Fabrication of binary opal lattices in microfluidic devices

  1. Get@NRC: Fabrication of binary opal lattices in microfluidic devices (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/cm401472j
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Journal titleChemistry of Materials
Pages38083815; # of pages: 8
SubjectColloidal self-assembly; Micro-fluidic devices; Microfluidic chip; Particle numbers; Protein separations; Rotation methods; Sedimentation process; Silica particles; Fabrication; Fluidic devices; Mathematical models; Microfluidics; Nanopores; Polystyrenes; Self assembly; Stoichiometry; Silica
AbstractWe have studied growth and fabrication of opal lattices made from polystyrene and silica particles by an on-chip colloidal self-assembly (CSA) approach. An optical microscopy method was used to analyze the lattice growth behavior. A mathematical model was also adopted and modified to describe the growth behavior of the silica system. On the basis of these studies, silica and polystyrene systems demonstrate different growth dynamics that originate from a sedimentation process in the microfluidic chip reservoir fractionating large and small particles. Binary lattices of silica particles were fabricated by a periodic chip rotation method. The effect of particle number ratio on the opal stoichiometry was also studied for the polystyrene system. By increasing the number ratio from 2.5 to 11, different structural stoichiometries were achieved. © 2013 American Chemical Society.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); National Institute for Nanotechnology (NINT-INNT)
Peer reviewedYes
NPARC number21269859
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Record identifierd58cf067-55e9-4066-af64-274df25f1d56
Record created2013-12-13
Record modified2016-05-09
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