Microfluidic fabrication of smart microgels from macromolecular precursors

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Revision as of 20:39, 7 November 2011 by Grant (Talk | contribs) (Methods and Results)

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Written by: Grant England AP225 Fall, 2011

Info

Title: Microfluidic fabrication of smart microgels from macromolecular precursors

Authors: Sebastian Seiffert*, David A. Weitz

@Harvard: http://weitzlab.seas.harvard.edu/publications/Polymer_Seiffert_Weitz_2010.pdf

Summary

Gels can be used as responsive systems for many applications. By using microgels, particles with various functionalities and sensitivities including drastic size change under certain conditions or multiple-functionalities (Janus particles) can be fabricated. By using a microfluidic device along with precursor polymers which consist of multiple polymeric units and contain the desired functionalities, different types of microgels can be fabricated.

Methods and Results

The droplets of different types of gel are formed by creating a laminar flow of three different types of tagged or modified gels which are broken by an orthogonal flow of another fluid. Once the stream is broken into droplets, UV light is used to cure the gels into structures that can be analyzed to verify their properties.

Janus gels.jpg


Dynamic gels.jpg

Conclusions