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Science News. Glassy water Led by Professors Raffaele Mezzenga and Ehud Landau, a group of physicists and chemists from ETH Zurich and the University of Zurich have now identified an unusual way to prevent water from forming ice crystals, so even at extreme sub-zero temperatures it retains the amorphous characteristics of a liquid.
No space for water crystals What's so special about this structure is that -- unlike in an ice-cube tray -- there is no room in the narrow channels for water to form ice crystals, so it remains disordered even at extreme sub-zero temperatures. Landau, Raffaele Mezzenga. Soft biomimetic nanoconfinement promotes amorphous water over ice. Nature Nanotechnology , ; DOI: ScienceDaily, 10 April ETH Zurich. Water that never freezes. Retrieved October 25, from www.
In contrast to many earlier organic magnets, the molecules were stable in the presence of water and oxygen. Their magnetic properties were It is called supercooled water and is present in refrigerators.
At even smaller temperatures, supercooled water could exist And scientists have long observed that when water is confined in Similar Puzzles. What kind of can never needs a can-opener?
What kind of band never plays music? What kind of flowers you never give on Valentine's Day? There is a kind of fish that can never swim. The researchers modelled the new class of lipids on membranes of certain bacteria. These bacteria also produce a special class of self-assembling lipids that can naturally confine water in their interior, enabling the microorganisms to survive in very cold environments. These new lipidic mesophases will serve primarily as a tool for other researchers.
They can be utilised to non-destructively isolate, preserve and study large biomolecules in a membrane-mimicking environment, for instance by using cryogenic electron microscopy. Biologists are increasingly turning to this method to determine the structures and functions of large biomolecules such as proteins or large molecular complexes. But not with the new mesophase, which is non-destructive and preserves such molecules in their original state and in presence of the other key building block of life, that is the lipids.
This new class of soft matter could also be employed in potential applications wherever water must be prevented from freezing. Explore further. Use this form if you have come across a typo, inaccuracy or would like to send an edit request for the content on this page. For general inquiries, please use our contact form. For general feedback, use the public comments section below please adhere to guidelines.
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Home Nanotechnology Nanophysics. April 10, Three-dimensional model of the novel lipid mesophase: This cubic motif is repeated regularly in the material.
The lipids form net-like branched membranes which enclose water light blue. Credit: P. More information: Livia Salvati Manni et al. Soft biomimetic nanoconfinement promotes amorphous water over ice, Nature Nanotechnology DOI: Provided by ETH Zurich.
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