This paper investigates the efficacy of photodynamic activation (PDA) using herbal extract in combination with low-power laser treatment against both Gram-positive (Streptococcus mutans) and Gram-negative (Klebsiella pneumoniae) bacteria. The study explores the threats posed by these bacteria and highlights their resistance mechanisms. Various experiments, including colony formation assays, minimal inhibitory concentration tests, and bacterial […]
The hydrophobic nature of synthetic polymers poses a substantial barrier since it limits cell-seeding and proliferation scaffold performance. To overcome this challenge, the present research attempts to employ in-situ UV electrospinning and plasma surface modification techniques to fabricate a three-dimensional PAN/PVA-gelatin scaffold. The proposed scaffold holds great potential in mitigating hydrophobicity limitations, thereby facilitating […]
In this paper, the applicability of the Machine Learning (ML) technique in predicting the structural characteristics of water exposed by the plasma discharge is studied. For this purpose, the structural characteristics of water including pH, Electrical Conductivity (EC), Oxidation Reduction Potential (ORP), Total Dissolved Solution (TDS), and salt is experimentally measured before and after exposing […]
In the present work, plasma surface interaction for constant mean free path has been investigated by choosing a three-component electronegative warm plasma where electrons are described by non-extensive statistics, and both negative and positive ions by fluid approach. Here, the finite value of ion-neutral collisions, the temperature of negative and positive ions, the mass of […]
The study explores the use of nanofibers for enzyme immobilization, leveraging their high contact area and controlled cavities. By employing ultraviolet (UV) irradiation on a polymeric blend of polyvinyl alcohol (PVA) and poly acrylonitrile (PAN) during electrospinning, nanofibers were fabricated for glucose oxidase (GOD) immobilization. UV treatment enhanced carboxyl group presence on nanofiber surfaces, as […]
The plasma filamentation instability (FI), also known as the beam-Weibel instability, is responsible for the generation of magnetic fields and the acceleration of particles within collisionless astrophysical plasmas. In the present study, we employ Particle-In-Cell (PIC) simulation to model the filamentation instability driven by sub-relativistic electron-positron counter-streaming pairs in one spatial dimension moving with velocity […]
Electron cyclotron resonance ion source (ECRIS) is designed and simulated using COMSOL software. The 2.45 GHz microwave is injected through a coaxial cable into a cylindrical chamber with a diameter of 9 cm and a length of 10 cm. Two coils are employed to produce a flat-B magnetic field profile and two resonance zones on […]
Magnetoelectric sensors, based on magnetostrictive-piezoelectric composites, exhibit the highest sensitivity at electromechanical resonance frequencies. Consequently, adjusting the operation frequency of these sensors for various applications becomes crucial. Using comprehensive simulations based on the finite element method, different structures can be investigated to obtain the operation frequency, magnetoelectric coefficient, and sensitivity. The structures used comprise FeGa/AlN/Silicon […]
The fisheye system belongs to the family of ultra-wide field of view lenses and has various applications in science, industry, surveillance and artistic fields. Such lenses can cover a field of view of 180 degrees or even larger in the shape of a hemisphere, and therefore can provide the possibility of imaging a large part […]
This study examines the effect of aromatic ring numbers on electronic and transport properties in rotaxane molecular junctions using density functional theory (DFT) calculations. Five rotaxane molecules (R-1 to R-5) with varying ring counts (1 to 5) and 149 (R-1) to 422 (R-5) atoms. Our results showed that the ring count significantly influenced properties like […]
