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Process flow of the preparation of a balloon pump with a floating valve: (a) fabrication of the balloon pump by the integration of polydimethylsiloxane (PDMS) layers; (b) solidification of polyethylene glycol diacrylate (PEGDA) using UV light in a microchannel; (c) washing of uncured PEGDA using ethanol and water; and (d) discharge of the liquid from the balloon pump after the liquid is infused via a check valve.
