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(A) Overview of microbubble acoustic sorting device, where exposure to ultrasound displaces bubbles according to their acoustic response and bubbles collected in different channels. (B) Close-up of bubble generation orifice. (C) Close-up of sorting channel. (D) Under traveling acoustic wave, bubbles are displaced toward one of five sorting channels. US = ultrasound. Reproduced, with permission, from Segers and Versluis (2014) with permission of The Royal Society of Chemistry.
