feb 13, 2012

Author:

Adaptation of local tomography data using the global data has been demonstrated using two-parameter histogram matching of the radiographs, sinogram extension, and multi-parameter cupping correction.

Read More thumbnail image: Journal Highlight Global and local hard X-ray tomography of a centimeter-size tumor vessel tree

Recycling platinum: An ionic liquid solution

Date: Feb 1, 2012

Author: David Bradley

Analyses using energy dispersive spectrometry (EDS) and X-ray diffraction have been used to investigate the electrochemical dissolution of platinum in an ionic liquid. Given the high value of platinum metal and its widespread use in catalysts and fuel cells this discovery could fulfil the growing need for an efficient way to recycle the metal.

Read More thumbnail image: Recycling platinum An ionic liquid solution

Journal Highlight: Disputed discovery: the beginnings of X-ray diffraction in crystals in 1912 and its repercussions

Date: Jan 16, 2012

Author:

The discovery of X-ray diffraction is reviewed from the perspective of the contemporary knowledge in 1912 about the nature of X-rays, including the disputes between the principle players.

Read More thumbnail image: Journal Highlight Disputed discovery the beginnings of X-ray diffraction in crystals in 1912 and its repercussions

Editor exposed: XRD provides evidence

Date: Jan 15, 2012

Author: David Bradley

A combination of traditional X-ray crystallography and computer-based model reported in the journal Science have uncovered the structure of an important gene-editing protein.

Read More thumbnail image: Editor exposed XRD provides evidence

Close packing: Flexible boost for electronics

Date: Jan 5, 2012

Author: David Bradley

US reserchers have found that packing organic semiconductors closer together can boost the materials' electrical conductivity. X-ray diffractions studies reveal structural details that take us one step closer to more efficient solar energy panels, better television and computer screens and perhaps even flexible electronic gadgets.

Read More thumbnail image: Close packing Flexible boost for electronics

Theoretical crystal: Density functional theory reveals amino acid structure

Date: Dec 15, 2011

Author: David Bradley

Is it possible to obtain a structure using solid-state density functional theory on powder X-ray diffraction data of molecular crystals when those molecules are too large and complex for conventional refinement methods? The approach has now been applied to obtain the true crystal structure of the amino acid L-phenylalanine.

Read More thumbnail image: Theoretical crystal Density functional theory reveals amino acid structure

Journal Highlight: Evaluation of the utility of handheld XRF in meteoritics

Date: Dec 12, 2011

Author:

A handheld X-ray fluorescence instrument was tested in the hot desert of Oman while searching for meteorites and also in the laboratory while doing research on meteorites. Its main applications are the identification and classification of meteorites, the quantification of terrestrial elemental contamination (Sr and Ba) and detection of Mn-rich desert varnish.

Read More thumbnail image: Journal Highlight Evaluation of the utility of handheld XRF in meteoritics

Super, cool: Liquid, crystal

Date: Dec 1, 2011

Author: David Bradley

A team in Salt Lake City has demonstrated why water can remain in the liquid state even if it is cooled as low as 13 degrees Celsius below its normal freezing point. However, their research also suggests that it is impossible to maintain supercooled water as a liquid at below this temperature.

Read More thumbnail image: Super cool Liquid crystal

Absorbing oxygen: Understanding enzymes

Date: Nov 15, 2011

Author: David Bradley

New clues as to why oxygen becomes the undoing of hydrogenase enzymes has emerged from X-ray absorption spectroscopy studies carried out at the Swiss Light Source.

Read More thumbnail image: Absorbing oxygen Understanding enzymes
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