Optical biosensors using plasmonic and photonic crystal band-gap structures for the detection of basal cell cancer

S Khani, M Hayati - Scientific reports, 2022 - nature.com
One of the most interesting topics in bio-optics is measuring the refractive index of tissues.
Accordingly, two novel optical biosensor configurations for cancer cell detections have been …

Highly sensitive THz refractive index sensor based on folded split-ring metamaterial graphene resonators

MR Nickpay, M Danaie, A Shahzadi - Plasmonics, 2021 - Springer
A highly sensitive absorption-based sensor based on folded split-ring metamaterial
graphene resonators (FSRMGRs) is designed, and its biomedical application in terahertz …

Design of a graphene-based multi-band metamaterial perfect absorber in THz frequency region for refractive index sensing

MR Nickpay, M Danaie, A Shahzadi - Physica E: Low-dimensional Systems …, 2022 - Elsevier
In this paper, a multi-band metamaterial perfect absorber, formed by an array of combined H
and U-shaped graphene stripes, is proposed. The structure is numerically simulated using …

A high-sensitivity refractive index biosensor based on Si nanorings coupled to plasmonic nanohole arrays for glucose detection in water solution

L Hajshahvaladi, H Kaatuzian, M Danaie - Optics Communications, 2022 - Elsevier
In this paper, a refractive index biosensor is proposed which employs Si photonic nanorings
coupled to ring-shaped plasmonic nanohole arrays (PNA) on a hybrid substrate to facilitate …

Y-shaped graphene-based antenna with switchable circular polarization

MJ Chashmi, P Rezaei, N Kiani - Optik, 2020 - Elsevier
In this paper, an antenna with the ability to provide the right-and left-hand circular
polarization in the THz band is presented. The central frequency of the antenna is set at 0.45 …

A terahertz dual-band metamaterial perfect absorber based on metal-dielectric-metal multi-layer columns

P Zamzam, P Rezaei - Optical and Quantum Electronics, 2021 - Springer
In this paper, a new model of multi-layer metamaterial perfect absorber (MPA) in the
terahertz region has been introduced. This model is similar to the classic absorber model, ie …

Optical refractive index sensors based on plasmon-induced transparency phenomenon in a plasmonic waveguide coupled to stub and nano-disk resonators

S Khani, M Afsahi - Plasmonics, 2023 - Springer
Plasmon-induced transparency (PIT) in the transparent window provides new insights into
the design of optical devices such as optical sensors. Therefore, in this paper, four novel …

Quad band metal-dielectric-metal perfect absorber to selective sensing application

SA Khatami, P Rezaei, P Zamzam - Optical and Quantum Electronics, 2022 - Springer
In this article, we have managed to achieve a quad-band perfect classical absorber in the
terahertz band. In this proposed structure, which consists of three layers that the top and …

Design of all-optical graphene switches based on a Mach-Zehnder interferometer employing optical Kerr effect

S Armaghani, S Khani, M Danaie - Superlattices and Microstructures, 2019 - Elsevier
In this paper, all-optical switches using a novel combination of graphene and insulator-metal
plasmonic waveguides are proposed. For the proposed switches the optical Kerr effect is …

RETRACTED ARTICLE: Plasmonic all-optical modulator based on the coupling of a surface Plasmon stub-filter and a meandered MIM waveguide

S Khani, M Danaie, P Rezaei - Optical and Quantum Electronics, 2022 - Springer
In this paper, an all-optical plasmonic modulator with a tunable data wavelength is
designed. This structure consists of a stub filter (a metal–insulator–metal straight waveguide …