Mass and heat flow measurement sensor for simultaneous measurements of changes at a gas-solid interface
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United States of America Patent
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Feb 20, 2001
Grant Date -
N/A
app pub date -
May 26, 2000
filing date -
Dec 2, 1997
priority date (Note) -
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Abstract
Provided are mass and heat flow measurement sensors comprising a microresonator, such as a quartz crystal microbalance; a heat flow sensor; and a heat sink coupled thermally to the heat flow sensor. The sensors may be used to measure changes in mass due to a sample, such as a gas sorbing or reacting, on a surface of the microresonator and also to measure heat flow from the sample on the surface of the microresonator by utilizing the heat flow sensor, which is coupled thermally to the microresonator. The combined microresonator and heat flow sensor may provide simultaneous and continuous measurement of the changes in mass and heat flow at a gas-solid interface. Also provided are methods for measuring the mass of a sample, such as a gas, and the flow of heat from the sample to the heat sink by utilizing such mass and heat flow measurement sensors.
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