Separation of micro / nanoparticles is of great importance in chemical and biological analysis, food and chemical processing and environmental assessment. The use of high-frequency ultrasound in liquid separation systems has been knew for a long time and is due to a number of factors. First of all, it is the ability of ultrasound radiation power to capture and distribute particles of an organic or inorganic suspension along the nodes and anti-nodes. Using unique characteristics of microscale flow phenomena, various methods have been developed for the rapid and accurate separation and sorting of microparticles in a continuous mode. Advances in microfluids enable the use of sorting technologies that combine the advantages of continuous operation with small-sized scale suitable for manipulating and probing individual particles or cells. Microfluid sorting platforms require a smaller sample volume, which has several advantages in terms of reagent cost reduction, analysis time and less invasiveness of patients for sample extraction.
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