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AssigneeKansai Technology Licensing Organization Co., Ltd.
InventorSadami Tsutsumi
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The present invention provides a method of and a device for measuring bulk modulus of a fine specimen using a measurement chamber, a reference chamber for comparison, and a differential pressure measurement device for detecting the pressure difference between both chambers. The specimen is contained in the measurement chamber, and in a state where both chambers are set under the standard atmospheric pressure. Then both chambers are set under the compression atmospheric pressure higher than the standard atmospheric pressure and the pressure changes are periodically given to both chambers. The initial volume of the specimen is detected from the differential pressure signals of both chambers when it is under the standard atmospheric pressure and the compression volume of the specimen is detected from the differential pressure signals of both chambers when it is under the compression atmospheric pressure. The bulk modulus of the specimen is measured by computing and analyzing these detected signals.
In a method in which a minute specimen such as a living tissue is contained in a measurement chamber having known volume, and a volume change of said specimen is detected when the atmospheric pressure within this measurement chamber was forced to change from first atmospheric pressure to second atmospheric pressure,
In a state where a measurement chamber, a reference chamber for comparison and differential pressure measurement device for detecting a pressure difference between said both chambers are equipped, a specimen is contained in said measurement chamber, and both said measurement chamber and said reference chamber for comparison have been set under the standard atmospheric pressure, and in a state where said both chambers have been set under a compression atmospheric pressure higher than the standard atmospheric pressure, respectively, a method of measuring bulk modulus of a minute specimen, wherein said both chambers are periodically given a pressure change, the initial volume of said specimen is detected from a differential signal of said both chambers when it is under the standard atmospheric pressure, a compression volume of said specimen is detected from a differential pressure signal of said both chambers when it is under a compression atmospheric pressure and a bulk modulus of said specimen is measured by computing and analyzing these detected signals.
A device for measuring bulk modulus of a fine specimen, wherein said device has a measurement chamber for containing said specimen, a reference chamber for comparison, volume change giving device for periodically giving the same volume change to said both chambers, device for exchanging atmospheric pressure within said both chambers into at least two stages of first pressure and second pressure, and device for detecting a pressure difference within said both chambers when said volume change was given, and bulk modulus of said specimen is calculated by measuring compression volume of said specimen from the relevant differential pressure of both chambers.
Dependencies are inferred from the claim text.