Multilayer deposition on patterned hydrogel posts using alternating polyelectrolyte droplets in a microfluidic channel

Misook Lee, Wook Park, Changkwon Chung, Jaehoon Lim, Jinkee Hong, Seung Jong Lee, Kyung Hyun Ahn, Sunghoon Kwon, Kookheon Char

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PublisherChemical and Biological Microsystems Society
Pages887-889
Number of pages3
ISBN (Print)9780979806421
Publication statusPublished - 2009 Jan 1
Event13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009 - Jeju, Korea, Republic of
Duration: 2009 Nov 12009 Nov 5

Publication series

NameProceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Other

Other13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2009
CountryKorea, Republic of
CityJeju
Period09/11/109/11/5

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Bioengineering

Cite this

Lee, M., Park, W., Chung, C., Lim, J., Hong, J., Lee, S. J., Ahn, K. H., Kwon, S., & Char, K. (2009). Multilayer deposition on patterned hydrogel posts using alternating polyelectrolyte droplets in a microfluidic channel. In Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences (pp. 887-889). (Proceedings of Conference, MicroTAS 2009 - The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences). Chemical and Biological Microsystems Society.