Patent ID: 7645343

Claim:
A method for removal of one of more particles on a surface, the method comprising: providing an assembly of two or more activatable transducers, with each transducer being capable of generating at least one cavity in a selected particle removal liquid, where the generated cavity subsequently collapses and provides a mechanism for removal of at least one particle on a surface suspended in the particle removal liquid; electrically connecting said transducer assembly to a servo control unit; immersing the transducer assembly in a selected test liquid; activating at least one transducer of said transducer assembly; measuring cavity density produced by the at least one transducer; determining whether to adjust at least one parameter of the at least one transducer; using said servo control unit to adjust the at least one parameter if adjustment occurs; removing the transducer assembly from the test liquid, disconnecting the transducer assembly from the servo control unit, and immersing the transducer assembly in the particle removal liquid after the servo control unit is disconnected; and activating the at least one transducer in the particle removal liquid, and allowing at least one cavity produced by at least one of the transducers to collapse and to thereby remove at least one particle on a surface immersed in the particle removal liquid.