Small pump and ultrasonic control technology using an ultrasonic probe.

The Ultrasonic System Research Institute has developed a liquid circulation technology for ultrasonic cleaners that utilizes the "Constructal Law" related to flow and shape (control of nonlinear phenomena). This was developed with inspiration from observations of river flows, as shown in the attached photo. Regarding the use of ultrasound, we believe that through our experience in observing flow, we can intuitively grasp acoustic flow (a nonlinear phenomenon of ultrasound). Acoustic flow <General Concept> When finite amplitude waves propagate through a gas or liquid, acoustic flow occurs. Acoustic flow is a unidirectional steady flow of matter that arises either as a result of viscous losses from wave pulses in a free inhomogeneous field, or in the vicinity of obstacles (cleaning objects, fixtures, liquid circulation) within an acoustic field, or near vibrating bodies due to inertial losses. Using the above as a reference and hint, we organize the technology for measuring, analyzing, evaluating, and utilizing (controlling) "nonlinear phenomena" in ultrasonic propagation phenomena through the "Constructal Law," which improves flow, thereby consolidating it into ultrasonic technology.

The Ultrasonic System Research Institute has developed an effective stirring (emulsification, dispersion, grinding) technology utilizing the technique of controlling "nonlinear phenomena of ultrasound (acoustic flow)." This technology controls ultrasound (cavitation, acoustic flow) by utilizing (evaluating) the ultrasonic propagation characteristics (analysis results) of indirect containers through surface inspection, ultrasonic tanks, and other items. Furthermore, it realizes effective ultrasonic (cavitation, acoustic flow) propagation states tailored to the structure, material, and acoustic properties of specific target objects, achieved through the interaction of glass containers, ultrasound, and target objects, by controlling the oscillation of ultrasound. In particular, the dynamic characteristics of harmonics through acoustic flow control enable responses at the nano level. It has been applied and developed from examples of dispersing metal powders to nanosize. Through original measurement and analysis techniques of ultrasonic propagation states, we have confirmed the evaluation of acoustic flow and numerous know-how. Ultrasonic propagation characteristics: 1) Detection of vibration modes (changes in self-correlation) 2) Detection of nonlinear phenomena (changes in bispectrum) 3) Detection of response characteristics (analysis of impulse response) 4) Detection of interactions (analysis of power contribution rates)

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.