The twenty-first century heralds the era of biotechnology and nanotechnology, electronics and ultrasound. The latest stands for an oscillatory motion in waves propagating particles of the medium and is characterised by a number of distinctive features compared with the vibrations of the audible range. In the ultrasonic frequency range it is relatively easy to obtain directional radiation; well to ultrasonic vibrations focusing, thereby increasing the intensity of ultrasonic oscillations in certain areas of exposure. For propagation in gases, liquids and solids ultrasound produces unique phenomena, many of which have found practical applications in various fields of science and technology. After all, the effect gave birth to the entire industry, with big players like Hilsonic, a UK-based business concentrating its efforts on ultrasonic cleaner devices and complex systems.
It’s now over a hundred years has passed since the application of ultrasonic vibrations. The first laboratory works on the study of ultrasound were performed by Russian physicist Lebedev at the end of XIX, and for the past hundred years the development and application of ultrasound technology involved in many prominent scientists in different countries.
During this time the asset of humanity there were dozens of highly effective, resource-saving and environmentally friendly ultrasonic technologies – hardening, tinning and soldering, preventing the formation of scale on heat transfer surfaces, drying heat-sensitive substances, extraction of animal and vegetable raw materials, dissolution, sterilization of liquids, a fine spray of drugs, heavy fuels, and the preparation of emulsions of ultrafine suspensions, dispersion dyes, polymers and metal welding, washing, cleaning parts without using flammable or toxic solvents. Continue reading