Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

3D Atomic Imaging by Internal-Detector Electron Holography

05.09.2011
Researchers succeed to produce 3D atomic imaging of photoelectron holography.

Institute for Materials Research (IMR) of Tohoku University, HORIBA Limited, and Tohoku Techno Arch Company, Limited announced on July 19, 2011 that a research group led by associate professor of IMR, Kouichi Hayashi has succeeded in 3D atomic imaging by a time-inverted version of photoelectron holography. Details were published in Physical Review Letters*.

Determination of atomic arrangement in a material will be an important step to understand its properties and to create novel advanced materials. The research group constructed an apparatus for internal-detector electron holography based on a scanning electron microscope (SEM).

Using an energy-dispersive x-ray detector, an electron gun, and a computer-controllable sample stage, a multiple-energy hologram of the atomic arrangement around the Ti atom in SrTiO3 is obtained by recording the characteristic Ti Ká x-ray spectra for different electron beam angles and wavelengths.

A real-space image was obtained by using a fitting-based reconstruction algorithm SPEA-MEM. 3D atomic images of the elements Sr, Ti, and O in SrTiO3 were clearly visualized. Broadening of O-atom image is observed to show O-atom fluctuation, suggesting the ability of the present method for providing advanced information on the atomic structure analysis.

*Akio Uesaka, Kouichi Hayashi, Tomohiro Matsushita, and Shigetoshi Arai, "3D Atomic Imaging by Internal-Detector Electron Holography", Physical Review Letters, Vol. 107, No. 3, p. 045502 (2011) [4 pages]. Doi: 10,113/PhysRevLett.107.045502; published 19 July 2011.

This article first appeared in the August 2011 issue of Nanotech Japan Bulletin

Mikiko Tanifuji | Research asia research news
Further information:
http://www.tohoku.ac.jp/english/2011/07/press20110722-01.html
http://www.researchsea.com

Further reports about: Atomic Electron IMR Internal-Detector O-atom SrTiO3 algorithm holography

More articles from Materials Sciences:

nachricht Researchers devise microreactor to study formation of methane hydrate
23.08.2017 | NYU Tandon School of Engineering

nachricht Meter-sized single-crystal graphene growth becomes possible
22.08.2017 | Science China Press

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

What the world's tiniest 'monster truck' reveals

23.08.2017 | Life Sciences

Treating arthritis with algae

23.08.2017 | Life Sciences

Witnessing turbulent motion in the atmosphere of a distant star

23.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>