Surface treatment technology using dynamic control of ultrasound and fine bubbles.

The Ultrasonic System Research Institute provides consulting services for the manufacturing and development methods of the "Deaeration Fine Bubble (Microbubble) Generation Liquid Circulation Device," which can efficiently control ultrasonic waves. "Deaeration Fine Bubble (Microbubble) Generation Liquid Circulation Device" 1) By narrowing the suction side of the pump, cavitation is generated. 2) Cavitation causes bubbles of dissolved gas to form. The above describes the state of the deaeration liquid circulation device. 3) When the concentration of dissolved gas decreases, the bubble size of the dissolved gas due to cavitation becomes smaller. 4) Through appropriate liquid circulation, fine bubbles (microbubbles) of less than 20μ are generated. The above describes the state of the deaeration microbubble generation liquid circulation device. 5) When ultrasonic waves are applied to the above-mentioned deaeration fine bubble (microbubble) generation liquid circulation device, the ultrasonic waves disperse and crush the fine bubbles (microbubbles). When measuring the fine bubbles (microbubbles), the distribution of ultra-fine bubbles exceeds that of fine bubbles. The above state indicates that ultrasonic waves can be stably controlled.

Technology for stably utilizing fine bubbles with a spherical size of 20μm or less—nano-level cleaning method that controls acoustic flow of ultrasound— 1-1. Basics of Ultrasound 1-2. Propagation Phenomena of Ultrasonic Vibration 1-3. Fine Bubbles (Microbubbles) *Properties of Microbubbles* 1) Bubbles of about 10μm rise slowly over approximately 3 hours to a height of 1m. 2) The generated bubbles exist independently without coalescing, resulting in excellent dispersion. 3) They have the property of slowly rising in water and adsorbing tiny debris to bring it to the surface. ... 13) The negative potential depends on the pH of the water. 14) Microbubbles have excellent scattering characteristics for ultrasound. 15) Microbubbles collapse as a resonance phenomenon when exposed to ultrasonic irradiation. These properties are expected to be further elucidated in the future, but currently contain many unknown aspects. Propagation Characteristics of Ultrasound 1) Detection of Vibration Modes (Changes in Self-Correlation) 2) Detection of Nonlinear Phenomena (Changes in Bicoherence) 3) Detection of Response Characteristics (Analysis of Impulse Response) 4) Detection of Interactions (Analysis of Power Contribution Rate)

The Ultrasonic System Research Institute applies the technology of "flow-type ultrasonic systems" utilizing the "Constructal Law" related to flow and shape. - Application examples of flow-type ultrasonic systems - Precision cleaning of special lenses and glass components Improvement of water quality (cleaning, molecular nanonization) for cleaning and stirring liquids Surface treatment of complex shapes, wires, and powders (stress relief) Control of chemical reactions involving solvents, detergents, precious metals, and polymers Nanoscale stirring, dispersion, cleaning, and processing Film shapes, large pipe shapes, etc. ...Surface modification of materials and components that were previously difficult Regarding the use of ultrasound, we believe that through our experience in observing flow, we can intuitively grasp acoustic flow. Acoustic flow <general concept> When a finite amplitude wave propagates through a gas or liquid, acoustic flow occurs. Acoustic flow is a unidirectional steady flow of matter that arises as a result of viscous losses from wave pulses, either in a free inhomogeneous field or in the vicinity of obstacles (cleaning objects, jigs, liquid circulation) within an acoustic field, or near vibrating bodies due to inertial losses.

The Ultrasonic System Research Institute provides consulting services for the manufacturing and development methods of ultrasonic cleaning machines using a "degasification fine bubble (microbubble) generation liquid circulation device" that can efficiently control ultrasonic waves. "Degasification Fine Bubble (Microbubble) Generation Liquid Circulation Device" 1) By narrowing the intake side of the pump, cavitation is generated. 2) Cavitation causes bubbles of dissolved gas to form. The above describes the state of the degasification liquid circulation device. 3) When the concentration of dissolved gas decreases, the size of the bubbles formed by cavitation becomes smaller. 4) Through appropriate liquid circulation, fine bubbles (microbubbles) smaller than 20μ are generated. The above describes the state of the degasification fine bubble (microbubble) generation liquid circulation device. 5) When ultrasonic waves are applied to the above degasification fine bubble (microbubble) generation liquid circulation device, the ultrasonic waves disperse and crush the fine bubbles. When measuring the fine bubbles, the distribution of ultrafine bubbles becomes greater than that of fine bubbles. The above state indicates that ultrasonic waves can be stably controlled.