Presentation Information
[22p-P01-8]Optical properties of pillar-array plasmonic chip with a high aspect ratio
〇Atsushi Shimizu1, Yasunori Nawa1, Keiko Tawa1 (1.Kwansei Gakuin Univ.)
Keywords:
surface plasmon resonance,pillar,hIgh aspect ratio
Plasmonic chip has light-wavelength sized periodic structures covered with thin metal films and it can provide the enhanced electric field by the grating-coupled surface plasmon resonance (GC-SPR). Up to now, larger fluorescence enhancement was observed in pillar type, compared with in hole type.
In this study, the pillar-type plasmonic chip with a high aspect ratio of 500 nm-height was fabricated in order to improve the enhanced fluorescence.
The replica of the plasmonic chips was fabricated by two times UV nanoimprinting using a pillar array mold with 460 nm pitch. Then, gold or silver was deposited at a film thickness of 50 nm by RF-sputtering, and the chip surface was coated with polydopamine. The microscopic transmission, reflection, fluorescence spectra and fluorescence images were measured by using an upright-inverted microscope equipped with a CCD camera and spectrometer.
In this study, the pillar-type plasmonic chip with a high aspect ratio of 500 nm-height was fabricated in order to improve the enhanced fluorescence.
The replica of the plasmonic chips was fabricated by two times UV nanoimprinting using a pillar array mold with 460 nm pitch. Then, gold or silver was deposited at a film thickness of 50 nm by RF-sputtering, and the chip surface was coated with polydopamine. The microscopic transmission, reflection, fluorescence spectra and fluorescence images were measured by using an upright-inverted microscope equipped with a CCD camera and spectrometer.