Thermal conductivity of nanofluids formed by carbon flurooxide mesoparticles

Dubyk, Kateryna; Isaiev, Mykola; Алексеев, С. А.; Burbelo, R. M.; Lysenko, V. A.

doi:10.1007/s42452-019-1498-9

Cited by 12 publications

(9 citation statements)

References 43 publications

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“…The application of the PA piezoelectric approach in the evaluation of thermal properties of nanofluids was demonstrated in [72], where the dependence of thermal conductivity on the concentration level of the carbon fluorooxide (CFO) [73] mesoparticles was investigated. Different basic liquids were considered, such as polyethylene glycol (PEG), oil, and water.…”

Section: Characterization Of Colloids Liquid Food and Nanofluids Usin...mentioning

confidence: 99%

Application of the Photoacoustic Approach in the Characterization of Nanostructured Materials

et al. 2022

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A new generation of sensors can be engineered based on the sensing of several markers to satisfy the conditions of the multimodal detection principle. From this point of view, photoacoustic-based sensing approaches are essential. The photoacoustic effect relies on the generation of light-induced deformation (pressure) perturbations in media, which is essential for sensing applications since the photoacoustic response is formed due to a contrast in the optical, thermal, and acoustical properties. It is also particularly important to mention that photoacoustic light-based approaches are flexible enough for the measurement of thermal/elastic parameters. Moreover, the photoacoustic approach can be used for imaging and visualization in material research and biomedical applications. The advantages of photoacoustic devices are their compact sizes and the possibility of on-site measurements, enabling the online monitoring of material parameters. The latter has significance for the development of various sensing applications, including biomedical ones, such as monitoring of the biodistribution of biomolecules. To extend sensing abilities and to find reliable measurement conditions, one needs to clearly understand all the phenomena taking place during energy transformation during photoacoustic signal formation. Therefore, the current paper is devoted to an overview of the main measurement principles used in the photoacoustic setup configurations, with a special focus on the key physical parameters.

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Section: Characterization Of Colloids Liquid Food and Nanofluids Usin...mentioning

confidence: 99%

Application of the Photoacoustic Approach in the Characterization of Nanostructured Materials

et al. 2022

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“…PTS is actively involved in the nondestructive characterization of dispersed systems, − although there are almost no nanodiamond studies . Thermal lensing as a relatively simple and reliable method is among the most used photothermal modalities toward this aim. − Still, in carbon nanomaterials, many factors may affect the thermal parameters and, thus, the results of measurements. , Thus, it is relevant to develop a methodology for photothermal-lens measurements of heat-conducting properties of nanodiamond-based dispersed solutions and within the framework of their wider physicochemical diagnostics.…”

Section: Introductionmentioning

confidence: 99%

Photothermal and Heat-Transfer Properties of Aqueous Detonation Nanodiamonds by Photothermal Microscopy and Transient Spectroscopy

et al. 2021

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Characteristic size and heat-transfer parameters of aqueous detonation-nanodiamond dispersions of various brands as carbon-based nanomaterials for nanofluidic tasks were assessed by confocal photothermal microscopy and transient (time-resolved) photothermal-lens modalities. It was shown that only the part of the transient thermal-lens heating curve of the dispersed sample with light-absorbing particles when the photothermally induced thermal field becomes homogeneous should be used to evaluate the bulk thermal diffusivity. For nanodiamond concentrations of 1−4 mg/ mL, a 1−5% increase in thermal diffusivity and thermal conductivity compared with water is observed. A slowdown in the dissipation of the thermal lens effect due to prolonged heat accumulation by nanodiamonds is shown, which is confirmed by significant photothermal signals from nanodiamond clusters according to confocal photothermal microscopy. The size estimation of separate nanodiamond clusters in solution by nonlinear far-field confocal photothermal microscopy is shown; for the selected nanodiamond brands, photothermal microscopy reveals local signals (200−1000 nm) from nanodiamonds that can be assigned to aggregates of ca. 40−70 nm correlated with calculations from the Gibbs−Kelvin equation by differential scanning calorimetry. The discrimination of nonaggregated and aggregated nanodiamonds by photothermal microscopy is demonstrated.

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“…Electrochemical synthesis of luminescent carbon flurooxide nanoparticles was previously described [ 21 ]. This kind of carbon-based nanoparticles has an organic-like nature.…”

Section: Introductionmentioning

confidence: 99%

Bio-distribution of Carbon Nanoparticles Studied by Photoacoustic Measurements

et al. 2022

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Carbon-based nanomaterials are promising for a wide range of biomedical applications, i.e. drug delivery, therapy, and imaging including photoacoustic tomography, where they can serve as contrast agents, biocompatibility and biodistribution of which should be assessed before clinical setting. In this paper, localization of carbon flurooxide nanoparticles, carbon nanodots from β-alanine, carbon nanodots from urea and citric acid and glucose-ethylenediamine nanoparticles (NPs) in organs of Wistar rats were studied by photoacoustic measurements after 24 h of their intravenous injection. 16 ns light pulse from a Q-switched Nd:YAG laser with 1064 nm wavelength was used as an excitation source. The laser-induced photoacoustic signals were recorded with a ring piezoelectric detector. Light absorption by carbon NPs resulted in noticeable enhancement of the photoacoustic amplitude in the tissues where the NPs were accumulated. The NPs were preferably accumulated in liver, kidneys and spleen, and to a lesser extent in heart and gastrocnemius muscles. Together with remarkable fluorescent properties of the studied carbon nanomaterials, their photoacoustic responses allow their application for bi-modal fluorescence-photoacoustic bio-imaging.

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Thermal conductivity of nanofluids formed by carbon flurooxide mesoparticles

Cited by 12 publications

References 43 publications

Application of the Photoacoustic Approach in the Characterization of Nanostructured Materials

Application of the Photoacoustic Approach in the Characterization of Nanostructured Materials

Photothermal and Heat-Transfer Properties of Aqueous Detonation Nanodiamonds by Photothermal Microscopy and Transient Spectroscopy

Bio-distribution of Carbon Nanoparticles Studied by Photoacoustic Measurements

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