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Process flow of the fabrication of chained PDMS microchannels. (a) Embedding of a microfiber with structure that two thin and long fibers are connected to a chained fiber into the PDMS substrate; (b) fabrication of inlets and an outlet for the microchannel; (c) removing the embedded microfiber; (d) side view of the formed microchannel; (e) top view of the formed microchannel.
