Navigation Links
Advance in X-ray imaging shines light on nanomaterials
Date:8/7/2012

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 an increasingly important role in many applications, there is a real need to be able to obtain very high quality three dimensional images of these samples.

"Up until now we have been limited by the quality of our X-rays. Here we have demonstrated that with imperfect X-ray sources we can still obtain very high quality images of nanomaterials."

Up until now, most nanomaterial imaging has been done using electron microscopy. X-ray imaging is an attractive alternative as X-rays penetrate further into the material than electrons and can be used in ambient or controlled environments.

However, making lenses that focus X-rays is very difficult. As an alternative, scientists use the indirect method of coherent diffraction imaging (CDI), where the diffraction pattern of the sample is measured (without lenses) and inverted to an image by computer.

Nobel Prize winner Lawrence Bragg suggested this method in 1939 but had no way to determine the missing phases of the diffraction, which are today provided by computer algorithms.

CDI can be performed very well at the latest synchrotron X-ray sources such as the UK's Diamond Light Source which have much higher coherent flux than earlier machines. CDI is gaining momentum in the study of nanomaterials, but, until now, has suffered from poor image quality, with broken or non-uniform density. This had been attributed to imperfect coherence of the X-ray light used.

The dramatic three-dimensional images of gold nanocrystals presented in this study demonstrate that this distortion can be corrected by appropriate modelling of the coherence function.

Professor Ian Robinson, London Centre for Nanotechnology and author of the paper said: "The corrected images are far more interpretable that ever obtained previously and will likely lead to new understanding of structure of nanoscale materials."

The method should also work for free-electron-laser, electron- and atom-based diffractive imaging.


'/>"/>

Contact: Clare Ryan
clare.ryan@ucl.ac.uk
44-020-310-83846
University College London
Source:Eurekalert

Related biology technology :

1. Avaxia Biologics, Inc. Raises $2.2 Million in First Closing of Series A Financing to Advance Oral Antibodies for Inflammatory Bowel Disease
2. A light wave of innovation to advance solar energy
3. "Sitting Ducks" No Longer: Advance Flu Warning Permits Creation of Replikins Custom Synthetic Flu Vaccine in Animals
4. Hologic to Showcase 3D Mammography (Breast Tomosynthesis) and Other Advanced Womens Imaging Technologies at RSNA 2011, the Largest Radiology Show in the World
5. Roche NimbleGen and BGI Develop Advanced MHC Region Capture Technology for Human Disease and Biomedical Research
6. Roche Signs Agreement with PTC Therapeutics to Advance Treatment for Spinal Muscular Atrophy (SMA)
7. Novartis Highlights Advances for Patients With Breast Cancer and Hematological Diseases With Over 160 SABCS and ASH Abstracts
8. Idenix Reports Advancement of HCV Development Pipeline
9. Elsevier Foundation Awards 2011 Grants to Advance Women in Science and Support Libraries in Developing Countries
10. Argos Therapeutic Arcelis™ Immunotherapy AGS-003 in Combination With Sunitinib Shows Statistically Significant Correlation of Immune System Response to Overall Survival in Phase 2 Study in Patients with Advanced Renal Cell Carcinoma (RCC)
11. Accelerate Brain Cancer Cure and Exosome Diagnostics Collaborate to Advance Clinical Studies of Exosome Biofluid Molecular Diagnostics Technology in Brain Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/16/2017)... ... 2017 , ... Tunnell Consulting announced today that four of the ... Meeting and Expo , to be held October 29 through November 1 in San ... to advance patient therapies.” , The ISPE Annual Meeting and Expo will feature several ...
(Date:8/16/2017)... ... , ... While art and science are often thought of as two completely ... A Mesh Is Also a Snare, a group exhibition presented by the Philadelphia-based ... Gallery (EKG) on August 17 and run through September 30. An opening reception will ...
(Date:8/16/2017)...  This year,s edition of the Inc. 5000 features a now-familiar name: ... has made the list for the third year in a row. Now ... companies based on a set of quantitative metrics. In addition, BioPoint was ... in the Bay State . ... Inc. 5000 ...
(Date:8/15/2017)... ... August 15, 2017 , ... Kapstone Medical ... years of successes helping medical technology companies and inventors develop and safeguard their latest ... full-service national engineering firm with a portfolio of clients in the United States and ...
Breaking Biology Technology:
(Date:4/11/2017)... DUBLIN , Apr. 11, 2017 Research ... Tracking Market 2017-2021" report to their offering. ... The global eye tracking market to grow at ... The report, Global Eye Tracking Market 2017-2021, has been prepared based ... report covers the market landscape and its growth prospects over the ...
(Date:4/11/2017)... Florida , April 11, 2017 ... a security technology company, announces the appointment of independent Directors ... Bendheim to its Board of Directors, furthering the company,s ... ... of NXT-ID, we look forward to their guidance and benefiting ...
(Date:4/5/2017)... April 5, 2017  The Allen Institute for Cell ... Explorer: a one-of-a-kind portal and dynamic digital window into ... data, the first application of deep learning to create ... cell lines and a growing suite of powerful tools. ... these and future publicly available resources created and shared ...
Breaking Biology News(10 mins):