Size based sorting and patterning of microbeads by evaporation driven flow in a 3D micro-traps array
Wong, Chee Chung
Wang, Karen Yanping
Abdur Rub Abdur Rahman
Date of Issue2013
School of Chemical and Biomedical Engineering
We present a three-dimensional (3D) micro-traps array for size selective sorting and patterning of microbeads via evaporation-driven capillary flow. The interconnected micro-traps array was manufactured by silicon micromachining. Microliters of aqueous solution containing particle mixtures of different sized (0.2 to 20 μm diameter) beads were dispensed onto the micro-traps substrate. The smaller particles spontaneously wicked towards the periphery of the chip, while the larger beads were orderly docked within the micro-traps array.
three dimensional micro trap array
Lab on a Chip
© 2013 The Royal Society of Chemistry.