Psnsr Srikar

Indian Institute of Technology Tirupati · physics

The influence of plasma operating parameters such as gas medium, electrode distance, applied voltage, gas flow rate, and their interdependency on reactive species generation was investigated. Full factorial design-based response surface methodology (RSM) was used to establish the correlation between the operating parameters. The optimization studie...

The present work employs two advanced machine learning (ML) techniques: the Random Forest (RF) model and Deep Neural Network (DNN) for the non-invasive spectroscopic diagnostic of a non-thermal atmospheric pressure Argon plasma jet. By integrating the ML techniques with OES and the collisional radiative (CR) model, real-time prediction of electron...

The paper demonstrates the versatility of surface dielectric barrier discharge (SDBD) in degrading brilliant red X3B (azo dye), direct yellow 44 (direct dye), and turquoise blue H5G (reactive dye) in textile wastewater. The influence of wastewater characteristics, such as pH (4‐10), background inorganic salts (NaCl, Na2SO4, and Na2CO3), and type of...

The present work includes the calculation of electron impact excitation cross sections for the fine structure resolved transitions in Sn I and Sn II, using relativistic distorted wave approximation with the aid of Dirac–Fock multiconfigurational wavefunctions. For Sn I, the cross sections are calculated for the excitations from the fine structure r...

In this study, we employed a non-invasive approach based on the collisional radiative (CR) model and optical emission spectroscopy (OES) measurements for the characterization of gas tungsten arc welding (GTAW) discharge and quantification of Zn-induced porosity during the GTAW process of Fe-Al joints. The OES measurements were recorded as a functio...

https://iwraonlineconference.org/wp-content/uploads/2023/01/3-10-Balkhi.pdf

The study describes developing an energy-efficient and scalable alternative to conventional non-thermal plasma systems by integrating surface dielectric barrier discharge (SDBD) and UV-C radiation sources. The unprecedented enhancement in the mineralisation rate of an azo dye (brilliant red 5B) by the hybrid reactor (photo-SDBD) is demonstrated tho...

Atmospheric pressure plasma jets (APPJs) have attracted significant research attention due to their simple design and low fabrication cost. Several studies have been conducted to demonstrate the viability of APPJs in various applications such as surface treatment, biomedical, material synthesis, and water treatment. However, tuning the plasma opera...

Water contamination from complex organic molecules has become a significant cause of worry due to conventional treatment systems' poor response to their removal. Therefore, developing an improved and environmentally friendly treatment system is critical to achieving water quality objectives and protecting human health. The present work develops a n...

The current work reports a detailed calculation of electron impact excitation cross sections for the fine structure transitions of Mo from the manifolds 4d55s, 4d45s2, 4d6, and 4d55p to the manifolds 4d55s, 4d45s2, 4d6, 4d55p, 4d45s5p, 4d55d, 4d56s, 4d45s6s and 4d57s, using the Relativistic Distorted Wave (RDW) approximation for plasma modeling app...

The paper investigates the ability of a surface dielectric barrier discharge (SDBD) based reactor to mineralize complex organic molecules such as azo dyes in water. The high operational flexibility, low maintenance, and energy efficiency of SDBD over most of the other plasma systems motivated its selection. Also, SDBD produces even discharge over a...

The increasing occurrence of contaminants such as pharmaceutically active compounds, endocrine-disrupting compounds, nanomaterials, surfactants, personal care products is an emerging concern in the water sector. Some of these emerging contaminants are toxic to all life forms, are bio-resistant, and can sustain after primary and secondary wastewater...

This work reports average electron temperature ( T e) and electron density ( n e) of an atmospheric argon rotating gliding arc ( R G A), operated in glow-type mode, under transitional and turbulent flows. Both T e and n e were calculated near the shortest ( δ) and longest ( Δ) gap between the electrodes, by two different methods using two separate...

In the present work, fabrication and evaluation of low density glass - epoxy (LDGE) composites suitable for absorbing minimum 80 per cent of incident microwave energy in 8 GHz to 12 GHz (X-band) is reported. LDGE composites having different densities were fabricated using a novel method of partially replacing conventional S-glass fabric with low de...