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Fluidic devices: Small 4/2009
Author(s) -
Choi SungWook,
Cheong In Woo,
Kim JungHyun,
Xia Younan
Publication year - 2009
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200990016
Subject(s) - fluidics , materials science , polymer , capillary action , microsphere , gelatin , evaporation , nanotechnology , tube (container) , monomer , micrometer , chemical engineering , composite material , chemistry , optics , biochemistry , physics , engineering , thermodynamics , aerospace engineering
The cover picture shows images of uniform microspheres and their close‐packed lattices. A simple fluidic device is fabricated with a PVC tube, a syringe needle, and a glass capillary tube for generating the uniform microspheres. A variety of materials, including hydrophobic poly( $\varepsilon$ ‐caprolactone) polymer (left), hydrophobic ethyle‐2‐cyanoacrylate monomer (center), and hydrophilic gelatin (right) are prepared as uniform microspheres using the fluidic device. Precise control over particle size is achieved by varying the polymer concentration and/or the flow rate for the continuous phase. A tapping method based on solvent evaporation on a concave glass is used for crystallizing these microspheres into close‐packed lattices. For more information, please read the Communication “Preparation of Uniform Microspheres Using a Simple Fluidic Device and Their Crystallization into Close‐Packed Lattices” by Y. Xia et al. beginning on page 454 .