Refractive index susceptibility of palladium nanoplates with plasmonic resonance in the visible region

Kosuke Sugawa, Daiki Sugimoto, Hironobu Tahara, Takumi Eguchi, Masahiro Katoh, Koji Uchida, Shota Jin, Takuji Ube, Takashi Ishiguro, Joe Otsuki

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Abstract

We synthesized anisotropic Pd nanoplates for use as a novel refractive index (RI) sensing material in the visible region. The nanoplates showed an extinction peak that was attributed to the excitation of the localized surface plasmon resonance at ~620 nm in the visible region. It was found that the peak was red-shifted with increasing the RI of the surrounding medium. The susceptibility was calculated to be 250 nm per RI unit, comparable to some anisotropic Au nanoparticles that are excellent RI sensing materials.

Original languageEnglish
Pages (from-to)859-867
Number of pages9
JournalOptical Materials Express
Volume6
Issue number3
DOIs
Publication statusPublished - 1 Mar 2016

Cite this

Sugawa, K., Sugimoto, D., Tahara, H., Eguchi, T., Katoh, M., Uchida, K., ... Otsuki, J. (2016). Refractive index susceptibility of palladium nanoplates with plasmonic resonance in the visible region. Optical Materials Express, 6(3), 859-867. https://doi.org/10.1364/OME.6.000859