FORMULATION OF ACOUSTICALLY ACTIVATABLE PARTICLES HAVING LOW VAPORIZATION ENERGY AND METHODS FOR USING SAME

FORMULATION OF ACOUSTICALLY ACTIVATABLE PARTICLES HAVING LOW VAPORIZATION ENERGY AND METHODS FOR USING SAME

Acoustically activatable particles having low vaporization energy and methods for making and using same are disclosed. A particle of material includes a first substance that includes at least one component that is a gas 25° C. and atmospheric pressure. A second substance, different from the first su...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Dayton, Paul Alexander, Matsunaga, Terry Onichi, Sheeran, Paul Steven, Borden, Mark A
Format: Patent
Sprache:eng
Schlagworte:
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:Acoustically activatable particles having low vaporization energy and methods for making and using same are disclosed. A particle of material includes a first substance that includes at least one component that is a gas 25° C. and atmospheric pressure. A second substance, different from the first substance, encapsulates the first substance to create a droplet or emulsion that is stable at room temperature and atmospheric pressure. At least some of the first substance exists in a gaseous phase at the time of encapsulation of the first substance within the second substance to form a bubble. After formation of the bubble, the bubble is condensed into a liquid phase, which causes the bubble to transform into the droplet or emulsion having a core consisting of a liquid. The droplet or emulsion is an activatable phase change agent that remains a droplet having a core consisting of a liquid at 25° C. and atmospheric pressure. The first substance has a boiling point below 25° C. at atmospheric pressure.