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(a) Schematic illustration of the principle of the hydrodynamic trapping of single cells (yellow spheres) and (b) the release of cells by chip stretching. (c) and (d) Images of real chip before and after stretching, with the corresponding deformation of the trap before and after stretching shown in (e) and (f). (g)–(j) The dynamic release process for a single cell triggered by stretching the microfluidic chip along the width direction.
