Thermal sensors prepared from nanostructureed powders
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United States of America Patent
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Feb 4, 2003
Grant Date -
Jul 26, 2001
app pub date -
Feb 17, 1998
filing date -
Oct 21, 1997
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Abstract
This invention describes a method of rapidly monitoring the temperature of a medium and a method of preparing a quantum confined device that can enable such measurements. The monitoring principle uses changes in impedance of nanostructured devices, i.e. devices in which one or more materials have the domain size precision engineered to less than 500 nanometers, preferably to dimensions less than the domain sizes where quantum confinement effects become significant and modify the electrical or thermal properties of the materials. The invention can be used to monitor absolute values of and changes in temperature of gases, inorganic and organic liquids, solids, suspensions, and mixtures of one or more of the said phases. The invention can be used to monitor radiation, power, heat and mass flow, charge and momentum flow, and phase transformation.
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