arXiv subjects

Rashmi

Publications and source records attributed to Rashmi.

4 recordsLinked to original sources

arXiv2025

Implementation Of Wildlife Observation System

By entering the habitats of wild animals, wildlife watchers can engage closely with them. There are some wild animals that are not always safe to approach. Therefore, we suggest this system for observing wildlife. Android phones can be used by users to see live events. Wildlife observers can thus get a close-up view of wild animals by employing this robotic vehicle. The commands are delivered to the system via a Wi-Fi module. As we developed the technology to enable our robot to deal with the challenges of maintaining continuous surveillance of a target, we found that our robot needed to be able to move silently and purposefully when monitoring a natural target without being noticed. After processing the data, the computer sends commands to the motors to turn on. The driver motors, which deliver the essential signal outputs to drive the vehicle movement, are now in charge of driving the motors.

cs.RO↗

arXiv2024

Spectroscopic Analysis of Fully Heavy Pentaquarks

Motivated by the discovery of the fully charmed tetraquark state $X(6900)$ in the invariant mass spectrum of $J/\psi$ pairs by the LHCb collaboration, this study explores the potential existence of fully heavy pentaquark states. We systematically investigate the low-lying s-wave fully heavy pentaquark states across all possible configurations. The classification of these states is performed using the Young-Yamounachi bases through the Young-tableau technique. We analyze the mass spectrum and magnetic moments of pentaquarks with quantum numbers $J^P$= $\frac{1}{2}^{\pm}$,$\frac{3}{2}^{\pm}$ and $\frac{5}{2}^{\pm}$ utilizing effective mass and screened charge schemes. Our findings are compared with various theoretical models, providing valuable insights for future experimental studies.

hep-ph↗

arXiv2024

Water Aging Effects on Graphene Nanoplatelets and Multi-walled Carbon Nanotube Reinforced Epoxy Glass Fiber Nanocomposites

Nanocomposites reinforced with hybrid fillers of multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) were developed, aimed at improving electrical and morphological properties of the hybrid nanocomposites while reducing the cost of the final product. GNPs and MWCNTs nanofillers have shown improved electrical and morphological properties with most polymers. In this work, the effect of short-term water aging for 1440 h on MCWNTs and GNPs reinforced epoxy glass fiber nanocomposites was studied. Epoxy nanocomposites were prepared with varying combinations of MCWNTs and GNPs (2:1, 2:2, and 2:3wt. %) as conducting fillers and their electrical conductivity was evaluated after short-term water aging. It was shown that the addition of MCWNTs and GNPs enhanced the electrical conductivity of composites: A low percolation threshold was achieved with 2 wt. % MCWNTs and 3 wt. % GNPs. The addition of MCWNTs enhanced the electrical conductivity and dielectric constant, confirming the synergistic effect of CNTs as multifunctional filler. Microstructural investigations and morphology of nanocomposites were investigated using Fourier transform-infrared spectroscopy and X-ray diffraction. The novelty of this work arises from the combination of two conducting fillers with different geometry and aspect ratios as well as different dispersion characteristics. The results obtained from the electrical measurements after water aging on hybrid nanocomposites indicates slight increases in electrical conductivity.

physics.app-ph↗

arXiv2013

Effect of Thermal Annealing on Boron Diffusion, Micro-structural, Electrical and Magnetic properties of Laser Ablated CoFeB Thin Films

We report on Boron diffusion and subsequent crystallization of Co$_{40}$Fe$_{40}$B$_{20}$ (CoFeB) thin films on SiO$_2$/Si(001) substrate using pulsed laser deposition. Secondary ion mass spectroscopy reveals Boron diffusion at the interface in both amorphous and crystalline phase of CoFeB. High-resolution transmission electron microscopy reveals a small fraction of nano-crystallites embedded in the amorphous matrix of CoFeB. However, annealing at 400$^\circ$C results in crystallization of CoFe with \textit{bcc} structure along (110) orientation. As-deposited films are non-metallic in nature with the coercivity (H$_c$) of 5Oe while the films annealed at 400$^\circ$C are metallic with a H$_c$ of 135Oe.

cond-mat.mtrl-sci↗