Navigation Links
Improved X-ray microscopic imaging

This release is available in German.

X-ray microscopy requires radiation of extremely high quality. In order to obtain sharp images instrument and sample must stay absolutely immobile even at the nanometer scale during the recording. Researchers at the Technische Universitaet Muenchen and the Paul Scherrer Institute in Villigen, Switzerland, have now developed a method that relaxes these hard restrictions. Even fluctuations in the material can be visualized. The renowned journal Nature now reports on their results.

For more than 100 years radiography meant: don't move! In order to visualize nanostructures such as biological cells, the porous structure of cement or storage fields of magnetic disks, the experimentators had to avoid any kind of vibration of X-ray microscope and sample. In addition, only a small percentage fraction of the incoming X-ray radiation could be used. Using special filters, they had to select exactly the fraction with the right properties for example, the right wavelength.

Contributions of different wavelengths separated

Pierre Thibault of the Technische Universitaet Muenchen and Andreas Menzel, scientist at the Paul Scherrer Institute (Villigen, Switzerland) have now developed an interpretation method that produces reliable images in spite of vibrations or fluctuations. The method is based on a technique called "ptychography", developed in the 1960s for electron microscopy. Thibault and Menzel's advancements now make it possible to distinguish effects originating from the contribution of different types of X-ray waves.

Fluctuations visualized

Probably the most significant result of the study is that it gives access to a whole class of objects that previously could hardly be investigated. "We now not only can compensate for the vibrations in the microscope," says Andreas Menzel. "We can even characterize fluctuations of the sample itself, even if they are much too fast to be seen with individual snapshots."

"We needed to convince ourselves that the images we produced did indeed reflect accurately the samples and their dynamics," says Pierre Thibault. "So we carried out computer simulations. They confirmed that effects of the instrument as well as of the sample itself, such as flows, switching events or mixed quantum states, can be characterized."

Microscopic view inside

The new method combines the characterization of dynamical states with high-resolution X-ray microscopy. One possible application is to analyze the changing magnetization of individual bits in magnetic storage media with high storage density. The interactions of such single magnetic bits or their thermal fluctuations, which ultimately determine the lifetime of magnetic data storage, could be visualized.

"In addition to its use in imaging," explains Pierre Thibault, "our analysis method also reveals a fundamental relationship to other disciplines: Microscopy and scientific disciplines such as quantum computing, previously regarded as independent, can benefit from each other here."


Contact: Andreas Battenberg
Technische Universitaet Muenchen

Related biology news :

1. Improved Authentication and Confidentiality Protection. ICAP Patent Brokerage Announces for Auction Important Patents in Data Encryption and Document Security
2. Some improved cookstoves may emit more pollution than traditional mud cookstoves
3. Improved loblolly pines better for the environment, study finds
4. Early detection techniques offer hope for improved outcomes in lung cancer patients
5. Trial seeks improved lung-cancer screening by combining imaging and biomarkers
6. A trained palate: Understanding complexities of taste, smell could lead to improved diet
7. How alert hospital employees improved hospitals MSRA infection rate
8. 3-D motion of cold virus offers hope for improved drugs using Australias fastest supercomputer
9. Ship-borne measurements show EU policies have improved air quality in harbors
10. Glass offers improved means of storing UKs nuclear waste
11. Nutrition tied to improved sperm DNA quality in older men
Post Your Comments:
Related Image:
Improved X-ray microscopic imaging
(Date:11/17/2015)... , November 17, 2015 ... au 19 novembre  2015.  --> Paris ... --> DERMALOG, le leader de l,innovation biométrique, ... la fois passeports et empreintes sur la même surface ... les passeports et l,autre pour les empreintes digitales. Désormais, ...
(Date:11/16/2015)... Nov 16, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced expansion of its TDDI product ... touch controller and display driver integration (TDDI) solutions ... These new TDDI products add to the previously-announced ... TD4302 (WQHD resolution), and TD4322 (FHD resolution) solutions. ...
(Date:11/12/2015)... 11, 2015   Growing need for low-cost, ... has been paving the way for use of ... discrete analytes in clinical, agricultural, environmental, food and ... used in medical applications, however, their adoption is ... to continuous emphasis on improving product quality and ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... Dec. 1, 2015 Frost & Sullivan ... This program addresses ways companies can innovate and ... --> ... --> ... as well as the disrupting factors altering the ...
(Date:12/1/2015)... ... December 01, 2015 , ... Park Systems , world ... scanning ion conductance microscopy module to Park NX10 that is the only product ... SICM benefits virtually all materials characterization that require measurements in liquid such as ...
(Date:12/1/2015)... December 1, 2015 Dr. Harry Lander , President of ... as Chief Science Officer and recruits five distinguished ... Lander , President of Regen, expands his role to include ... recruits five distinguished scientists to join advisory team ... expands his role to include serving as ...
(Date:11/30/2015)... (PRWEB) , ... November 30, 2015 , ... Global ... and development stages of a new closed system for isolating adipose-derived stem cells. The ... vascular fraction (SVF) of adipose tissue. SVF is a component of the lipoaspirate obtained ...
Breaking Biology Technology: