Optimizing Carbon-Based Perovskite Solar Cells with Pyramidal Core –Shell Nanoparticles for High Efficiency
AbstractCarbon-based perovskite solar cells (C-PSCs) have gained attention due to their cost-saving, achieved by eliminating expenses associated with organic materials, hole transport layers (HTL), and metallic contacts. Furthermore, they exhibit improved stability compared to counterparts utilizing HTL/metallic contact interfaces. However, the power conversion efficiency (PCE) of free HTL C-PSCs falls notably lower than their HTL/metallic contact counterparts. In the initial phase of this study, we introduce pyramid-shaped plasmonic nanoparticles (NPs) and utilize them in the photoactive region to enhance the PCE of free ...
Source: Plasmonics - March 27, 2024 Category: Biomedical Science Source Type: research

Corrugated Gold Tip as Optical Tweezers to Apply Force on Zinc Sulphide Quantum Dot Nanoparticle
AbstractOne of the most important issues after synthesizing colloidal quantum dot nanoparticles is how to use them. In some cases, a very small number of these nanoparticles is needed. One of the ways to remove small amounts of these nanoparticles is to use a tip-shaped plasmonic optical tweezer made of metal. This work is dedicated to the improvement of the near-field enhancement beneath the tip apex due to delocalized plasmon excitation on a sub-wavelength grating engraved on the tip and nanofocusing of these plasmons. All the simulations of electromagnetic wave scattering on the nanoantenna are based on the finite diffe...
Source: Plasmonics - March 26, 2024 Category: Biomedical Science Source Type: research

Efficient SnS Solar Cells via Plasmonic Light Trapping and Alternative Buffer Layers: A Combined Machine Learning and FDTD Analysis
AbstractIn this work, we propose a novel design framework based on combined finite-difference time-domain (FDTD) simulations and machine learning (ML) analysis, aiming to improve the light trapping and carrier transport management in the SnS-based thin-film solar cells (TFSCs). The present study aims to identify the key governing solar cell parameters throughout the structure designing processes in order to apply them to develop efficient eco-friendly SnS TFSCs. In this regard, a new SnS solar cell structure based on alternative electron transport layers (ETLs) combined with plasmonic-based light management approach is pro...
Source: Plasmonics - March 26, 2024 Category: Biomedical Science Source Type: research

Harnessing Tamm-Plasmon Polaritons in Cantor Sequence Photonic Quasicrystals for Enhanced Cancer Cell Detection
AbstractIn this paper, we present a novel approach for cancer cell detection using the Cantor sequence-based Tamm plasmon polariton (TPP) platform, addressing the critical challenge of accurate and timely identification in medical diagnostics. The TPP platform, leveraging its unique interaction with electromagnetic waves, exhibits enhanced sensitivity to subtle changes in the surrounding environment ’s refractive index. We investigated two distinct cancer cell types, Jurkat and HeLa, through comprehensive theoretical analysis, examining the platform’s response to variations in refractive index induced by cancer cells. ...
Source: Plasmonics - March 23, 2024 Category: Biomedical Science Source Type: research

Tuning Sensitivity of Surface Plasmon Resonance Sensor Based on Bi-metallic, Antimonene, and Carbon Nanotube for Tuberculosis Detection
AbstractTuberculosis (TB) is a major cause of death. Early detection of TB is difficult, so the new technologies are demanding for diagnostics. The proposed sensor detects TB germs using the surface plasmon resonance (SPR) phenomenon. The proposed work consists of silver, platinum, antimonene, and carbon nanotube between coupling prism BK7 and sensing medium. The transfer matrix method (TMM) has been used for analysing the suggested sensor. The angular interrogation method is employed with the attenuation total reflection (ATR) technique. The COMSOL Multiphysics software has calculated the electric field distribution betwe...
Source: Plasmonics - March 23, 2024 Category: Biomedical Science Source Type: research

Dielectric Loaded MXene Plasmon Waveguide for Subwavelength Confinement at 1550 nm
AbstractMXenes are a recently identified class of two-dimensional materials with exceptionally promising features for use in next-generation optoelectronic applications. Particularly, it provides the versatility to create plasmon resonances ranging from the near-infrared to the mid-infrared, which attracts ever-increasing attention. In this work, a single dielectric-loaded MXene (Ti\(_3\)C\(_2\)T\(_x\)) plasmon waveguide is proposed and investigated. The structure of the dielectric-loaded MXene waveguide consists of a substrate, a dielectric strip, and MXene thin films. The MXene plasmon waveguide is theoretically analyzed...
Source: Plasmonics - March 22, 2024 Category: Biomedical Science Source Type: research

Graphene-Based Wide-Angle Surface Plasmon Resonance Titanium Solar Thermal Absorber Using Fe-Fe2O3 Materials
AbstractThe need for renewable energy is increasing as the energy demand is surging day by day. Industrial heaters can be operated using solar thermal heaters which can be used as renewable energy source. We proposed the new design of an effective solar thermal absorber with a graphene addition in three-layer constructions by using titanium (Ti) in three cylinder-shaped resonators, iron (Fe) for the substrate layer, and ferric oxide (Fe2O3) in the ground layer construction. The design is able to absorb the heat of solar and convert it to thermal energy which can be used for industrial heaters. The constructed design can ev...
Source: Plasmonics - March 22, 2024 Category: Biomedical Science Source Type: research

Extinction Behavior and Near-Field Enhancement of 3D Hybrid Nanostructures Consisting of Ag-Coated SiO2 Nanorods
AbstractThe optical property of three-dimensional (3D) hybrid nanostructures consisting of Ag-coated SiO2 nanorods (Ag-SiO2 NRs) is studied by a method of finite-difference time-domain calculations. In the visible-light to infrared band, the extinction spectra of single Ag-SiO2 NRs are basically dominated by three surface plasmon resonance (SPR) peaks. By calculating the electric fields of Ag-SiO2 NRs excited by the incident light in resonance with the three SRP peaks, the plasmons are identified to originate from the electronic oscillation located at the bottom, the side surface, and the top, respectively, different from ...
Source: Plasmonics - March 22, 2024 Category: Biomedical Science Source Type: research

