TY - GEN
T1 - Multilayer deposition on patterned hydrogel posts using alternating polyelectrolyte droplets in a microfluidic channel
AU - Lee, Misook
AU - Park, Wook
AU - Chung, Changkwon
AU - Lim, Jaehoon
AU - Hong, Jinkee
AU - Lee, Seung Jong
AU - Ahn, Kyung Hyun
AU - Kwon, Sunghoon
AU - Char, Kookheon
PY - 2009
Y1 - 2009
N2 - We demonstrate that the polyelectrolyte (PE) multilayer thin films deposited on lithographically defined hydrogel posts can be achieved in facile manner using alternating polyelectrolyte droplets in a microfluidic channel. Patterned hydrogel particles, serving as substrates for the PE deposition, were initially formed with photo curable polymers based on the optofluidic maskless lithography. Positively and negatively charged polyelectrolyte droplets in a microfluidic channel were alternately generated by controlling the Capillary Number (Ca). The flow of these alternating PE droplets around the patterned posts enabled the alternating adsorption of PEs, similar to the layer-by-layer (LbL) deposition in bulk solution.
AB - We demonstrate that the polyelectrolyte (PE) multilayer thin films deposited on lithographically defined hydrogel posts can be achieved in facile manner using alternating polyelectrolyte droplets in a microfluidic channel. Patterned hydrogel particles, serving as substrates for the PE deposition, were initially formed with photo curable polymers based on the optofluidic maskless lithography. Positively and negatively charged polyelectrolyte droplets in a microfluidic channel were alternately generated by controlling the Capillary Number (Ca). The flow of these alternating PE droplets around the patterned posts enabled the alternating adsorption of PEs, similar to the layer-by-layer (LbL) deposition in bulk solution.
UR - http://www.scopus.com/inward/record.url?scp=84901776647&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901776647&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84901776647
SN - 9780979806421
T3 - Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
SP - 887
EP - 889
BT - Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PB - Chemical and Biological Microsystems Society
T2 - 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
Y2 - 1 November 2009 through 5 November 2009
ER -