Featured Research

from universities, journals, and other organizations

Software for the discovery of new crystal structures

Date:
May 11, 2011
Source:
Max-Planck-Gesellschaft
Summary:
A new software program enables electron microscopes to extract more information about the composition of crystals.

A new software program called QED (Quantitative Electron Diffraction), which has been licensed by Max Planck Innovation, has now been released by HREM Research Inc., a Japan based company, which is developing products and services in the field of High-Resolution Electron Microscopy. QED allows transmission electron microscopes to acquire novel kinds of data, opening up new possibilities in electron crystallography.

Related Articles


Transmission electron microscopes create magnified images of samples and are, in contrast to the light microscope, even able to resolve individual atoms. When transmitting a beam of electrons through a crystalline sample such as a complex mineral or a crystallized protein, the electrons are being diffracted in a specific way. Collecting such diffraction patterns of a sample from several different directions uniquely identifies a specific crystal structure.

The new QED software now can control almost any transmission electron microscope to automatically collect so called LARBED (Large-Angle Rocking-Beam Electron Diffraction) patterns. LARBED patterns are composed of a series of diffraction patterns collected for a large range of directions of the electron beam. Although collected for a single specimen orientation such LARBED patterns provide 3-dimensional information and thus enable researchers to better extract information about the structure of crystalline materials in various fields of applications such as materials science, geology and life sciences.

LARBED is a patented procedure, which has been developed by Christoph Koch at the Max Planck Institute for Intelligent Systems (formerly Max Planck Institute for Metals Research) in Stuttgart, Germany. The advantage of LARBED is that it overcomes difficulties caused by multiple scattering of electrons passing through a sample. This dynamical scattering makes it, amongst other things, difficult to analyze the intensities of the diffracted beam when using other methods based on electron diffraction. This leads to the loss of valuable information.

The new software for automated acquisition of LARBED patterns works by controlling the tilt angle and position of a collimated electron beam. The QED software compensates the beam shift with the help of the illumination system of the microscope. Thus data about characteristics from nano-sized samples can be collected. LARBED data contain an enormous amount of information about examined specimen, including specimen thickness, the absolute values of structure factors, the crystal symmetry even of very thin (<10 nm) samples, as well as the specimen surface orientation.


Story Source:

The above story is based on materials provided by Max-Planck-Gesellschaft. Note: Materials may be edited for content and length.


Cite This Page:

Max-Planck-Gesellschaft. "Software for the discovery of new crystal structures." ScienceDaily. ScienceDaily, 11 May 2011. <www.sciencedaily.com/releases/2011/05/110511111953.htm>.
Max-Planck-Gesellschaft. (2011, May 11). Software for the discovery of new crystal structures. ScienceDaily. Retrieved March 1, 2015 from www.sciencedaily.com/releases/2011/05/110511111953.htm
Max-Planck-Gesellschaft. "Software for the discovery of new crystal structures." ScienceDaily. www.sciencedaily.com/releases/2011/05/110511111953.htm (accessed March 1, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Sunday, March 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Rehab Robot Helps Restore Damaged Muscles and Nerves

Rehab Robot Helps Restore Damaged Muscles and Nerves

Reuters - Innovations Video Online (Mar. 1, 2015) A rehabilitation robot prototype to help restore deteriorated nerves and muscles using electromyography and computer games. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Elon Musk's Hyperloop Moves Forward

Elon Musk's Hyperloop Moves Forward

Buzz60 (Feb. 27, 2015) Zipping around at 800-miles an hour is coming closer to reality in California. An entire town is being built around Elon Musk&apos;s Hyperloop concept and it wants you to stop in for a ride when it&apos;s ready. Brett Larson is on board. Video provided by Buzz60
Powered by NewsLook.com
Vibrating Bicycle Senses Traffic

Vibrating Bicycle Senses Traffic

Reuters - Innovations Video Online (Feb. 26, 2015) Dutch scientists have developed a smart bicycle that uses sensors, wireless technology and video to warn riders of traffic dangers. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
In Japan, Robot Dogs Are for Life -- And Death

In Japan, Robot Dogs Are for Life -- And Death

AFP (Feb. 25, 2015) Robot dogs are the perfect pet for some in Japan who go to repairmen-turned-vets when their pooch breaks down - while a full Buddhist funeral ceremony awaits those who don&apos;t make it. Duration: 02:40 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins