Improving the performance of nanostructure multifunctional graphene plasmonic logic gates utilizing coupled-mode theory

T Sadeghi, S Golmohammadi, A Farmani, H Baghban - Applied Physics B, 2019 - Springer
Nanostructure ring resonators are suitable devices for photonic integrated circuits. A nano-
scale multifunctional logic device based on plasmon-induced transparency (PIT) is …

Graphene-based mid-infrared biosensor

Z Vafapour, Y Hajati, M Hajati, H Ghahraloud - JOSA B, 2017 - opg.optica.org
We propose a new graphene-based metamaterial biosensor to achieve tunable plasmon-
induced transparency in the mid-infrared (mid-IR) regime. The structure consists of a …

Surface morphology effects in a vibration based triboelectric energy harvester

A Nafari, HA Sodano - Smart Materials and Structures, 2017 - iopscience.iop.org
Despite the abundance of ambient mechanical energy in our environment, it is often
neglected and left unused. However, recent studies have demonstrated that mechanical …

Switchable metamaterial with terahertz buffering and absorbing performance

C Liu, Y Xu, H Liu, M Lin, S Zha - IEEE Photonics Journal, 2021 - ieeexplore.ieee.org
A terahertz metamaterial with switching characteristics from optical buffering to absorbing
performance is realized by incorporating a phase-change film of vanadium dioxide. By …

A polarization-insensitive dual plasmon-induced transparency terahertz sensor based on graphene metamaterial

T Chen, J Wang, D Liang - Optics Communications, 2023 - Elsevier
We present a polarization-insensitive dual plasmon-induced transparency (PIT) sensor
based on graphene metamaterial in the terahertz band. The double PIT window results from …

Switchable metasurface with electromagnetically induced transparency and absorption simultaneously realizing circular polarization‐insensitive circular‐to‐linear …

CJ Gao, HF Zhang - Annalen der Physik, 2022 - Wiley Online Library
A metasurface (MS) with switching features from electromagnetically induced transparency
(EIT) to electromagnetically induced absorption (EIA) is theoretically investigated in the …

A polarization independent electromagnetically induced transparency-like metamaterial with large group delay and delay-bandwidth product

F Bagci, B Akaoglu - Journal of Applied Physics, 2018 - pubs.aip.org
In this study, a classical analogue of electromagnetically induced transparency (EIT) that is
completely independent of the polarization direction of the incident waves is numerically and …

Numerical design of a metasurface-based ultra-narrow band terahertz perfect absorber with high Q-factors

Z Geng, W Su, X Wang, Y Jiang, Y Liu - Optik, 2019 - Elsevier
An ultra-narrow band perfect absorber based on metasurface for terahertz frequency has
been designed and simulated numerically by the finite-difference time-domain method. This …

Large group delay in a microwave metamaterial analog of electromagnetically induced reflectance

Z Vafapour - JOSA A, 2018 - opg.optica.org
Recently reported metamaterial (MM) analogs of electromagnetically induced reflectance
(EIR) enable a unique route to endow classical optical structures with aspects of quantum …

Slowing down light using terahertz semiconductor metamaterial for dual-band thermally tunable modulator applications

Z Vafapour - Applied optics, 2018 - opg.optica.org
Compared to the neighboring infrared and microwave regions, the terahertz regime is still in
need of fundamental technological advances. We have designed a terahertz (THz) …