Microfluidic fabrication of photo-responsive hydrogel capsules.
We report thermo- and photo-responsive hydrogel capsules, providing controlled encapsulation and triggered release of water-soluble encapsulants. Monodisperse O/W/O (oil-in-water-in-oil) double-emulsion drops are produced in a capillary microfluidic device as templates, which transform into hydrogel capsules upon polymerization of thermo-sensitive monomers in the water phase containing gold nanorods.
Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, South Korea.
Bomi
B
Kim
Hye
H
Soo Lee
Jaeyun
J
Kim
Shin-Hyun
SH
Kim
D002214:Capsules / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D010316:Particle Size; D055668:Photochemical Processes; D013499:Surface Properties; D014867:Water / Q000737:chemistry
D002214:Capsules; D014867:Water; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D006046:Gold