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Artikel Jurnal
Investigation of Physical, Opto-Electronics and Insulating Properties of PPPCC Liquid Crystal Molecule by Density Functional Theory (DFT) Method: A Theoretical Approach
In this paper, we have studied the physical, electro-optical and thermal properties of PPPCC liquid crystal molecule. Density functional theory (DFT) with the B3LYP functional and the 6-31G(d,p) basis set is employed for the optimization and analysis of the p-Propoxyphenyl…
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Artikel Jurnal
Conceptual Violation of Energy Conditions in Bouncing Cosmology
This paper focuses on examining the bouncing model within a flat Friedmann–Robertson–Walker (FRW) Universe. The equation of state (EoS) parameter pertaining to the considered model under consideration specifies the Universe's peculiar functioning. The kinematics along with the physical attributes…
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Artikel Jurnal
Fusion of Weakly-Bound ⁹Be With Heavy Nuclei ²⁰⁸PB: A Multi-Body Three-Stage Classical Molecular Dynamics Approach
The fusion of the weakly bound 9Be nucleus with 208Pb is investigated using a multi-body three-stage classical molecular dynamics (3S-CMD) approach. This model explicitly treats 9Be as a cluster of 4He and 5He, allowing for the relaxation of rigid-body constraints on both projectile fragments and…
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Artikel Jurnal
The Enhancing the Yield of Carbon Nanotubes Through the Nanocatalyst-Substrate Interface
In this study, the effect of the nanocatalyst/substrate interface on the yield and quality of carbon nanotubes (CNTs) synthesized by chemical vapor deposition (CVD) was investigated. Nickel oxide (NiO) nanoparticles were prepared using the sol–gel spin-coating method and deposited as thin films…
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Artikel Jurnal
First-Principles Investigation of The Electronic Properties of Monolayer MoS₂ Using DFT-Based QuantumATK Simulations
In this work, the electronic properties of monolayer molybdenum disulfide (MoS2) were investigated using density functional theory (DFT) within the QuantumATK simulation environment. The band structure and density of states (DOS) calculations reveal that MoS2 possesses a direct band gap of 1.74 eV…
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Artikel Jurnal
Deep Learning-Based MRI Denoising Using Noise Statistics Derived from Physical Phantom Measurements
High-quality MRI images are essential for accurate definition of target volumes and organs at risk, as well as for correct registration with CT scans when planning radiotherapy. The aim of this work is to develop a robust denoising method that improves visualization of brain structures and…
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Artikel Jurnal
Cryogenic Material and Electrophysical Changes in Si and GaAs
This study presents a comprehensive investigation of the cryogenic electrical and material behavior of silicon (Si) and gallium arsenide (GaAs) over a wide temperature range from 4 to 300 K and doping concentrations spanning intrinsic conditions up to 1×10¹⁸ cm⁻³. The temperature-dependent…
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Artikel Jurnal
Effect of Impurity Clusters on Optical Properties of Nickel and Copper Doped Single-Crystal Silicon
This paper deals with the influence of impurity atoms on the optical properties of single-crystal silicon doped with nickel and copper during high-temperature diffusion doping. And also, the processes of formation of various chemical compounds involving oxygen, carbon, and atoms of nickel, copper…
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Artikel Jurnal
Optimization of the Optical Properties of Black Silicon Solar Cell
Black silicon (BSi) is an important texturized form of a semiconducting material used in photovoltaic solar cell technology. It is characterized by surface structuration of silicon with very low reflectance. In this paper, we study the optical properties of black silicon in the visible-near…
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Artikel Jurnal
Reduction of Amplitude and Duration of Post-Pulse Oscillations in Bow Tie Active Radiating Antenna
The paper investigates one of the ways of suppressing post-pulse oscillations in ultra-wideband (UWB) electromagnetic pulses radiated by a bow-tie type antenna excited in active mode (the pulse generator is located directly on the radiator). Since this excitation method does not require balancing…
