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May 16th, 2005

Nanotube water doesn't freeze

Abstract:
A new form of water has been discovered by physicists in Argonne's Intense Pulsed Neutron Source (IPNS) Division. Called nanotube water, these molecules contain two hydrogen atoms and one oxygen atom but do not turn into ice — even at temperatures near absolute zero.

Instead, inside a single wall tube of carbon atoms less than 2 nanometers, or 2 billionths of a meter wide, the water forms an icy, inner wall of water molecules with a chain of liquid-like water molecules flowing through the center. This occurs at 8 Kelvins, which is minus 509 Fahrenheit. As the temperature rises closer to room temperature, the nanotube water gradually becomes liquid.

Source:
ANL

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