23 May 2017 Subwavelength silicon disk whispering-gallery-mode microcavities for size-dependent nanoparticles detection in the mid-infrared
Author Affiliations +
Abstract
Three-dimensional finite-element-method numerical simulations are used to investigate a size-dependent sensing technique by observing the effects that a spherical nanoparticle had on the frequency resonances of whispering-gallery modes of a subwavelength silicon microdisk. Results show that the observed spectral shift varies significantly ( 2 to 8 nm) for the TM 1 , 2 optical mode with an attached nanoparticle with radii between 150 and 400 nm. This frequency shift size-dependence makes it possible to identify viruses of different sizes by the resonant frequency change in the transmission spectrum in the mid-infrared.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jeffrey Dionne, Harshitha Ashwath, Lyuba Kuznetsova, "Subwavelength silicon disk whispering-gallery-mode microcavities for size-dependent nanoparticles detection in the mid-infrared," Optical Engineering 56(5), 057111 (23 May 2017). https://doi.org/10.1117/1.OE.56.5.057111 . Submission: Received: 21 February 2017; Accepted: 28 April 2017
Received: 21 February 2017; Accepted: 28 April 2017; Published: 23 May 2017
JOURNAL ARTICLE
5 PAGES


SHARE
Back to Top