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Numerical analysis of a thermally tunable spectrally selective absorber enabled by an all-dielectric metamirror
(OSA - The Optical Society, 2020)
In this Letter, we numerically propose a temperature-tunable, ultra-narrowband one-way perfect near-infrared radiation absorber with high transmission in the longer wavelength neighboring spectral range. We obtained this ...
Structural parameters and electronic properties of 2D carbon allotrope: graphene with a kagome lattice structure
(Elsevier, 2020)
In this paper, the electronic properties of a carbon allotrope, graphene with a kagome lattice structure, are investigated. Spin-polarized density functional theory (DFT) calculations with Grimme dispersion corrections ...
High-throughput, high-resolution interferometric light microscopy of biological nanoparticles
(American Chemical Society, 2020-01)
Label-free, visible light microscopy is an indispensable tool for studying biological nanoparticles (BNPs). However, conventional imaging techniques have two major challenges: (i) weak contrast due to low-refractive-index ...
Ultraminiature antennas combining subwavelength resonators and a very-high-ε uniform substrate: the case of lithium niobate
(IEEE, 2020)
Combining the effects of subwavelength resonators and very-high-permittivity substrates enables a high extent of miniaturization, even for very simple, split-loop resonators. Here, we demonstrate how requirements to the ...
Improved Tmax estimation in GaN HEMTs using an equivalent hot point approximation
(IEEE, 2020)
In this article, heat generation distribution and maximum device temperature of gallium-nitride (GaN) high-electron-mobility transistors (HEMTs) are investigated by using the 2-D electrothermal and finite-element method ...
Unveiling the optical parameters of vanadium dioxide in the phase transition region: a hybrid modeling approach
(Royal Society of Chemistry, 2020)
The phase change behavior of vanadium dioxide (VO2) has been widely explored in a variety of optical and photonic applications. Commonly, its optical parameters have been studied in two extreme regimes: hot (metallic) and ...
Intersection behavior of the current–voltage (I–V) characteristics of the (Au/Ni)/HfAlO3/n-Si (MIS) structure depends on the lighting intensity
(Springer, 2020)
The current–voltage (I–V) and capacitance–voltage (C–V) behaviors of the (Au/Ni)/HfAlO3/n-Si (MIS) junctions at room temperature under white light with various intensities were investigated. The ln(I)–V curves show two ...
Tunable plasmon-phonon polaritons in anisotropic 2D materials on hexagonal boron nitride
(De Gruyter Open, 2020)
Mid-infrared (MIR) plasmon-phonon features of heterostructures composing of a plasmonic anisotropic two-dimensional material (A2DM) on a hexagonal boron nitride (hBN) film are analyzed. We derive the exact dispersion ...
Lithography-free disordered metal–insulator–metal nanoantennas for colorimetric sensing
(OSA - The Optical Society, 2020)
The colorimetric detection of bio-agent targets has attracted considerable attention in nanosensor designs. This platform provides an easy to use, real-time, and rapid sensing approach, as the color change can be easily ...
Large scale compatible fabrication of gold capped titanium dioxide nanoantennas using a shadowing effect for photoelectrochemical water splitting
(Elsevier, 2020)
In this paper, a visible light driven plasmonic based photoelectrochemical water splitting (PEC-WS) cell is designed with an elegant two-step fabrication route. First, titanium dioxide (TiO2) nanowires (NWs) were synthesized ...