Conveners
Poster Presentations: SPARK 2025
- Dipankar Chetia (Department of Physics, North Lakhimpur University)
- Manoranjan Dutta (North Lakhimpur University)
Description
Poster Presentations, SPARK 2025
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Pankaj Mili (Gauhati University)01/11/2025, 11:45Track 04: Astronomy & Astrophysics, Space & Atmospheric Physics, Plasma Physics, Nuclear Physics and Non-linear DynamicsPoster
Thunderstorms are among the most hazardous convective systems in the Indian subcontinent, and their occurrence is particularly frequent over the complex terrain of Northeast India. This study highlights the role of Very High Frequency (VHF) Stratosphere-Troposphere (ST) radar observations from Gauhati University in advancing the understanding of thunderstorm dynamics in Assam. A detailed...
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Dr. Dibya Jyoti Sivananda (Darrang College)01/11/2025, 11:45Track 03: Material Science & Nano-science, Quantum Thermodynamics & Statistical PhysicsPoster
Imperfections in magnetic nanowires can lead to significant changes in their magnetic behavior. Therefore, it is essential to study the effects such defects can have on their magnetic properties. In this work, we perform micromagnetic simulations of magnetic nanowires with artificial defects, and investigate how surface and internal defects influence their hysteresis loops and coercive fields....
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Mr Nishant Bharali (CPP-IPR), Sanjib Kalita (Department of Electronics and Communication Engineering, Assam Don Bosco University, Guwahati, Assam)01/11/2025, 11:45Track 02: Electronics & Photonics, Computational Physics, Applied & Engineering PhysicsPoster
Artificial neutron sources are used in many research and industrial fields, and among them, Inertial Electrostatic Confinement (IEC) fusion devices are well known for their small size, flexible operation, and wide range of applications. These devices can produce neutrons in both continuous and pulsed modes, which makes them suitable for future space power systems, making medical isotopes,...
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Mr Monuj Gogoi, RASNA BARUAH (COTTON UNIVERSITY)01/11/2025, 11:45Track 04: Astronomy & Astrophysics, Space & Atmospheric Physics, Plasma Physics, Nuclear Physics and Non-linear DynamicsPoster
Precision and accurate measurements with neutron beams require a monochromatic, background-free, variable-energy neutron source. Also, the accuracy of absolute normalization of the neutron flux is essential. We are working towards developing a neutron source that meets these criteria. This is also in support of the mandates D1, D3 of the CUPAC-NE Collaboration$^{[1]}$. In particular, IUAC-PAC...
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Monuj Gogoi (Cotton University)01/11/2025, 11:45Track 04: Astronomy & Astrophysics, Space & Atmospheric Physics, Plasma Physics, Nuclear Physics and Non-linear DynamicsPoster
abstract: The Cotton University Particle Accelerator Centre and North East (CUPAC-NE)[1] is developing the first particle accelerator facility in Northeast India, a region with the nation’s highest cancer incidence. This work focuses on Accelerator-Driven Boron Neutron Capture Therapy (AD-BNCT), an emerging cancer treatment based on the $^{10}$B(n,$\alpha$)$^{7}$Li reaction that selectively...
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Mr Priyankush Deka (Tezpur University, India)01/11/2025, 11:45Track 01: High Energy Physics, Gravitation and CosmologyPoster
Abstract: Lorentz Invariance Violation (LIV) refers to the breaking of Lorentz symmetry, which ensures that the laws of nature remain identical for all inertial observers. If such violations exist, they could appear as intrinsic effects even in vacuum, independent of external influences. Studying how LIV modifies standard neutrino oscillation probabilities therefore provides a powerful tool to...
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Mr Dharmendra Kumar (Malaviya National Institute Of Technology Jaipur)01/11/2025, 11:45Track 01: High Energy Physics, Gravitation and CosmologyPoster
Recent results from the Dark Energy Spectroscopic Instrument (DESI) collaboration, based on Baryon Acoustic Oscillation (BAO) measurements, have provided intriguing evidence in favor of dynamical dark energy. In particular, DESI has released a dedicated analysis of dark energy parameterizations by combining their BAO DR2 observations with the Planck 2018 cosmic microwave background data and...
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HIMANSHU SHARMA PATHOK (Dibrugarh University)01/11/2025, 11:45Track 03: Material Science & Nano-science, Quantum Thermodynamics & Statistical PhysicsPoster
Cd1-xMnxS thin films were successfully deposited onto soda–lime glass substrates via the cost-effective chemical bath deposition (CBD) technique at varying deposition durations. Structural characterization using XRD confirmed the formation of a polycrystalline cubic zinc blende structure. The enhanced intensity of the prominent (111) diffraction peak indicates improved crystallinity....
