Device, methods, and control for sonic guidance of

专利名称：Device, methods, and control for sonic

guidance of molecules and other materialutilizing time-reversal acoustics

发明人：Raghu Raghavan申请号：US12319311申请日：20090106

公开号：US20090270790A1公开日：20091029

专利附图：

摘要：Acoustic waves exhibit a a streaming force that pushes objects along thedirection of sound propagation. Precise motions require well-focused beams. The

technique of time-reversal acoustics (TRA) overcomes beam distortions introduced bypropagation along irregular paths to focus sound without knowledge of the mediumproperties. TRA requires a small receiver to be placed at a point of desired focus. Theinvention disclosed refines TRA by introducing data matching schemes to extend thepoints of focus beyond the location points of the receivers. With as few as two receivers,a large region can be manipulated with well-focused acoustic beams and with no receiverat a desired point of focus. Applications are described in drug delivery in medicine;environmental fluid contaminant control; and in oil exploration, for retrieving oil stuck inunderground pockets.

申请人：Raghu Raghavan

地址：Baltimore MD US

国籍：US

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