Abstract
We utilize tunable graphene plasmons to study nanometricsize molecular refractive index and vibrational modes sensing by a graphene integrated silicon grating. The great electric field enhancement and wide tunability of the localized graphene plasmons enable the proposed device accurate label-free identification of the molecular refractive index and the mid-infrared vibrational modes by detecting the resonant wavelength and the absorption spectrum before and after the protein layer formation. Our calculation results pave the way for the further development of novel cost-effective biosensors by an active plasmonic device.
© 2017 Optical Society of America
PDF ArticleMore Like This
Tingting Wu and Lei Wei
JW2A.84 CLEO: Applications and Technology (CLEO:A&T) 2017
Daniel Rodrigo, Odeta Limaj, Davide Janner, Dordaneh Etezadi, Javier García-de-Abajo, Valerio Pruneri, and Hatice Altug
FM4N.5 CLEO: QELS_Fundamental Science (CLEO:FS) 2016
Zhaoyi Li, Yibo Zhu, James Hone, Qiao Lin, and Nanfang Yu
FM2H.2 CLEO: QELS_Fundamental Science (CLEO:FS) 2017