Thermal diffusivity of rhodamine 6G incorporated in silver nanofluid measured using mode-matched thermal lens technique

2010 ◽  
Vol 283 (2) ◽  
pp. 313-317 ◽  
Author(s):  
Santhi Ani Joseph ◽  
Misha Hari ◽  
S. Mathew ◽  
Gaurav Sharma ◽  
Soumya ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Rhodamine 6G

Thermal Diffusivity Dependence with Highly Concentrated Graphene Oxide/Water Nanofluids by Mode-Mismatched Dual-Beam Thermal Lens Technique

2021 ◽  
Vol 42 (7) ◽  
Author(s):  
J. L. Jiménez-Pérez ◽  
G. López-Gamboa ◽  
J. F. Sánchez-Ramírez ◽  
Z. N. Correa-Pacheco ◽  
A. Netzahual‑Lopantzi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Dual Beam

scholarly journals Studies on Fluorescence Efficiency and Photodegradation of Rhodamine 6G Doped PMMA Using a Dual Beam Thermal Lens Technique

2002 ◽  
Vol 20 (2-4) ◽  
pp. 99-110 ◽  
Author(s):  
Achamma Kurian ◽  
Nibu A. George ◽  
Binoy Paul ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Thermal Lens ◽  
Fluorescence Quantum Yield ◽  
Laser Excitation ◽  
Rhodamine 6G ◽  
Fluorescence Emission ◽  
Concentration Quenching ◽  
Dye Molecules ◽  
Dual Beam ◽  
Fluorescence Efficiency ◽  
Absolute Fluorescence

In this paper we report the use of the dual beam thermal lens technique as a quantitative method to determine absolute fluorescence quantum efficiency and concentration quenching of fluorescence emission from rhodamine 6G doped Poly(methyl methacrylate) (PMMA), prepared with different concentrations of the dye. A comparison of the present data with that reported in the literature indicates that the observed variation of fluorescence quantum yield with respect to the dye concentration follows a similar profile as in the earlier reported observations on rhodamine 6G in solution. The photodegradation of the dye molecules under cw laser excitation is also studied using the present method.

Allotropic transformation instigated thermal diffusivity of soot nanofluid: Thermal lens study

2019 ◽  
Vol 31 (11) ◽  
pp. 117106 ◽  
Author(s):  
M. S. Swapna ◽  
Vimal Raj ◽  
S. Sankararaman
Keyword(s):  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Allotropic Transformation

scholarly journals Correction to: Determination of the Dependence of Thermal Diffusivity with Moringa Concentration by Thermal Lens as a Sensitive Experimental Technique

2020 ◽  
Vol 41 (8) ◽  
Author(s):  
R. Carbajal-Valdéz ◽  
J. L. Jiménez-Pérez ◽  
G. Gamboa-López ◽  
Z. N. Correa-Pacheco ◽  
C. Hernández-Aguilar ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Experimental Technique ◽  
Thermal Lens

Thermal Diffusivity of Multi-Walled Carbon Nanotubes Dispersed in Oleic Acid

2012 ◽  
Vol 21 ◽  
pp. 125-130 ◽  
Author(s):  
Alex Junior de Freitas Cabral ◽  
Clascídia Aparecida Furtado ◽  
Cristiano Fantini ◽  
Petrus Alcantara Jr.
Keyword(s):  
Carbon Nanotubes ◽  
Oleic Acid ◽  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Theoretical Expression ◽  
Thermal Lens Spectrometry ◽  
Multi Walled Carbon Nanotubes ◽  
Spectrometry Technique ◽  
Transient Thermal ◽  
Walled Carbon Nanotubes

Suspensions of oleic acid with carbon nanotubes were prepared. Using a thermal lens experimental setup, the thermal diffusivity of oleic acid in presence of multi-walled carbon nanoparticles with different concentrations was measured. The results show that, the thermal diffusivity increases with the increase of nanotubes concentration, enhancing the thermal diffusivity in the solution. Modification in the thermal diffusivity as function of quantity of carbon nanotubes was investigated, for a constant volume of oleic acid 10 mL. The diffusivities were obtained by using the thermal lens spectrometry technique. The characteristic time constant of the transient thermal lens was obtained by fitting the theoretical expression to the experimental data.

Thermal-lens probing of the enhanced thermal diffusivity of gold nanofluid-ethylene glycol mixture

2014 ◽  
Vol 119 (1) ◽  
pp. 453-460 ◽  
Author(s):  
B. Rajesh Kumar ◽  
N. Shemeena Basheer ◽  
Sunil Jacob ◽  
Achamma Kurian ◽  
Sajan D. George
Keyword(s):  
Thermal Diffusivity ◽  
Ethylene Glycol ◽  
Thermal Lens
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