Reconfigurable metamaterials for optoelectronic applications

YS Lin, Z Xu - International Journal of Optomechatronics, 2020 - Taylor & Francis
In recent years, electromagnetic characteristics of metamaterials has aroused great interest
because of innovative fundamental understanding as well as promising potential …

Strong terahertz matter interaction induced ultrasensitive sensing in Fano cavity based stacked metamaterials

S Karmakar, D Kumar, RK Varshney… - Journal of Physics D …, 2020 - iopscience.iop.org
Strong interaction between terahertz (THz) and matter is a topic of paramount importance,
considering continuously enhanced interest in THz photonics as well as condensed matter …

Ultrasensitive specific sensor based on all-dielectric metasurfaces in the terahertz range

Y Zhong, L Du, Q Liu, L Zhu, K Meng, Y Zou, B Zhang - RSC advances, 2020 - pubs.rsc.org
An ultrasensitive specific sensor based on all-dielectric metasurfaces in the terahertz range
was proposed. The designed metasurfaces consist of multi pairs of tilted silicon bars on a …

Magnetic wire: transverse magnetism in a one-dimensional plasmonic system

S Karmakar, D Kumar, BP Pal, RK Varshney… - Optics Letters, 2021 - opg.optica.org
We experimentally demonstrate magnetic wire in a coupled, cut-wire pair-based
metasurface operating at the terahertz frequencies. A dominant transverse magnetic dipole …

Lattice-induced plasmon hybridization in metamaterials

S Karmakar, D Kumar, RK Varshney… - Optics Letters, 2020 - opg.optica.org
We explore an inherent connection between two fundamental concepts of physics–
resonance (eigen mode) hybridization and lattice effect in sub-wavelength periodic …

Dynamically tunable slow light characteristics in graphene based terahertz metasurfaces

D Kumar, KM Devi, R Kumar, DR Chowdhury - Optics Communications, 2021 - Elsevier
We propose a graphene based metasurface exhibiting dynamic slow light behavior via
electromagnetically induced transparency (EIT) effect in the terahertz regime. The unit cell of …

Magnetospectroscopy of terahertz surface plasmons in subwavelength perforated superlattice thin-films

S Karmakar, D Kumar, RK Varshney… - Journal of Applied …, 2022 - pubs.aip.org
Surface plasmons, the resonant oscillations of conducting electrons at the interface of
negative and positive permittivity materials, pave the way for enhanced electromagnetic …

Resonance phenomena in electromagnetic metamaterials for the terahertz domain: a review

S Banerjee, BP Pal… - Journal of Electromagnetic …, 2020 - Taylor & Francis
Most electromagnetic phenomena pertaining to metamaterials are observed at the
resonance positions. In this review, we have collated and analyze the most prevalent forms …

Magnetotransport‐Induced Non‐Contact Terahertz Detection of Weak Magnetic Fields in Optically Thin Frequency‐Agile Superlattice Metasurfaces

S Karmakar, N Acharyya, S Rane… - Advanced Optical …, 2023 - Wiley Online Library
Magnetotransport, the magnetic field induced electron transport phenomenon through
metals and semiconductors, has proven to be a useful technique to tailor the properties of …

Broadside-coupling–enabled insulator-to-metal transition in a terahertz metasurface

S Mallick, DR Chowdhury - Europhysics Letters, 2022 - iopscience.iop.org
We theoretically demonstrate stacked-dipole-resonators–based (broadside near-field
coupling configuration) multilayer metasurfaces separated by a vanadium dioxide film to …