Nanolevel stirring technology utilizing nonlinear phenomena of ultrasound.

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.

The Ultrasonic System Research Institute, in collaboration with Japan Barrel Industry Co., Ltd., is implementing a "plating method" utilizing ultrasound and fine bubbles for plating treatment. Ultrasonic Probe: Outline Specifications - Measurement Range: 0.01 Hz to 200 MHz - Oscillation Range: 1.0 kHz to 25 MHz - Propagation Range: 0.5 kHz to over 900 MHz - Materials: Stainless steel, LCP resin, silicon, Teflon, glass, etc. - Oscillation Equipment: Example - Function Generator Oscillation Method - Control settings are made corresponding to the acoustic characteristics of the target object. - As a result, by controlling the original nonlinear resonance phenomenon, ultrasonic propagation states tailored to the purpose are realized. Based on the measurement, analysis, and evaluation of ultrasonic propagation states, this is a new ultrasonic control technology for precision cleaning, processing, stirring, inspection, etc. <Patent Applications Filed> Patent Application No. 2021-161532: Ultrasonic Plating Patent Application No. 2021-171909: Ultrasonic Processing Patent Application No. 2021-175568: Flow-type Ultrasonic Cleaning Patent Application No. 2023-195514: Ultrasonic Plating Utilizing Megahertz Ultrasound and Fine Bubbles

The Ultrasonic System Research Institute has developed a classification method for the phenomenon of ultrasonic vibrations propagation through the measurement and analysis of ultrasonic propagation states. This classification method estimates linear and nonlinear resonance effects based on the dynamic characteristics (changes in nonlinear phenomena) of the main frequency (power spectrum) related to the ultrasonic propagation state. From previous data analysis, we have been able to categorize effective utilization methods into the following four types: 1: Linear type 2: Nonlinear type 3: Mixed type 4: Variable type Furthermore, the variable type can be further classified into the following three types: 1: Linear variable type 2: Nonlinear variable type 3: Mixed variable type (dynamic variable type) There are numerous successful cases regarding the application of ultrasonic technology based on the development of devices, control settings, and inspections based on the above types. In particular, regarding stability and changes, detailed classification by frequency components has made it possible to efficiently set and adjust various conditions for the intended purpose and effect.

The Ultrasonic System Research Institute has developed technology that applies "measurement, analysis, and control" techniques related to the nonlinearity of ultrasound to analyze and evaluate the dynamic characteristics of ultrasonic vibrations propagating through various media (elastic bodies, liquids, gases). This technology optimizes interactions concerning cleaning objects, tools, ultrasonic transducers, water tanks, and liquid circulation according to specific purposes. Using ultrasonic oscillation control probes and ultrasonic testers, we have developed optimization technology for ultrasonic applications by examining various relationships and response characteristics through oscillation, measurement, and analysis. Note: Power contribution rate, impulse response... Regarding the measurement and analysis of ultrasound, the setting of sampling time utilizes original simulation technology. This technology is provided as consulting support for the optimization of ultrasonic systems (cleaning, stirring, processing, etc.). We measure and analyze the relationships of each ultrasonic output and propose optimized output methods.