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Removing inner sacrificial materials with different temperatures. (a) The microchannel transmittances of different parts in the chip and the average after processing with 60, 70, and 80 °C hot vegetable oil. (b–d) Chip deformation after processing at (b) 60 °C, (c) 70 °C, and (d) 80 °C. The scale bars are 1 cm.
