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 (United States)
- 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
Ultrasonic Measurements with Milliliter Liquid Samples in the 0.5–100 MHz Range
|
journal | August 1973 |
Frequency scanning ultrasonic pulse echo reflectometer
|
journal | January 1992 |
Development of methods of precise ultrasonic measurements in small volumes of liquids
|
journal | July 1982 |
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Related Subjects
characterization
single
drops
liquids
closely
spaced
transducers
transducer
reflector
plate
form
interferometer
suitable
droplet-size
samples
container
droplet
held
elements
distance
apart
adjusted
surface
tension
surfaces
readily
cleansed
stream
solvent
followed
purified
air
desired
change
drop
liquid
sufficient
high-quality
measurement
examples
investigated
apparatus
method
biological
specimens
tear
blood
fluid
tumors
tissues
organs
secretions
snake
venom
etc
diagnostic
evaluation
forensic
investigations
detection
drugs
quantities
biological specimens
fluid sample
closely spaced
surface tension
fluid samples
solvent followed
ultrasonic characterization
distance apart
single drops
quality measurement
single drop
/73/