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The packaging of membranes adjacent to microchannels is of growing interest. To facilitate this, microgrooves were laser machined into a polyetherimide (PEI) embossing tool to produce sealing bosses for embossed polycarbonate (PC) microchannel laminae. Laser ablation was conducted using a Nd:YAG laser at 355 nm. Sealing bosses were produced and characterized by hot embossing of PC sheet using the...
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