Development of transmission-type surface plasmon resonance sensorusing nano array structures

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A novel method to fabricate a nano array structure and a transmission-type surface plasmon resonance (SPR) sensor using the nano array structures were developed. The nano array structure was fabricated by self-assembly of nano beads. The fabrication method is superior to other method using electron beam in cost and mass production. Although the developed SPR sensor has problems with sensitivity and reproducibility, compared to other SPR sensor based on Kretschmann configuration and grating coupling, the developed SPR sensor has advantages that the optical configuration is very simple and the miniaturization of the equipment is possible. Since the positioning of the optical system is also easy, the SPR sensor developed in this study would be useful for SPR measurement on a CD-type microfluidic device.