Critical State of Bi/Trimetallic Plasmonic Nanoparticles: Improvement of Single Molecule Sensing Properties
AbstractWith the aim of to scrutinize the critical plasmonic state, which was introduced in the previous work only for bimetallic spherical nanoparticles (NPs), several bimetallic and trimetallic structures of aluminum (Al), silver (Ag) and gold (Au) are investigated using the modified discrete dipole approximation (DDA) method. It can be seen that optimal bimetallic and trimetallic structures can be found, whose sensitivity of single molecules is significantly higher than the corresponding monometallic structure. A detailed analysis of electric nearfield intensity distribution contours shows that the addition of guest mol...
Source: Plasmonics - March 21, 2024 Category: Biomedical Science Source Type: research

Highly Sensitive Multimode-Single-Mode-Multimode Optical Fiber SPR Refractive Index Sensor with GaSe Nanosheets
AbstractIntroducing a two-dimensional material Gallium selenide (GaSe) for the sensitization for the first time, a novel multimode-single-mode-multimode fiber surface plasmon resonance (SPR) sensor with the gold (Au)-GaSe structure was designed and fabricated. GaSe has ultrahigh carrier mobility and exhibits more excellent optical properties that can strengthen the surface electric field strength and increase the sensitivity significantly. The simulation model is constructed by the finite element method and the optimal film thicknesses are obtained. The simulation results show that the introduction of GaSe enhances the ele...
Source: Plasmonics - March 20, 2024 Category: Biomedical Science Source Type: research

Advanced High-Performance Biochemical Sensor: Synchronous SPR Excitation with Parallel Multiple Single-Mode Fibers (SMFs)
AbstractThis sensor utilizes conventional single-mode fiber (SMF) to create a refractive index (RI) surface plasmon resonance (SPR) system. To enhance its capabilities, multiple SMFs are employed in parallel, enabling the synchronous and collective activation of surface plasmon polaritons (SPPs) to achieve rapid responses for the detection of biochemical analytes in the infrared spectrum, ranging from 1200 to 6900  nm. The sensor’s characteristics are meticulously analyzed using the all-vector finite element method (FEM). The sensing medium comprises gold, chosen for its exceptional corrosion resistance and stability. G...
Source: Plasmonics - March 19, 2024 Category: Biomedical Science Source Type: research

Dynamic Detection of Higher-Order Topological Charges of Vortex Beams Using Ring-Shaped Surface Plasmonic Bending Beams
AbstractDynamic detection of the orbital angular momentum (OAM) properties of optical vortex (OV) beams has shown a wide range of applications in on-chip photonics, optical communication, and optical imaging. However, conventional detection technique suffers from issues of low efficiency, limited functionality, and low noise immunity. In this paper, a dislocated circular hole array is designed to generate ring-shaped surface plasmonic bending (R-SPB) beams. The propagation characteristics of R-SPB beams are numerically simulated using the finite difference time domain (FDTD) method. By analyzing the spot shape, size, and s...
Source: Plasmonics - March 18, 2024 Category: Biomedical Science Source Type: research

A Study of the Plasmonic Properties of Composite Arrays Based on Graphene Nanoribbons and Perovskite Nanowires
AbstractThis work reports on the plasmonic properties of composite arrays consisting of graphene nanoribbons and perovskite nanowires, in the mid-infrared region of 5 –60\(\mu\)m. In the array, a set of graphene nanoribbons are placed on the perovskite nanowires, which are embedded in a glass substrate. Two scenarios are investigated in this work: one is that the graphene and the perovskite are matched, while the other is that the graphene and the perovskite are mismatched. The light transmittance of the arrays is numerically simulated, via the finite difference time domain method. Multiple plasmonic resonances are obser...
Source: Plasmonics - March 16, 2024 Category: Biomedical Science Source Type: research

Design of Ultra-Broadband Metamaterial Absorber from Visible to Infrared Region
AbstractWe have developed an ultra-broadband metamaterial absorber (UBMA) based on impedance matching. The absorber of the UBMA has an absorption of more than 90% in the wavelength range of 300 –4000 nm (absorption bandwidth of 3700 nm), which can cover the visible and infrared regions. When the absorption is greater than 95%, the absorption bandwidth of the UBMA can reach 3440 nm. The designed UMBA has polarization-insensitive and wide-angle absorption characteristics, and the averag e absorption of the transverse magnetic (TM) and transverse electric (TE) modes at 60° oblique incidence are 94.7% and 86.8%, respecti...
Source: Plasmonics - March 14, 2024 Category: Biomedical Science Source Type: research

Highly Sensitive D-Shaped Surface Plasmon Resonance-Based Photonic Crystal Fibre Refractive Index Sensor for Cancer Detection
AbstractIn this paper, we propose a highly sensitive Surface Plasmon Resonance-based single-core D-shaped Photonic Crystal Fibre using a nanocomposite material rather than a single metal. Except for a few microscopic air holes, the Photonic fibre is filled with fused silica. Titanium dioxide (\(TiO_2\)) nanoparticles wrapped in a layer of gold (Au) form the nanocomposite, which is the active material used in cancer detection using surface plasmon resonance. The nanocomposite material is deposited on the flat surface of the PCF, followed by an analyte sensing layer (blood cells). This type of analyte infiltration in the D-s...
Source: Plasmonics - March 14, 2024 Category: Biomedical Science Source Type: research