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Home > Press > University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions

Researchers at The University of Akron have discovered that a thin layer of water (blue molecules ) between two charged surfaces composed of surfactants (green molecules) --becomes ice-like, lessening the friction between the two surfaces.
CREDIT: The University of Akron
Researchers at The University of Akron have discovered that a thin layer of water (blue molecules ) between two charged surfaces composed of surfactants (green molecules) --becomes ice-like, lessening the friction between the two surfaces.

CREDIT: The University of Akron

Abstract:
New research by scientists at The University of Akron (UA) shows that a nanometer-thin layer of water between two charged surfaces exhibits ice-like tendencies that allow it to withstand pressures of hundreds of atmospheres. The discovery could lead to better ways to minimize friction in a variety of settings.

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions

Akron, OH | Posted on August 30th, 2016

Why water between two surfaces does not always simply squeeze out when placed under severe pressure had never been fully understood. The UA researchers discovered that naturally-occurring charges between two surfaces under intense pressure traps the water, and gives it ice-like qualities. It is this ice-like layer of water--occurring at room temperature--that then lessens the friction between the two surfaces.

"For the first time we have a basic understanding of what happens to water under these conditions and why it keeps two surfaces apart," says Professor Ali Dhinojwala. "We had suspected something was happening at the molecular level, and now we have proof."

"This discovery could lead to improved designs where low friction surfaces are critically important, such as in biomedical knee implants," says UA graduate student Nishad Dhopatkar.

Graduate student Adrian Defante, who was also part of the research team, says "the newfound properties of water might contribute to the development of more effective antimicrobial coatings, as a thin layer of water could prevent bacterial adhesion."

Dhinojwala adds that the research conversely offers insight into how water might be kept away from two surfaces, which could lead to better adhesives in watery environments.

The study by Dhinojwala and his team can be found in the current issue of Science Advances.

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Dan Minnich

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