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4. Porosity engineering in cellulose-chitosan composites via sporopollenin incorporation for wound healing applicationsMohanachandran Nair Sindhu Swapna, Petra Makorič, Dorota Korte, Chieu D. Tran, Mladen Franko, 2023, published scientific conference contribution abstract Keywords: cellulose, chitosan, composite, wound healing, photothermal beam deflection, porosity
Published in RUNG: 16.10.2023; Views: 644; Downloads: 0
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5. Tailoring the thermal diffusivity of polyvinylidene fluoride via carbon source integration : a photothermal beam deflection studyMohanachandran Nair Sindhu Swapna, Dorota Korte, Sankaranarayana Iyer Sankararaman, 2023, original scientific article Keywords: cellulose, camphor soot, lignin, PVDF, photothermal techniques, beam deflection, hydroxyl groups
Published in RUNG: 21.08.2023; Views: 786; Downloads: 6
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7. Influence of P3HT:PCBM ratio on thermal and transport properties of bulk heterojunction solar cellsDorota Korte, Egon Pavlica, Domen Klančar, Gvido Bratina, Michal Pawlak, Ewa Gondek, Peng Song, Junyan Liu, B. Derkowska-Zielińska, 2023, original scientific article Keywords: organic bulk-heterojunction solar cells, polymer-fullerene solar cells, photothermal beam deflection spectrometry, non-radiative recombination, thermal diffusivity, frequency domain methods
Published in RUNG: 09.01.2023; Views: 1402; Downloads: 19
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9. Thermal diffusivity downscaling of molybdenum oxide thin film through annealing temperature-induced nano-lamelle formation: a photothermal beam deflection studyS. Soumya, Vimal Raj, Mohanachandran Nair Sindhu Swapna, Sankaranarayana Iyer Sankararaman, 2021, original scientific article Abstract: The present work proposes a method of downscaling the thermal diffusivity (α)
of MoO3 thin films through annealing temperature-induced nano-lamelle formation. The
thermal diffusivity modification of the MoO3 films, prepared by the doctor blade method,
is investigated by the sensitive transverse photothermal beam deflection technique. The X-ray diffraction analysis confirms the structural phase transformation from monoclinic to
orthorhombic in the films annealed from 300 to 450 °C. The thermal induced anisotropy of
the film is evident from the variation of the morphology index and texture coefficient. The
field emission scanning electron microscopic analysis unveils the morphology modifications
from blocks to the nano-lamelle structure with layers of average thickness ~ 77 nm. The
thermal diffusivity measurement reveals a 53% reduction upon annealing the film to 450 °C.
The drastic reduction is achieved through the annealing temperature-induced nano-lamelle
formation and the phase transformation from monoclinic to orthorhombic in the MoO3 films.
Keywords: thermal diffusivity, molybdenum oxide, thin film, nano-lamelle, photothermal beam deflection
Published in RUNG: 04.07.2022; Views: 1097; Downloads: 26
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10. Thermal diffusivity of molybdenum oxide nanowire film: a photothermal beam deflection studyMohanachandran Nair Sindhu Swapna, 2021, original scientific article Abstract: The paper reports the preparation of thin film with MoO3 nanowires (NWs) by the doctor blade method and the
study of its thermal diffusivity (α) by the sensitive photothermal beam deflection (PTD) method. When the Field
Emission Scanning Electron Microscopic and Atomic Force Microscopic analysis unveil its morphology as NW
bundles, the X-ray diffraction analysis reveals the structure to be orthorhombic. The NWs formed are of diameter
~ 20 nm and length up to 5 μm. The standardization of the transverse PTD setup is done by determining the
value of α of iron, which agrees well with literature reports. The thermal diffusivity of MoO3 NW film is obtained
as 0.0036 cm2
/s, which is 9.48% of its bulk counterpart. The reduction in the thermal diffusivity of NW makes it
a suitable candidate for thermoelectric applications.
Keywords: Nanowires
Molybdenum oxide
Photothermal beam deflection
Thermal diffusivity
Published in RUNG: 04.07.2022; Views: 1149; Downloads: 0
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