acoustic levitation definition of acoustic levitation in the Free Online Encyclopedia.

acoustic levitation [ə′küs·tik lev·ə′tā·shən]

(acoustics)

The use of a very intense sound wave to keep a body suspended above the device producing the sound wave.

Acoustic levitation

The use of intense acoustic waves to hold a body that is immersed in a fluid medium against the force of gravity without obvious mechanical support.

Levitation can occur in the presence of fluid flow, including the back-and-forth fluid flow produced by the passage of an acoustic wave. Such acoustically generated forces are extremely small in common experience. But intense acoustic waves are nonlinear in their basic character and, therefore, may exert a net acoustic radiation pressure on an object sufficient to balance the gravitational force and thus levitate it. See Acoustic radiation pressure

The applications of acoustic levitation in air or other gas include an acoustic positioning module that has been carried in the space shuttle and used in fundamental studies of the oscillation and fission of spinning drops. An acoustic levitation furnace has been designed to study the possibility of containerless solidification of molten materials.

Applications of the levitation of objects in liquids have included measurements of the ultimate tensile strengths of liquids, mechanical characterization of superheated and supercooled liquids, the measurement of properties of biological materials (including human red blood cells and lipids from the porpoise dome), the study of shape oscillations and interfacial tension of levitated drops, and the evaporation of charged drop arrays levitated electroacoustically. See Sound

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No references found	is among the first to demonstrate that acoustic levitation at high temperatures is possible in a nearly weightless environment. Materials get a lift from sound by Science News A partnership between SPACEHAB and Guigne Technologies Limited of Newfoundland, Canada, Space-DRUMS(tm) (Dynamically Responding Ultrasonic Matrix System) uses acoustic levitation, or sound waves, to hold fluid or solid material samples in place in microgravity while they are being processed aboard the Shuttle or ISS. SPACEHAB-Led Joint Venture Wins $5 Million Contract by Business Wire Guigne Technologies and its sister engineering company Guigne International Limited (GIL) provide acoustic design engineering services specializing in very high resolution sonar designs, high speed signal processing with fuzzy logic architectures, containerless acoustic levitation engineering and material processing physics. Revolutionary Microgravity Processing Capability is Goal of New Joint ... by Business Wire	acoustic domain acoustic emission acoustic energy acoustic fatigue acoustic feedback Acoustic Filter acoustic fingerprint acoustic fix acoustic generator acoustic grating acoustic heat engine acoustic hologram acoustic homing acoustic horn acoustic image acoustic imaging Acoustic Impedance acoustic inertance acoustic insulation Acoustic Intensifier acoustic intensity acoustic interferometer acoustic jamming acoustic labyrinth Acoustic Lens acoustic levitation acoustic line acoustic line of position acoustic logging acoustic Mach meter acoustic mass acoustic mass reactance Acoustic Materials acoustic measurement Acoustic Measurements acoustic memory acoustic microscope acoustic mine acoustic mode acoustic navigation acoustic nerve acoustic noise acoustic ocean-current meter acoustic ohm acoustic particle detection acoustic phonon acoustic plaster acoustic position reference system Acoustic Power Acoustic Probe acoustic radar	acoustic impedance acoustic impedance acoustic impedance acoustic impedances acoustic impedances acoustic impedances Acoustic Induced Vibration acoustic inertance Acoustic Input Processing System Acoustic insulation Acoustic insulation acoustic intelligence acoustic intelligence Acoustic Intelligence Data System Acoustic Intelligence Gathering System Acoustic Intelligence Processing System Acoustic Intensifier Acoustic intensity Acoustic Intercept Receiver Acoustic Intercept Receiver Detect/Track Acoustic Intercept System Acoustic Interference Monitor System Acoustic interferometer acoustic jamming acoustic jamming Acoustic Kung Fu Films acoustic labyrinth Acoustic Leak Detection acoustic lens Acoustic Lens Simulation Software Package acoustic levitation acoustic line acoustic line of position Acoustic Link Control Software Acoustic Literature Map of Europe Acoustic Local Area Network acoustic logging acoustic Mach meter acoustic maculae acoustic maculae acoustic maculae acoustic maculae acoustic mass acoustic mass reactance Acoustic Materials acoustic measurement Acoustic Measurement Facilities Improvement Program Acoustic Measurement System Acoustic Measurements acoustic meatus acoustic meatus acoustic meatus acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus acoustic memory Acoustic Meteorological Observing System acoustic microscope acoustic microscope acoustic microscope acoustic microscope

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is among the first to demonstrate that acoustic levitation at high temperatures is possible in a nearly weightless environment.

Materials get a lift from sound by Science News

A partnership between SPACEHAB and Guigne Technologies Limited of Newfoundland, Canada, Space-DRUMS(tm) (Dynamically Responding Ultrasonic Matrix System) uses acoustic levitation, or sound waves, to hold fluid or solid material samples in place in microgravity while they are being processed aboard the Shuttle or ISS.

SPACEHAB-Led Joint Venture Wins $5 Million Contract by Business Wire

Guigne Technologies and its sister engineering company Guigne International Limited (GIL) provide acoustic design engineering services specializing in very high resolution sonar designs, high speed signal processing with fuzzy logic architectures, containerless acoustic levitation engineering and material processing physics.

Revolutionary Microgravity Processing Capability is Goal of New Joint ... by Business Wire