Chemically doped-graphene FET photodetector enhancement via controlled carrier modulation with an iron(III)-chloride

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: 145, P. 111089 - 111089

Published: April 11, 2024

Language: Английский

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Numerical analysis of an advanced infrared-based graphene metasurface surface plasmon resonance sensor for COVID-19 detection

Diamond and Related Materials, Journal Year: 2024, Volume and Issue: unknown, P. 111601 - 111601

Published: Sept. 1, 2024

Language: Английский

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A novel design of THz resonance gas sensor with advanced 2-bit encoding capabilities

Optical and Quantum Electronics, Journal Year: 2024, Volume and Issue: 56(9)

Published: Sept. 5, 2024

Language: Английский

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Terahertz Lattice enhanced Quasi-Anapole Immunosensor assisted by protein antibody and AuNPs

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 410, P. 135628 - 135628

Published: March 9, 2024

Language: Английский

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Effect of lightly substituted samarium ions on the structural, optical, magnetic and dielectric properties of the sonochemically synthesized M-type Sr-hexaferrite nanoparticles

Physica B Condensed Matter, Journal Year: 2024, Volume and Issue: 681, P. 415840 - 415840

Published: March 13, 2024

In this study, the role of sonochemical treatment followed by a combustion process adopted for synthesis SrSmxFe12-xO19 (x = 0.01 to 0.03) hexaferrites. We have investigated effect lightly Sm substitutions on structural, magnetic, optical and dielectric properties in Strontium X-ray diffraction analysis show M as major phase with impurity. The FTIR shows that value force constant increased both sides (tetra hederal octa hederal) increase samarium content. band gap was calculated using Tauc method from UV–Visible spectra. Result content increases x 0.03 gradually 2.50 eV 2.91 respectively. surface morphology prepared substituted SrM nanoparticles examined field emission scanning electron microscopy, an average particle size found 301 nm, 254 285 nm 0.01, 0.02, compositions High values Ms (53.104 emu/g.) Mr (29.0 emu/g) observed sample low Hc 53.104 Oe. Mr/Ms all samples are >0.5 formed hexaferrite possess single magnetic domain structure. Sm-doped SrFe12O19 compound exhibits (ε′) ∼ 20 at frequencies, while it increasing temperature reached 100 when but less than 150 0.02 0.03. frequency-dependent confirmed contributions different polarization mechanisms.

Language: Английский

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First-principles screening of XSbF₃ (X = Ba and Ra) fluoroperovskites: an insight into structural, optoelectronic and thermal properties

Physica Scripta, Journal Year: 2024, Volume and Issue: 99(6), P. 0659b3 - 0659b3

Published: May 2, 2024

Abstract This work presents a computational study of the physical properties such as structural, electronic, optical and thermal XSbF 3 (X = Ba Ra) fluoroperovskites. The calculations were performed using density functional theory (DFT) in conjunction with Quantum Espresso code. stability crystal structure compounds is determined by binding energy ( E mathvariant="normal">b stretchy="false">) computations. values for BaSbF RaSbF are − 19.25 20.04 mathvariant="normal">eV respectively, indicating that both studied stable. optimized lattice constants 5.03 5.06 Å, respectively. evaluation electronic conducted band structure, total states (DOS), partial (PDOS). It observed from PDOS plots p-states Sb F whereas d-states X atoms have major contribution formation structure. Various been computed compared. static value ε 1 0 highlights metallic nature while stands out having highest recorded 2 . maximum n ω 8.46 6.86 respectively their potential photoelectric applications. Furthermore when examining it evident BaSbF3 compound material storage because its higher electron at 2.36 KJ/N.mol lower free −2.55 compared to RaSbF3 compound. On other hand, an efficient catalysis due high ability absorb heat external source, first investigation compounds, which provides valuable insights into sb-based fluroperovskites

Language: Английский

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A review on advancement of materials for terahertz applications

Next Materials, Journal Year: 2025, Volume and Issue: 6, P. 100479 - 100479

Published: Jan. 1, 2025

Language: Английский

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The influence of pulse frequency on the energy evolution law and rock-breaking effect of pulsed abrasive water jet

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(4)

Published: April 1, 2024

Compared to continuous abrasive jet and high-pressure water jet, pulsed can intermittently generate high hammer pressure is commonly used in applications such as coal mining petroleum engineering for rock-breaking purposes. Pulse frequency one of the key factors affecting evolution acceleration impact energy, thereby influencing system's energy transfer efficiency cutting ability. The equation motion established based on two-phase flow theory, variation law velocity with pulse solved. Fluent-EDEM (Extended Discrete Element Method) was simulate field structure process under different conditions, intrinsic influence mechanism clarified. Combined experiments using jets, following conclusions are drawn: increases, inertia makes it unable respond a timely manner pulsation water, resulting reduction exchange rate intermittent gradual decrease maximum abrasive. This trend more pronounced at higher frequency. Within same time period, cumulative decreases first then increases increase frequency, indicating existence an optimal that maximizes jet. Under fixed conditions erosion time, 30 Hz exhibits best capability.

Language: Английский

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Revealing the Structural, Elastic, Electronic, and Optical Properties of K₂ScCuCl₆ and K₂YCuCl₆: An In-Depth Exploration Using Density Functional Theory

ACS Omega, Journal Year: 2024, Volume and Issue: 9(14), P. 16860 - 16867

Published: March 29, 2024

The optoelectronic, structural, and elastic properties of K2ScCuCl6 K2YCuCl6 double perovskite compounds were thoroughly investigated in this study using density functional theory. It is observed that both exhibit exceptional structural mechanical stability. stability assessed Goldsmith's tolerance factor (tG), with values approaching unity indicating a reliable cubic structure. Phonon was ensured by the absence negative energy formations only real frequencies phonon calculations. Applying finite displacement method also provided further evidence compounds' thermodynamic electronic analysis revealed are narrow band gap semiconductors, 1.8 2.5 eV, respectively. This confirmed analyzing states. Furthermore, optical exhibited transparency at lower photon energies significant absorption higher energies. These exciting findings suggest have promising applications high-frequency UV devices.

Language: Английский

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Advances in terahertz biosensors toward photon-molecule interplay

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 175, P. 117715 - 117715

Published: April 16, 2024

To comprehend biological processes for healthcare, environmental, food, and security applications, establishing sensitive, reliable, rapid techniques detecting biomolecular substances is essential. However, conventional labeling methods suffer from reliability reproducibility issues because they influence the experimental outcomes. Therefore, a label-free sensing technique required to overcome these limitations. From this perspective, terahertz have attracted significant attention owing their unique characteristics of low photon energy ability probe overall dielectric responses low-frequency vibrational modes intermolecular interactions. In review, we first present distinctive waves molecules samples through comparison with spectroscopy. Then, challenges opportunities in latest technologies metasurface-based detection are introduced, spanning strategies enhanced absorption cross-sections emerging frontiers exploring chirality strongly coupled polaritons.

Language: Английский

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