Patent ID: 8399795

Claim:
A method of plasma surface modification of a solid object comprising: creating plasma by at least one plasma source, and application of the plasma to at least a part of a surface of the solid object, wherein the method further comprises: generating ultrasonic high intensity and high power acoustic waves by at least one ultrasonic high intensity and high power gas-jet acoustic wave generator, where said ultrasonic high intensity and high power acoustic waves are directed to propagate towards said surface of the object so that a laminar boundary layer of a gas or a mixture of gases in contact with said solid object is removed or minimized for at least a part of said surface, and where a sound pressure level of said generated ultrasonic high intensity and high power acoustic waves is at least substantially 140 dB and where an acoustic power of said generated ultrasonic high intensity and high power acoustic waves is at least substantially 100 W.