Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Not so easy to imitate nature

19.03.2007
The idea was to solve the problem of de-icing airplane wings. But the result of the research project at Linköping University in Sweden was just the opposite: the possibility of artificially freezing ice at high temperatures.

Biomimetics is the science that tries to imitate nature’s solutions to various problems. One approach is to apply biological principles to the construction of new products, another to copy molecular building blocks for new purposes.

Researchers at the Section for Molecular Physics at Linköping University in Sweden got interested in proteins that exist in fish in polar areas, such as flounders, in order to keep their blood from freezing. Arctic sea water can reach -2 degrees centigrade, a temperature where normal fish would freeze to death.

Doctoral student Annika Borgh started a project to try to utilize properties of these anti-freeze proteins, which exist in two forms: with and without a sugar group attached. The proteins bind to the surface of tiny ‘ice embryos’ and prevent the formation of ice crystals.

... more about:
»Annika »Borgh »Surface »anti-freeze »temperature

In the fish, the protein is loose in the blood, but Annika Borgh wanted to have them on a surface, such as on an airplane wing, where they might be able to prevent the formation of ice, which is a huge problem at airports in winter. But the proteins don’t like being on surfaces, so she developed molecules with sugar and methyl groups, though without the protein skeleton as such. These were applied to a plate with a surface of gold, where they organized themselves in a so-called monolayer.

Water was condensed on the surface, and the plate was chilled. The surprising result was that the water froze at a higher temperature when there were anti-freeze molecules on the surface than when they weren’t there.

“The anti-freeze protein probably functions only in solutions, where it can prevent ice embryos from forming from all directions. Instead, we should be able to make use of the reverse effect, to freeze ice rinks using less energy, for instance, or perhaps to develop a polymer with these properties that can be painted onto a surface,” says Annika Borgh.

Åke Hjelm | alfa
Further information:
http://www.liu.se
http://www.bibl.liu.se/liupubl/disp/disp2007/tek1069s.pdf

Further reports about: Annika Borgh Surface anti-freeze temperature

More articles from Life Sciences:

nachricht Scientists enlist engineered protein to battle the MERS virus
22.05.2017 | University of Toronto

nachricht Insight into enzyme's 3-D structure could cut biofuel costs
19.05.2017 | DOE/Los Alamos National Laboratory

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

Im Focus: Bacteria harness the lotus effect to protect themselves

Biofilms: Researchers find the causes of water-repelling properties

Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...

Im Focus: Hydrogen Bonds Directly Detected for the First Time

For the first time, scientists have succeeded in studying the strength of hydrogen bonds in a single molecule using an atomic force microscope. Researchers from the University of Basel’s Swiss Nanoscience Institute network have reported the results in the journal Science Advances.

Hydrogen is the most common element in the universe and is an integral part of almost all organic compounds. Molecules and sections of macromolecules are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

Innovation 4.0: Shaping a humane fourth industrial revolution

17.05.2017 | Event News

Media accreditation opens for historic year at European Health Forum Gastein

16.05.2017 | Event News

 
Latest News

New approach to revolutionize the production of molecular hydrogen

22.05.2017 | Materials Sciences

Scientists enlist engineered protein to battle the MERS virus

22.05.2017 | Life Sciences

Experts explain origins of topographic relief on Earth, Mars and Titan

22.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>