Thermal diffusivity of neutral red dye using dual beam thermal lens technique: A comparison on the effects using nano pulsed laser ablated silver and gold nanoparticles

Prakash, A. P. Gnana; Pathrose, Bini P.; Nampoori, V. P. N.; Radhakrishnan, P.; Mujeeb, A.

doi:10.1016/j.physe.2018.10.001

Cited by 20 publications

(14 citation statements)

References 29 publications

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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. Thus, the aim of this study was to use PTM and time-resolved photothermal modalities as complementary methods to estimate photothermal and heat-transfer properties of hydrosols of detonation nanodiamonds for various brands and comparison with other methods.…”

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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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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“…The degradation of NR was confirmed by the decrease of absorption of dye solution in the presence of AGC NCs at 273 and 527 nm in UV-Vis spectra. 122 Fig. 9[i] shows the percentage catalytic degradation of the dye.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Evaluation of the multifunctional activity of silver bionanocomposites in environmental remediation and inhibition of the growth of multidrug-resistant pathogens

2022

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“…Thermal lens technique is commonly used for the thermal diffusivity measurements of materials like dyes, quantum dots, nanoparticles etc. [11][12][13][14][15][16][17] The thermal diffusivity can be found out using the following equation.…”

Section: B Dual Beam Thermal Lens Experimental Setupmentioning

confidence: 99%

Thermal Lens Technique as a Potential Optical Tool

Niyati¹

2021

IJRASET

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The spectroscopic characterization of materials involves the use of various optical tools. Spectrometers, interferometers etc, are some of the examples of optical tools. Thermal lens technique is one of the potential optical tools for the thermal characterization of different materials. The thermal lens effect is a photothermal effect which results when energy from a laser beam is absorbed by a sample, causing heating of the sample along the beam path. In this paper an overview of thermal lensing, its significance as potential optical tool and its applications are discussed. Index Terms: Optical tool, Photothermal spectroscopy, TLS application, Thermal diffusivity

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Thermal diffusivity of neutral red dye using dual beam thermal lens technique: A comparison on the effects using nano pulsed laser ablated silver and gold nanoparticles

Cited by 20 publications

References 29 publications

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

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

Evaluation of the multifunctional activity of silver bionanocomposites in environmental remediation and inhibition of the growth of multidrug-resistant pathogens

Thermal Lens Technique as a Potential Optical Tool

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