Navigation Links
Latest issue of Science: Nanosonar uses electrons to measure under the surface
Date:3/2/2009

Jlich, 27 February 2009 Just as sonar sends out sound waves to explore the hidden depths of the ocean, electrons can be used by scanning tunnelling microscopes to investigate the well-hidden properties of the atomic lattice of metals. As researchers from Gttingen, Halle and Jlich now report in the high-impact journal "Science", they succeeded in making bulk Fermi surfaces visible in this manner. Fermi surfaces determine the most important properties of metals.

"Fermi surfaces give metals their personality, so to speak," explained Prof. Stefan Blgel, Director at the Jlich Institute of Solid State Research. Important properties, such as conductivity, heat capacity and magnetism, are determined by them. On the Fermi surfaces inside the atomic union, high-energy electrons are in motion. Depending on what form the surfaces have and what mobility is assigned to the electrons, they determine the physical properties of metals.

microscope."

In their latest publication, the researchers report on how they used a scanning tunnelling microscope to direct electrons into a copper sample. As electrons spread out like waves, they pass through the metal and are scattered and reflected at obstacles in the bulk, such as single cobalt atoms. "The overlap between incoming and outgoing waves is so strong," said Dr. Samir Lounis from Forschungszentrum Jlich who turned the theoretical calculations into an experiment, "that they can be measured as spherical patterns on the surface using the scanning tunnelling

The somewhat deformed rings on the surface allow us to draw direct conclusions on the shape of the Fermi surfaces and the depth of the cobalt atoms, similar to how sonar recognises the ocean floor by means of reflected sound waves. "We hope that more sophisticated methods will make it possible to gain a detailed understanding of deep impurities and interfaces between atomic lattices," explained Lounis. For his simulations of the scanning t
'/>"/>

