http://localhost:8081/jspui/handle/123456789/124 Thu, 07 May 2026 21:32:43 GMT 2026-05-07T21:32:43Z http://localhost:8081/jspui/handle/123456789/20714 Title: SIMULATION ASSISTED AND EXPERIMENTALLY TESTED 3D PRINTED IONIZATION RADIATION SHIELD Authors: Ratilal, Meher Abstract: This study investigates the lightweight polylactic acid (C3H4O2)n as a material for ionisation radiation shielding applications. Through a combination of Solid- Works software for shield design and Monte Carlo simulations using Geant4 for comprehensive analysis, the effectiveness of the design PLA shield after removing significant weight in the form of hollow spheres with a radius of 4mm and number of hollow spheres(72, 40, 24, 16, 8) in a cuboid shield with dimension( 5.3, 3.8, 2.4)cm in geant4. Using SolidWorks for experimental work and geant4 designed through C++ programming, the PLA shield design demonstrated that a specially designed PLA shield effectively reduces the shield’s weight. Using Geant4 allowed for a detailed examination of gamma-ray interactions with the PLA shield and plots generated in Root software, considering factors such as material composition, thickness, and geometric configuration. To count the gamma radiation, the NaI(Tl) scintillator detector was used for the Cs-137 mono-energetic source with energy 661.7 keV and activity 100kBq, a source made by the BRIT/INDIA. This study advances the ongoing efforts to develop effective and sustainable radiation shielding design solutions. It also highlights the potential of PLA as a model for determining the optimal design for gamma-ray attenuation, which can be applied to higher atomic number elements to achieve the intended outcomes. Sat, 01 Jun 2024 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/20714 2024-06-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/20541 Title: Implementing Digital Logic Blocks using SOA-MZIs for Programmable Photonics Integrated Circuits Authors: Singh, Madhuri Sat, 01 Jun 2024 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/20541 2024-06-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/19113 Title: STUDY OF COUPLING WITH RAPIDITY PARAMETER IN CAVITY OPTOMECHANICAL SYSTEMS Authors: Chowdhary, Yashpal Abstract: In the recent few years Interaction of light and mechanical oscillator of different wavelength and sizes respectively giving us important information in the field of quantum cavity opto-mechanics. The purpose of this report is to explain mechanical cavity system interaction with quantum field. Mon, 01 Nov 2021 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/19113 2021-11-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/19112 Title: SYNTHESIS AND CHARACTERIZATION OF STRONTIUM DOPED BARIUM TITANATE Authors: Haidary, Irfan Ali Abstract: Electro-ceramics have become a crucial component in many modern energy storage devices because of their high dielectric constant and low loss. Due to their piezoelectric, ferroelectric, and electronic device optical capabilities, Materials based on barium titanate (BaTiO3 or BT) with ABO3 perovskite structures can be potentially used in electronic devices. Furthermore, barium titanate-based materials have gained a lot of attention due to their wide variety of applications in the wireless communication, space, and defence sectors. Now a days, BaTiO3-based materials have become a good fit for these applications because of their field-dependent dielectric constant and minimal dielectric loss above its curie temperature. Ferroelectric materials, in general, have a considerable dielectric loss due to piezoelectric granular resonance and domain wall motion. According to experiments, it has been shown that the curie temperature Tc and other electrical characteristics of BaTiO3 may be systematically controlled by using a huge variety of monovalent and aliovalent dopants at the A or B sites. In the present study, the influence of doping a small amount of Strontium(Sr) dopants on the dielectric characteristics and crystal morphologies of BaTiO3 produced using traditional solid-state reaction techniques has been studied. Fri, 01 Jul 2022 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/19112 2022-07-01T00:00:00Z