[17a-A34-1~9] 4.1 Plasmonics and Nanophotonics

10:15 〜 10:30奨励賞エントリー英語発表

[17a-A34-4] Surface-enhanced Fluorescence by Mie Resonant Silicon Nanosphere Monolayer

〇(M2)VU THI OANH¹, HIROSHI SUGIMOTO¹, MINORU FUJII¹ (1.Kobe Univ.)

キーワード：

Silicon nanoparticles、Surface-enhanced fluorescence、Mie resonance

Surface-enhanced fluorescence (SEF) biosensors are vital for biomedical applications due to their exceptional sensitivity, enabling rapid and precise analyses. Compared to plasmonic resonators suffering from high Ohmic losses, dielectric Mie resonators exhibit lower losses and higher Q resonances. As a dielectric Mie resonator, silicon (Si) nanosphere (NS) with diameters of 100–250 nm is an almost ideal candidate for SEF biosensors due to their strong Mie resonances in the range of visible to near-infrared wavelengths. So far, Si nanostructure arrays have been fabricated with high precision by using electron-beam lithography on a solid substrate. However, it is challenging to create arrays larger than a millimeter scale for naked-eye readable biosensors. In this work, the monolayers of Si NS with diameters of 100 to 250 nm developed in our group are studied for a surface-enhanced fluorescence biosensor platform.