Open AccessТеплопередача в капле воды с красителем и наночастицами при двойном лазерном воздействии
Author(s) -
Н.А. Мыслицкая,
Р.Ю. Боркунов,
М.В. Царьков,
В.А. Слежкин,
И.Г. Самусев,
Ю.Н. Антипов,
В.В. Брюханов
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.08.49543.264-19
Subject(s) - thermoluminescence , infrared , excited state , fluorescence , laser , materials science , analytical chemistry (journal) , drop (telecommunication) , chemistry , photochemistry , optics , optoelectronics , atomic physics , luminescence , telecommunications , physics , chromatography , computer science
The heat transfer in a water droplet with eosin and ablative silver nanoparticles under laser visible stationary (λ = 532 nm) and infrared pulsed (λ = 10.6 μm) exposure (Vis-IR double laser exposure) in the temperature range from 0.2 to 50 ° C was studied. It was found that after Vis-IR exposure, the vibrational system of triplet states of dye molecules in the droplet was excited with the generation of thermoluminescence, the decay kinetics of which reflects the new distribution of the electron-vibrational modes in the fluorescence spectrum of dye molecules. For small droplet sizes with silver nanoparticles (d <1.0 mm) after infrared exposure (τ = 50 ms), a thermal front was generated with thermoluminescence radiation and it was travelling at a speed of 0.85 cm / s in an aqueous medium. The simulation study of heat transfer processes in a drop during the formation of a heat wave was carried out.