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Audio tampering identification : phase portrait analysis as a promising tool for audio forensics
S. S. Aswathy, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2023, published scientific conference contribution abstract

Keywords: audio forensics, tampering, signal processing
Published in RUNG: 09.01.2024; Views: 276; Downloads: 2
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Speckle interferometric detection of temperature- dependent microplastic leaching from paper cup : a thermal lens study
M. A. Rithwiq, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2023, published scientific conference contribution abstract

Keywords: speckle, microplastics
Published in RUNG: 09.01.2024; Views: 295; Downloads: 2
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Thermal lens technique : a novel tool for the detection and quantification of microplastics in water
P. Anju Abraham, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2023, published scientific conference contribution abstract

Keywords: thermal lens, microplastics
Published in RUNG: 09.01.2024; Views: 291; Downloads: 2
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Eco-conscious nanofluids : exploring heat transfer performance with graphitic carbon nitride nanoparticles
Vijayakumar Gokul, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2023, original scientific article

Abstract: Abstract The work explores the heat transfer capabilities of semiconducting graphitic carbon nitride (g-C3N4) nanofluids. Also, it presents a sustainable and eco-friendly method for synthesizing g-C3N4 nanoparticles using commercially available rice flour as a natural carbon precursor through hydrothermal treatment. The synthesized sample subjected to various characterizations, including analysis of their structure, morphology, thermal properties, and optical properties. The optical bandgap (2.66 eV) is deduced through Tauc plot analysis and reveals the semiconducting nature of the sample. The formation of g-C3N4 is confirmed by various spectroscopic techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and Raman spectroscopy. Thermogravimetric analysis (TGA) demonstrates the nanoparticles’ excellent thermal stability up to 550 °C, indicating potential applications in heat transfer fluids. The investigation of concentration-dependent thermal diffusivity variation using the sensitive mode mismatched dual beam thermal lens technique highlights the potential of g-C3N4 semiconductor nanofluid as an organic and metal-free additive in industry-demanding coolant applications.
Keywords: thermal lens, nanofluids
Published in RUNG: 05.01.2024; Views: 340; Downloads: 4
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