Optical Properties of Modified Nanorod Particles for Biomedical Sensing

Renato Iovine, Luigi La Spada, Lucio Vegni

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In this paper, an analytical and numerical investigation for modified gold nanorod particles, operating in the visible and in the
infrared regime is proposed. The modified particles consist in a core/shell structure (dielectric core/metallic shell) embedded in a
dielectric environment. Their electromagnetic properties, in terms of extinction cross section (absorption and scattering) for both
longitudinal and transverse modes excitation, are evaluated. In particular, new analytical models are developed, describing their
resonant behavior. Good agreement among the analytical, numerical, and experimental results was achieved. Exploiting the obtained
models, the nanoparticle sensitivity was studied. Analytical and full wave results validate the high sensitivity performances and the
potential role of such structures to be used for sensing applications.
Original languageEnglish
Article number7004004
Pages (from-to)169-172
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number2
Publication statusPublished - 2014


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