2013 Fiscal Year Annual Research Report
磁性フォトニック結晶の形成と超高感度バイオセンシング、超高速光スイチへの応用
| Project/Area Number |
24510178
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
BARYSHEV Alexand 豊橋技術科学大学, エレクトロニクス先端融合研究所, テニュアトラック准教授 (70402667)
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| Keywords | Biosensing / Plasmonics / Nanophotonics |
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| Research Abstract |
Biosensing by plasmonic photonic-crystal slab. The Bloch surface wave resonance (SWR) was visualized with the aid of plasmon absorption in a dielectric/metal/dielectric sandwich terminating a one-dimensional photonic crystal (PhC). An SWR peak in calculated spectra of such a plasmonic photonic crystal (PPhC) slab comprising a noble or base metal layer was demonstrated to be sensitive to a negligible variation of refractive index of a medium adjoining to the slab. The considered structure of PPhC slabs can be of practical importance because the metal layer is protected by a capping dielectric layer from contact with analytes and, consequently, from deterioration. It is found that, in case of PPhC slabs, gold (the key element of the surface plasmon resonance-based biosensors) can be replaced by other metals. My works show that the PPhC-based sensors can be low-cost, reusable and robust sensors having a sensitivity surpassing that of the known optical sensors.
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