Contact: Kosta Schinarakis
k.schinarakis@fz-juelich.de
49-246-161-4771
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Latest issue of Science: Nano-sonar uses electrons to measure under the surface
2. Jatropha Sector Reality Check: Still Viable In Volatile Times? Upcoming Webcast Shares Latest Insights
3. European Nephrologists Share Insights on the Management of Renal Anemia and Hyperphosphatemia in Latest BioTrends Report
4. MicroPhage Closes Latest Financing
5. Can Algae Biofuels Satisfy the World's Growing Biofuel Needs? Upcoming Webinar Shares the Latest Commercialization Strategies and Challenges
6. EUPROBIO 2008 Presentation to Highlight Latest Immune Research
7. Latest Sleep Disorder Technology Tested With SleepQuest
8. [video] Jacques Tizabi, CEO of Universal Detection Technology Discusses Latest Purchase Order on WallSt.nets 3-Minute Press Show
9. Rudd Report Highlights AMDL, Inc.s Latest Business Achievements; Supports 2008 Financial Guidance
10. Carbon nanotube measurements: latest in NIST how-to series
11. Parks Associates Digital Health Analyst to Present Latest Research and Forecasts at ATA Show
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Latest issue of Science: Nanosonar uses electrons to measure under the surface
(Date:7/2/2015)... , July 2, 2015 Amici ... Bio-tech procurement company Amici Procurement has chosen Microsoft Cloud ... it move to Office 365.      (Logo: ... small to medium-sized companies in the bio-tech sector with ... of the purchasing cycle to help them obtain best ...
(Date:7/2/2015)... (PRWEB) , ... July 02, 2015 , ... ... development and manufacturing of surgical instruments in Orthopedics, announced today the acquisition of ... and the world's largest provider of surgical instruments to the Spine Industry. The ...
(Date:7/1/2015)... PARIS , July 1, 2015 ... key developer of biotech crops, today announce a ... generations of insect control traits. "Growers ... the realities of advancing insect resistance. We are ... insect control technology with Genective,s capability in developing ...
(Date:7/1/2015)... ... July 01, 2015 , ... The next-generation sequencing (NGS) ... market segments, including the molecular diagnostics industry. BCC Research reveals in its new report ... tests, lower test costs, and a growing need for better diagnostics as part of ...
Breaking Biology Technology:Biotech Procurement Company Moves to Office 365 with iomart 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 3AgBiome and Genective collaborate to create novel insect-resistant crops 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3
... September 10 Elsevier,a leading publisher of scientific, technical ... become one of the Charter Members of the,InChI Trust ... the first InChI Trust Board,meeting on September 11th. , ... Union of Pure and Applied,Chemistry (IUPAC), the IUPAC International ...
... , ROTTERDAM, The Netherlands, September 10 ... development of human,antibodies using its proprietary SIMPLE Antibody(TM) platform, today,announced ... The Company raised EUR 9.5million ( USD 13.6 million) from ... one of,the largest of its kind in the last 12 ...
... James Tour have brought graphite,s potential as a mass ... created the potential for reprogrammable gate arrays that could ... In a paper published in the online ... Alexander Sinitskii show how they,ve used industry-standard lithographic techniques ...
Cached Biology Technology:Elsevier Joins InChI Trust as a Charter Member 2Elsevier Joins InChI Trust as a Charter Member 3Elsevier Joins InChI Trust as a Charter Member 4arGEN-X Raises EUR9.5 Million to put SIMPLE Antibody(TM) Platform to Work 2arGEN-X Raises EUR9.5 Million to put SIMPLE Antibody(TM) Platform to Work 3arGEN-X Raises EUR9.5 Million to put SIMPLE Antibody(TM) Platform to Work 4arGEN-X Raises EUR9.5 Million to put SIMPLE Antibody(TM) Platform to Work 5Graphitic memory techniques advance at Rice 2Graphitic memory techniques advance at Rice 3
(Date:6/17/2015)... , and HILDEN, Germany , June ... QGEN ; Frankfurt Prime Standard: QIA) today launched new Investigator ... in forensic laboratories in the United States ... to simultaneously analyze multiple key genomic markers (short tandem repeats ... Quality Sensor to evaluate the quality of DNA in ...
(Date:6/16/2015)... Fingerprint Cards has received an order ... company,s portfolio from one of its module partners in ... place during the third quarter 2015. The sensors will be ... Jörgen Lantto, CEO of FPC, comments: " This ... interest from smartphone OEMs in integrating touch fingerprint sensors in ...
(Date:6/12/2015)... DALLAS , June 12, 2015  Securus ... justice technology solutions for public safety, investigation, corrections ... issued its patent to electronically capture, analyze and ... various facial recognition methods. This system ... authorized by an enrollment and subsequent sign-on process ...
Breaking Biology News(10 mins):QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 4QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 5FPC Receives Order for Touch Fingerprint Sensors of 375 MSEK 2Securus Announces Patent Issued for Authorized Presence Verification During Video Visitation 2
... mice responsible for repairing DNA strands damaged by oxidation ... that such stress contributes to the development of cancer. ... DNA Repair by researchers at the National Institute ... University (OHSU) and the New York University School of ...
... measure organic contaminants in human body fluids, the National ... four new Standard Reference Materials (SRMs) available for purchase. ... and Prevention (CDC), the human milk and serum SRMs ... pesticides, commonly found in the U.S. population. Scientists at ...
... Netherlands: For the first time, researchers have been able ... of IVF treatment in blood. Dr. Cathy Allen, from the ... the European Society of Human Reproduction and Embryology today (Wednesday ... works for some patients but not for others. Previous ...
Cached Biology News:Genetically engineered mice yield clues to 'knocking out' cancer 2NIST issues human milk and blood serum SRMs for contaminant measurements 2Will IVF work for a particular patient? The answer may be found in her blood 2Will IVF work for a particular patient? The answer may be found in her blood 3
... is a fully licensed, high throughput, water bath ... up to 24 microplates. This equates to 9,216 ... ,A robotic arm rapidly transfers a basket of ... ramping times that are considerably faster than those ...
... Ribonuclease is a 27kDa periplasmic enzyme from ... RNA to cyclic nucleotide monophosphate (NMP) intermediates. ... these intermediates to 3-NMPs (1). RNase ONE ... RNases that can cleave a phosophodiester bond ...
... to Dideoxycytidine Dideoxycytidine is a cytidine analog ... inhibiting retroviral activity. Immunogen: Chemical ... Specificity: The specificity of the ddC antiserum ... moles of ddC to moles of ddC analog ...
Porcine Pulmonary Artery Endothelial Cells (PPAEC) (>500,000 cells)...
Biology Products: