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Latest Coherent diffraction imaging Stories

Gold Nanocrystal Vibration Captured On Billion-frames-per-second Film For First Time
2013-05-24 07:22:10

[ Watch The Video Movie of 3D Image of a Gold Nanocrystal ] University College London The film, which was made using 3D imaging pioneered at the London Centre for Nanotechnology (LCN) at UCL, reveals important information about the composition of gold. The findings are published in the journal Science. Jesse Clark, from the LCN and lead author of the paper said: "Just as the sound quality of a musical instrument can provide great detail about its construction, so too can the...

2012-08-13 14:55:35

For the first time X-ray scientists have combined high-resolution imaging with 3-D viewing of the surface layer of material using X-ray vision in a way that does not damage the sample. This new technique expands the range of X-ray research possible for biology and many aspects of nanotechnology, particularly nanofilms, photonics, and micro- and nano-electronics. This new technique also reduces "guesswork" by eliminating the need for modeling-dependent structural simulation often used in...

2012-08-07 23:29:52

A new advance in X-ray imaging has revealed the dramatic three-dimensional shape of gold nanocrystals, and is likely to shine a light on the structure of other nano-scale materials. Described today in Nature Communications, the new technique improves the quality of nanomaterial images, made using X-ray diffraction, by accurately correcting distortions in the X-ray light. Dr Jesse Clark, lead author of the study from the London Centre for Nanotechnology said: "With nanomaterials playing...

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2010-04-28 07:21:23

X-ray diffraction microscopy provides the best resolution yet A team of scientists working at beamline 9.0.1 of the Advanced Light Source (ALS) at the U.S. Department of Energy's Lawrence Berkeley National Laboratory has used x-ray diffraction microscopy to make images of whole yeast cells, achieving the highest resolution"”11 to 13 nanometers (billionths of a meter)"”ever obtained with this method for biological specimens. Their success indicates that full 3-D tomography of whole...

2009-12-07 19:42:40

Sharper vision for new insights into biological questions, including DNA repair An ultra-high-resolution imaging technique using X-ray diffraction is a step closer to fulfilling its promise as a window on nanometer-scale structures in biological samples. In the Proceedings of the National Academy of Sciences, researchers report progress in applying an approach to "lensless" X-ray microscopy that they introduced one year ago. They have produced the first images, using this technique, of...

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2009-02-19 10:14:45

A new imaging technique developed by researchers at the University of Illinois overcomes the limit of diffraction and can reveal the atomic structure of a single nanocrystal with a resolution of less than one angstrom (less than one hundred-millionth of a centimeter). Optical and electronic properties of small assemblages of atoms called quantum dots depend upon their electronic structure "“ not just what's on the surface, but also what's inside. While scientists can calculate the...

2008-03-13 15:00:33

U.S. scientists have developed a technique that can characterize the atomic structure of gold and other nanocrystalline materials. Without the necessary structural information, our understanding of nanocrystals has been limited to models that often treat the surface of a nanocrystal as an extension of a bulk crystalline surface, said University of Illinois Professor Jian-Min Zuo, the study's corresponding author. Zuo and colleagues used a technique they developed called nano-area coherent...

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2008-03-11 09:35:00

In the hands of jewelers, gold can be fashioned into rings and pendants of long-lasting beauty. But, when reduced in size to nanocrystals containing a few thousand atoms, this noble metal is a surprisingly good catalyst. Finding the key to gold's chemical reactivity (or that of any metal nanocrystal) has been difficult, as few measurement techniques work at the nanoscale. Now, researchers at the University of Illinois have demonstrated a sensitive probe that can identify and characterize the...


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malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'