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21.
We thought it was special, but it's not
Petra Mišmaš, Marko Simonović, 2021, published scientific conference contribution abstract

Found in: ključnih besedah
Keywords: verbs, stress, Slovenian, distributed morphology
Published: 11.06.2021; Views: 824; Downloads: 34
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22.
The role of substrate on thermal evolution of Ag/TiO[sub]2 nanogranular thin films
Vincenzo Balzano, Emanuele Cavaliere, Mattia Fanetti, Sandra Gardonio, Luca Gavioli, 2021, original scientific article

Found in: ključnih besedah
Summary of found: ...nanogranular composite thin film, substrate driven properties, morphology, optical absorption, Ag/TiO2...
Keywords: nanogranular composite thin film, substrate driven properties, morphology, optical absorption, Ag/TiO2
Published: 03.12.2021; Views: 536; Downloads: 35
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23.
Weathering induced morphological modification on the thermal diffusivity of natural pyrrhotite
Mohanachandran Nair Sindhu Swapna, V. Gokul, Vimal Raj, R. Manu Raj, S. N. Kumar, Sankaranarayana Iyer Sankararaman, 2021, original scientific article

Abstract: Natural pyrrhotites have gained significant attention due to their interesting electronic, antimicrobial, and chemical properties. The present work attempts to explore the morphology-induced modifications in the thermal characteristics of natural pyrrhotite due to ageing. The morphological, elemental, structure, optical, and thermal characterisations help in understanding the effect of ageing. The effects of five years of ageing of the sample are (i) Field Emission Scanning Electron Microscopic analysis reveals a morphological transformation from flakes to agglomerated powder, (ii) elemental analyses suggest the ageing induced compositional modification (iii) the Tauc plot analysis shows a bandgap energy modification from 1.46 eV to 1.92 eV, (iv) X-ray Diffraction (XRD), Fourier Transform Infrared, and X-ray photoelectron spectroscopic studies affirm the formation of oxy-hydroxides (v) the XRD data indicates an increase of dislocation density, and (vi) Photoluminescence study shows a deep violet emission evidenced through the CIE plot. The study by the thermal lens technique shows a lowering of thermal diffusivity study by 23%, due to the morphological modifications, adsorbed/chemisorbed hydroxyl groups, and the formation of secondary compounds due to oxidation and weathering. The phonon boundary scattering, weathering induced smaller grain size, reduced phonon mean free path, and point defects also account for the lowering of the thermal diffusivity value and thereby influencing its properties.
Found in: ključnih besedah
Summary of found: ...chemical properties. The present work attempts to explore the morphology-induced modifications in the thermal characteristics of natural pyrrhotite...
Keywords: pyrrhotite, thermal diffusivity, thermal lens, ageing, morphology
Published: 30.06.2022; Views: 137; Downloads: 1
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24.
Laser-induced thermal lens study of the role of morphology and hydroxyl group in the evolution of thermal diffusivity of copper oxide
Riya Sebastian, Mohanachandran Nair Sindhu Swapna, Vimal Raj, Sankaranarayana Iyer Sankararaman, 2022, original scientific article

Abstract: The paper explores the evolution of thermal behavior of the material by studying the variations in thermal diffusivity using the single beam thermal lens (TL) technique. For this purpose, the decomposition of Cu(OH)2 into CuO is studied in a time range up to 120 h, by subjecting the sample to morphological, structural, and spectroscopic characterizations. The time evolution of thermal diffusivity can be divided into three regions for demonstrating the dynamics of the reaction. When the reaction is complete, the thermal diffusivity is also found to be saturated. In addition to the morphological modifications, from rods to flakes, the variations in the amount of hydroxyl group are attributed to be responsible for the enhancement of base fluid’s thermal diffusivity by 165%. Thus the study unveils the role of hydroxyl groups in the thermal behavior of CuO.
Found in: ključnih besedah
Keywords: thermal diffusivity, CuO, thermal lens, morphology, hydroxyl group
Published: 04.07.2022; Views: 105; Downloads: 0
.pdf Fulltext (2,26 MB)

25.
26.
Fractal analysis as a potential tool for surface morphology of thin films
SWAPNA MOHANACHANDRAN NAIR SINDHU, 2017, original scientific article

Found in: ključnih besedah
Keywords: Fractals.thin film, AFM, surface morphology
Published: 05.07.2022; Views: 95; Downloads: 0
.pdf Fulltext (562,80 KB)

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