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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
Enhanced Heating of Salty Ice and Water Under
Microwaves: Molecular Dynamics Study [PDF] |
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AUTHORS |
Motohiko Tanaka and Motoyasu Sato 2008 42 4 62-60 |
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Abstract Through the use of molecular dynamics simulations,
we have studied the enhanced heating of salty ice and water by the electric field
of applied microwaves at 2.5 GHz, and in the range of 2.5-10 GHz for the
frequency dependence. We show that water molecules in salty ice are allowed
to rotate in response to the microwave electric field to the extent
comparable to those in pure water because the molecules in salty ice are
loosely tied by hydrogen bonds with adjacent molecules unlike rigidly bonded
pure ice. The weakening of hydrogen-bonded network of molecules in salty ice
is mainly due to the electrostatic effect of salt ions rather than the
short-range geometrical (size) effect of salt since the presence of salt ions
with small radii causes similar enhanced heating.
Key Words: Microwave heating, salty water and ice, electrostatic effects, molecular dynamics |
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