Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Pioneering research seeks to harness force of nature

15.11.2007
A University of Leicester team’s work will assist in creation of nanomachines.

A pioneering team from the University of Leicester is seeking to harness a force of nature- only measured accurately a decade ago – to help develop the technology of tomorrow.

Their work will have applications in what is considered to be science fiction where miniscule submarine-type machines might be used to destroy cancer cells.

The research group is believed to be the only group in the UK carrying out Casimir force measurements of smooth and patterned surfaces and assessing the utility of the force for nanotechnology.

The research arises from the quantum fluctuations of vacuum, part of quantum field theory, which at present is the universal theory describing the behaviour of all quantum particles.

The Casimir force is a subtle consequence of the vacuum fluctuations, which can be directly measured using the tools of nanotechnology, specifically atomic force microscopes.

Results of the research may lead to frictionless bearings and may solve one of the fundamental problems in nanomachines.

The research, led by Chris Binns, Professor of Nanoscience in the Department of Physics and Astronomy, is not only of fundamental interest. It is hoped that it will be able to harness the Casimir force as a way of transmitting force without contact in nanomachines, ie machines with components approaching the size of molecules.

He said: “Generally nanomachines are science fiction and so it is up to the imagination about what they could do but one of the most talked about potential use is in medical applications where submarine type machines might be used to identify cancer cells and destroy them.”

Normally in such machines the Casimir force is a problem, because at the small distances between components the force is quite strong and generates a fundamental ‘stickiness’ to everything, which is impossible to remove.

Professor Binns’ research is trying to turn the problem on its head, and to utilise the Casimir force as a useful way of transmitting force without contact, for example patterning surface to produce the lateral force in which one patterned surface can drag another one in the same direction.

The force was first accurately measured about 10 years ago and nanoscientists are currently trying to find ways to modify and use it, for instance in lateral force.

Professor Binns commented: “The research is at a fundamental level, so at this stage we only hope to determine how the force varies between surfaces composed of different materials and how patterning the surface changes it. Also, we want to measure the magnitude of the lateral force between surfaces.

“One new area we are starting to look at, however, is to measure the force between a normal material and a ‘metamaterial’. A metamaterial is a surface with a designed nanoscale patterning that gives strange optical properties.

“There are indications that with the right sort of patterning it may be possible to reverse the force to produce repulsion. This would have huge technological repercussions and lead to, for example, frictionless bearings, as well as getting rid of the stickiness problem in nano-machines.

“This is exciting research because it is controversial. Not everybody believes that a repulsive force is possible.”

Ather Mirza | alfa
Further information:
http://www.le.ac.uk

More articles from Physics and Astronomy:

nachricht Astronomers find unexpected, dust-obscured star formation in distant galaxy
24.03.2017 | University of Massachusetts at Amherst

nachricht Gravitational wave kicks monster black hole out of galactic core
24.03.2017 | NASA/Goddard Space Flight Center

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Northern oceans pumped CO2 into the atmosphere

27.03.2017 | Earth Sciences

Fingerprint' technique spots frog populations at risk from pollution

27.03.2017 | Life Sciences

Big data approach to predict protein structure

27.03.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>