Abstract
Giant magnetostrictive actuator has potential for producing a huge stress and minute stroke unlike electromagnetic actuators using electromagnetic force. We proposed the powerful generation of cavitation in water medium driven by the actuator. The collapse of cavitation generates pulse shock wave and also brings about radicals generating by addition of titanium oxide. The previous researches show the generation of cavitation and radicals based on the methylene blue test method, and the destructive influence of both virus and bacteria was recognized. The paper proposes a new apparatus of a circulation type system to aim the large capacity, and discusses the evaluation of sterilization and inactivation quantitatively. And we observed the biological condition of the cell to check the biological effect after sterilization.
