Microfluidic Assembly of Homogeneous and Janus Colloid-Filled Hydrogel Granules

@article{citeulike:2709608, abstract = {Abstract: The microfluidic assembly of colloid-filled hydrogel granules of varying shape and composition is described. First, drops are formed by shearing a concentrated colloidal microsphere-acrylamide suspension in a continuous oil phase using a sheath-flow device. Both homogeneous and Janus (hemispherically distinct) spheres and disks are produced by confining the assembled drops in microchannels of varying geometry. Next, photopolymerization is carried out shortly after drop breakup to preserve their morphology. Representative wet and dried granules are characterized using fluorescence and scanning electron microscopy, respectively. Our approach offers a facile route for assembling colloid-filled hydrogel granules with controlled shape and composition.}, address = {Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, Materials Science and Engineering Department, University of Illinois, Urbana, Illinois 61801, INEST Group Postgraduate Program, Philip Morris USA, Richmond, Virginia 23234, Division of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02139, NIST Center for Theoretical and Computational Nanosciences, Gaithersburg, Maryland 20899, Harrington Department Bioengineering, Arizona State University, Tempe, Arizona 85287, and Research Center, Philip Morris USA, 4201 Commerce Road, Richmond, Virginia 23234}, author = {Shepherd, R. F. and Conrad, J. C. and Rhodes, S. K. and Link, D. R. and Marquez, M. and Weitz, D. A. and Lewis, J. A. }, citeulike-article-id = {2709608}, doi = {http://dx.doi.org/10.1021/la060759+}, journal = {Langmuir}, keywords = {2006, colloids, weitz}, month = {October}, number = {21}, pages = {8618--8622}, posted-at = {2008-04-23 18:33:43}, priority = {2}, title = {Microfluidic Assembly of Homogeneous and Janus Colloid-Filled Hydrogel Granules}, url = {http://dx.doi.org/10.1021/la060759+}, volume = {22}, year = {2006} }

TY - JOUR ID - citeulike:2709608 L3 - citeulike-article-id:2709608 TI - Microfluidic Assembly of Homogeneous and Janus Colloid-Filled Hydrogel Granules JF - Langmuir VL - 22 IS - 21 SP - 8618 EP - 8622 AD - Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, Materials Science and Engineering Department, University of Illinois, Urbana, Illinois 61801, INEST Group Postgraduate Program, Philip Morris USA, Richmond, Virginia 23234, Division of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02139, NIST Center for Theoretical and Computational Nanosciences, Gaithersburg, Maryland 20899, Harrington Department Bioengineering, Arizona State University, Tempe, Arizona 85287, and Research Center, Philip Morris USA, 4201 Commerce Road, Richmond, Virginia 23234 N2 - Abstract: The microfluidic assembly of colloid-filled hydrogel granules of varying shape and composition is described. First, drops are formed by shearing a concentrated colloidal microsphere-acrylamide suspension in a continuous oil phase using a sheath-flow device. Both homogeneous and Janus (hemispherically distinct) spheres and disks are produced by confining the assembled drops in microchannels of varying geometry. Next, photopolymerization is carried out shortly after drop breakup to preserve their morphology. Representative wet and dried granules are characterized using fluorescence and scanning electron microscopy, respectively. Our approach offers a facile route for assembling colloid-filled hydrogel granules with controlled shape and composition. KW - 2006 KW - colloids KW - weitz AU - Shepherd, RF AU - Conrad, JC AU - Rhodes, SK AU - Link, DR AU - Marquez, M AU - Weitz, DA AU - Lewis, JA PY - 2006/10/10/ UR - http://dx.doi.org/10.1021/la060759+ ER -