title: Size based sorting and patterning of microbeads by evaporation driven flow in a 3D micro-traps array.
abstract: 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.
authors.affiliation: Institute of Microelectronics, Agency for Science Technology and Research, 11 Science Park Road, Singapore Science Park 2, Singapore 117685, Singapore. wongcc@ime.a-star.edu.sg
authors.forename: Chee Chung
authors.initials: CC
authors.lastname: Wong
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Liu
authors.forename: Karen Yanping
authors.initials: KY
authors.lastname: Wang
authors.forename: Abdur Rub Abdur
authors.initials: AR
authors.lastname: Rahman
mesh_terms: D046228:Microarray Analysis / Q000295:instrumentation*; D008863:Microspheres; D010316:Particle Size; D016062:Porosity; D012825:Silicon / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D012822:Silicon Dioxide; D012825:Silicon