Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers want to accelerate the scanning probe microscope

01.04.2010
Since more than twenty years, scanning force microscopes are employed in research and industry. Their enormous resolution triggered many applications in nanotechnology. Their rather low image rate is however a disadvantage - changing objects and processes cannot be imaged.

Physicists of Saarland University have developed a technology that could accelerate scanning probe microscopes by a factor of 1000. The operation principle is explained from April 17th to 23rd on the Saarland Forschungsstand on the Hannover Messe (Halle 2, Stand C 44).

A scanning probe microscope works like a record player. There, a needle follows the record track, mapping the fine structure of the track. The microscope uses a much smaller silicon needle instead, and direct contact with the surface is avoided. Surface structures are mapped by atomic forces, usually van-der-Waals interactions. "Even though the needle is tiny, there are still physical limits. Therefore we were looking for a component that is again a factor of 100 smaller than those used currently" explains Uwe Hartmann, Professor for Nanostructure Reasearch and Nanotechnology at Saarland University. With the nanocantilever, as it is called, surfaces will be mapped a lot faster and with higher precision.

State-of-the-art scanning probe microscopes operate at frequencies around 100 Kilohertz. "The processes nanotechnology is dealing with, however, have typical frequencies of gigahertz. These are one billion cycles per second. On the other hand, the velocity by which a hair is growing may well disturb the imaging process." Such are the dimensions of nanoresearch, as Uwe Hartmann describes. With his team's design, one hundred images per second and more and an increase in resolution will be possible. This is more than video rate.

The detector for the movements of the nanocantilever is separated from the nanocantilever by less than the wavelength of light, just one-fivehundredth of a hair's diameter. The result is a mapping of the surface with superior speed and precision.

In cooperation with partners a prototype of the new scanning force microscope is currently set up currently, for which is also patent application is intended. Until the end of the year the device, which uses only standard materials of microelectronics, will operate. The researchers are now looking for an industry partner. "On the Hannover Messe we will not show an exhibit. However we will demonstrate the principle of the scanning force microscope in a three-dimensional visualization" the researcher from Saarbrücken explains.

Adress questions to

Prof. Dr. Uwe Hartmann
Lehrstuhl für Nanostrukturforschung und Nanotechnologie
Universität des Saarlandes
Tel. 0681 / 302 3799
Tel. 0511 / 89 497101 (Telefon am Messestand)
E-Mail: u.hartmann@mx.uni-saarland.de
Telephone interviews in studio quality with scientists of Saarland University in studio quality are possible over Rundfunk-ISDN-Codec. Interview requests please contact the public relations office (0681/302-3610)

Gerhild Sieber | idw
Further information:
http://www.uni-saarland.de/fak7/hartmann/
http://www.uni-saarland.de/pressefotos

More articles from Power and Electrical Engineering:

nachricht Researchers pave the way for ionotronic nanodevices
23.02.2017 | Aalto University

nachricht Microhotplates for a smart gas sensor
22.02.2017 | Toyohashi University of Technology

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>