Patterned microcontainers as novel functional elements for microTAS and LOC.
Using nanoimprint lithography, arrays of highly ordered patterns of polyelectrolyte multilayer microcapsules consisting of alternating layers of poly(allylamine hydrochloride) and poly(sodium 4-styrene sulfonate) have been achieved. Anchoring the capsules on a pre-patterned substrate facilitates the utilization of their various capabilities in lab-on-a chip devices. In this paper we have demonstrated a very effective method to entrap soft capsules into surface cavities. Supported microcapsules were applied as the depots for loading and storage of macromolecular cargo (glucose oxidase and peroxidase) and as preserved microvessels for the cascade of enzymatic reactions. The loading of capsules was achieved under a pre-determined pH environment. This development is potentially useful for the realization of novel multianalytical systems for catalytic, bio-affinity and pH detection with protected sensing molecules.
Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602, Singapore, Singapore.
Maria N
MN
Antipina
Maxim V
MV
Kiryukhin
Karen
K
Chong
Hong Yee
HY
Low
Gleb B
GB
Sukhorukov
D005466:Fluorocarbons / Q000737:chemistry; D005949:Glucose Oxidase; D006863:Hydrogen-Ion Concentration; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D018625:Microscopy, Atomic Force; D009195:Peroxidase; D013499:Surface Properties; D011138:Polytetrafluoroethylene / Q000031:analogs & derivatives
D005466:Fluorocarbons; D005949:Glucose Oxidase; D009195:Peroxidase; C040378:poly(ethylene-tetrafluoroethylene); D011138:Polytetrafluoroethylene