Abstract: The present disclosure relates to antioxidant for a polymer electrolyte membrane fuel cell electrode catalyst, which includes cerium hydrogen phosphate (HCe2(PO4)3(H2O)) in the form of a nanofiber, and an electrode and a membrane-electrode assembly including the same. The electrode for a polymer electrolyte membrane fuel cell of the present disclosure, wherein the antioxidant is dispersed, can improve the mechanical strength of an electrode catalyst layer and can minimize deterioration of chemical durability even after long-term operation. And, a fuel cell including the same can exhibit high output performance and can operate stably even after long-term operation.

Abstract: One aspect of the present invention relates to a drug delivery system comprising a layered structure where a drug layer and a biodegradable polymer layer for controlling the release of drugs are alternately laminated. The drug delivery system can easily control an in-vivo drug release rate and a release amount.

Abstract: A retinal prosthesis system can comprise: a flexible substrate; a nanowire light detector which is placed on the substrate, and comprises one or more nanowires of which the resistance changes according to the applied light; one or more micro-electrodes which are placed on the substrate, are electrically connected to the nanowire light detector, and come in contact with retinal cells; and an electric power supply source for applying electric power to the nanowire light detector and the micro-electrodes. The retinal prosthesis system can be implemented into a very thin and flexible substrate type high resolution retinal system by manufacturing a nanowire light detector on a substrate in which micro-electrodes are implemented.

Abstract: One aspect of the present invention relates to a drug delivery system comprising a layered structure where a drug layer and a biodegradable polymer layer for controlling the release of drugs are alternately laminated. The drug delivery system can easily control an in-vivo drug release rate and a release amount.

Abstract: A retinal prosthesis system can comprise: a flexible substrate; a nanowire light detector which is placed on the substrate, and comprises one or more nanowires of which the resistance changes according to the applied light; one or more micro-electrodes which are placed on the substrate, are electrically connected to the nanowire light detector, and come in contact with retinal cells; and an electric power supply source for applying electric power to the nanowire light detector and the micro-electrodes. The retinal prosthesis system can be implemented into a very thin and flexible substrate type high resolution retinal system by manufacturing a nanowire light detector on a substrate in which micro-electrodes are implemented.