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(A) Glass microfluidic device welded using the laser. The welding line (white line) was found around the microchannel. (B) Schematic of the ultraviolet (UV) curable glue application to bond two glass sheets. (C,D) Glass microfluidic devices bonded using UV curable glue. The left one had larger gluing area (200 mm2) than the right (84 mm2).