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Artikel Jurnal
Formation of Cu₁₅Si₄/Si Nanophase Films on Silicon Surfaces
We report on the formation of copper silicide nanofilms using different magnetron sputtering modes. Copper silicide thin films were formed by sputtering Cu onto a Si(111) surface heated to 467oC in high vacuum using the mid-RFMS method at a frequency of 100 kHz and a D=70% efficiency. The thickness…
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Artikel Jurnal
Thermal Expansion Characteristics of Planar and Radial Si/GaAs p–n Heterojunctions
We present a comprehensive theoretical and numerical investigation of planar and radial Si/GaAs p–n heterojunctions, focusing on the coupled effects of thermal expansion mismatch and incomplete ionization on their electrostatic and mechanical behavior. The two-dimensional Poisson equation is solved…
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Artikel Jurnal
Photoelectric Properties of ZnₓCd₁-ₓS-Based Photosensitive Semiconductor Structures with Enhanced Ultraviolet Response
The work is devoted to the study of the photoelectric characteristics of an Au-ZnxCd1-xS-Mo structured film injection photodetector sensitive in the ultraviolet and visible region of the spectrum of electromagnetic radiation, with maximum sensitivity in the utraviolet region. It has been…
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Artikel Jurnal
A Pythagorean-Fuzzy Nonlocal Reformulation of Quantum Electrodynamics
Quantum Electrodynamics (QED) is the most precise theory in physics, yet its assumption of pointlike interactions between charged particles and photons leads to ultraviolet divergences that require renormalization. This paper proposes a Pythagorean-Fuzzy Nonlocal Reformulation of QED, embedding…
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Artikel Jurnal
The Stopping Powers and CSDA Range for Positron and Electron in Human Kidney, Lung and Thyroid Organs
This study computed the stopping power of positrons in a few biological tissues in the energy range of 100 eV to 1 MeV. The base of the method is using the modified Bethe-Bloch expression for stopping power and effective atomic number analytical expression including key parameters such as the mean…
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Artikel Jurnal
Investigation of the Physical Properties of Yb³⁺ Doped ZnFe₂O₄ Nanopowders Synthesized by Sol-Gel Method
ZnFe2-xYbxO4 with (x = 0, 0.01, 0.02, 0.03, 0.05, 0.07, and 0.09) have been successfully synthesized by the sol-gel method at 750°C. X-ray diffraction results showed a single phase and crystalline nanopowders of spinel-type structure with cubic symmetry and space group . The lattice parameters…
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Modeling of Thermal Effects in a Polyimide Target Under Pulsed Laser Irradiation
Polyimide is widely valued in modern technology due to its excellent thermal stability and mechanical strength. Understanding how it responds to pulsed laser irradiation is crucial for precise laser-based microfabrication and for interpreting the conditions that can lead to laser induced graphene…
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Artikel Jurnal
DFT Study of the Stability, Electronic, Optical, and Thermal Properties of Two-Dimensional BiBr₃ Semiconductor
Density functional theory (DFT) serves as a first-principles method to thoroughly investigate the stability of the structure and analyse the electronic, optical, and thermal characteristics of two-dimensional bismuth tribromide (2D BiBr3). Ab-initio molecular dynamic (AIMD) simulations reveal that…
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Artikel Jurnal
Development of a Single-Layer TiO₂ Photoanode for Dye-Sensitized Solar Cell (DSSC)
Dye-sensitized solar cells (DSSC) are considered a promising low-cost and flexible alternative to conventional silicon-based photovoltaic technologies. This work reports the fabrication and analysis of DSSC based on a single-layer nanostructured TiO₂ photoanode. The proposed cell architecture is…
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Artikel Jurnal
Composition and Radiation-Induced Variations of Thermal Conductivity in Sn₁-ₓTbₓSe Solid Solutions
In this work, the structural, physicochemical, and thermal transport properties of Sn1-xTbxSe (0 ≤ x ≤ 0.05) alloys were investigated with respect to terbium concentration and γ-irradiation dose. X-ray diffraction and DTA analyses confirmed the formation of orthorhombic substitutional solid…
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