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Mr Deepak Mishra (Department of Physics, Central University of South Bihar Gaya)01/11/2025, 11:45Track 01: High Energy Physics, Gravitation and CosmologyPoster
The direct detection of dark-matter mainly relies on the nuclear recoil energy in detector materials, where only a fraction of the recoil energy contributes to measurable ionization or scintillation signals. This fraction is termed as the quenching factor (QF) and is an essential parameter to reconstruct the nuclear recoil energy accurately. Lindhard's model provides a theoretical framework to...
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Dipika Robidas (Dr), Kakali Bhuyan (North Lakhimpur College (Autonomous)), Ms Spondita Meherayan01/11/2025, 11:45Track 03: Material Science & Nano-science, Quantum Thermodynamics & Statistical PhysicsPoster
The eco-friendly biosynthesis of silver nanoparticles (AgNPs) using plant leaf extract offers a cost-effective and sustainable route to value-added nanomaterials using plant metabolites as both reductants and capping agents. In this study, silver nanoparticles were synthesised using a green method that employed the leaf extract of Houttuynia cordata (Mosondori), an indigenous medicinal plant...
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Ms Pragya Parmita Konwar (Gauhati University)01/11/2025, 11:45Track 02: Electronics & Photonics, Computational Physics, Applied & Engineering PhysicsPoster
Environmental contamination by heavy metals in water and Particulate matter (PM) in air poses severe risk to ecosystems and human health. Heavy Metals such as Arsenic (As), Lead (Pb) and Mercury (Hg) in drinking water are linked to cancers, neurological damage, and developmental disorders, while airborne Particulate Matter especially, PM₂.₅ and PM₁₀ contribute to respiratory and cardiovascular...
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Tanmay Dev (Department of Physics, Gauhati University)01/11/2025, 11:45Track 01: High Energy Physics, Gravitation and CosmologyPoster
In this work, we extend the semiclassical WKB (Wentzel–Kramers–Brillouin) approximation method, previously applied with success to heavy quark–antiquark (meson) systems, to the more challenging and less understood domain of tetraquark states. Tetraquarks, exotic states composed of two quarks and two antiquarks, provide a unique window into the dynamics of multiquark interactions and the...
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Dr Archana Haloi01/11/2025, 11:45Track 04: Astronomy & Astrophysics, Space & Atmospheric Physics, Plasma Physics, Nuclear Physics and Non-linear DynamicsPoster
A theoretical analysis is done to explore the dynamics of nonlinear gravito-electrostatic wave in the molecular clouds. It contains warm lighter electrons, ions and massive positively and negatively charged dust grains. The effects of multi-fluidic viscous drag forces, the gradient forces, naturalistic equilibrium inhomogeneities and nonlinear convective dynamics are also considered. A couple...
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Amar Jyoti Saikia (1 Department of Physics, Dhemaji College 2 Department of Physics, Madhabdev University)01/11/2025, 11:45Track 03: Material Science & Nano-science, Quantum Thermodynamics & Statistical PhysicsPoster
Spectroscopic and DFT insights of Ophthalmic Acid
Primary author: Amar Jyoti Saikia*1,2
Co-author: Lakhi Nath Borah3, Bhargab Borah4
Presenter: Amar Jyoti Saikia
Track Classification: Track 031 Department of Physics, Dhemaji College, Dhemaji
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2 Department of Physics, Madhabdev University
3 Department of Physics, Madhabdev University
4 Department of Physics, DDR College,... -
Dr Dipankar Chetia (North Lakhimpur University), Mr Nikunja Ranjan Borah (North Lakhimpur University)01/11/2025, 11:45Track 02: Electronics & Photonics, Computational Physics, Applied & Engineering PhysicsPoster
Accurately measuring blood glucose levels without drawing blood remains difficult because glucose has weak optical absorption and biological tissue introduces strong background interference. In this work, we explore whether a compact, low-cost multispectral sensor (SparkFun Triad AS7265x, 410–940 nm) can detect glucose-related optical changes. Sugar solutions ranging from 5–35% w/v were...
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Dr Pradhyut Rajkumar (Nabajyoti College, Kalgachia)01/11/2025, 11:45Track 03: Material Science & Nano-science, Quantum Thermodynamics & Statistical PhysicsPoster
Surface-enhanced Raman scattering (SERS) is a highly effective analytical technique for ultrasensitive detection of chemical and biological species. Hybrid plasmonic-semiconductor systems are particularly notable for their reproducibility and multifunctionality. Ag/ZnO/AZO heterostructures achieve enhancement factors (EFs) of about 10⁷ and detection limits as low as 10⁻¹² M [1]. Ag-decorated...
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