Ultrasonic characterization of single drops of liquids
- Los Alamos, NM
Ultrasonic characterization of single drops of liquids. The present invention includes the use of two closely spaced transducers, or one transducer and a closely spaced reflector plate, to form an interferometer suitable for ultrasonic characterization of droplet-size and smaller samples without the need for a container. The droplet is held between the interferometer elements, whose distance apart may be adjusted, by surface tension. The surfaces of the interferometer elements may be readily cleansed by a stream of solvent followed by purified air when it is desired to change samples. A single drop of liquid is sufficient for high-quality measurement. Examples of samples which may be investigated using the apparatus and method of the present invention include biological specimens (tear drops; blood and other body fluid samples; samples from tumors, tissues, and organs; secretions from tissues and organs; snake and bee venom, etc.) for diagnostic evaluation, samples in forensic investigations, and detection of drugs in small quantities.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Regents of University of California (Los Alamos, NM)
- Patent Number(s):
- US 5739432
- OSTI ID:
- 871473
- Country of Publication:
- United States
- Language:
- English
Frequency scanning ultrasonic pulse echo reflectometer
|
journal | January 1992 |
Ultrasonic Measurements with Milliliter Liquid Samples in the 0.5–100 MHz Range
|
journal | August 1973 |
Development of methods of precise ultrasonic measurements in small volumes of liquids
|
journal | July 1982 |
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