Abstract

Heat transfer in a water drop containing eosine and ablation silver nanoparticles induced by stationary visible laser irradiation, λ = 532 nm, and pulsed IR laser irradiation, λ = 10.6 μm (VIS–IR double laser irradiation), has been studied in the temperature interval of 0.2–50°C. It has been found that the vibratory system of triplet states in a dye molecule heats up after VIS–IR laser irradiation, causing thermoluminescence. The thermoluminescence decay kinetics indicates a new distribution of electron vibration modes in the fluorescence spectrum of dye molecules. If the drop with nanoparticles is small (d < 1 mm), pulsed IR irradiation (τ = 50 ms) gives rise to a thermal front causing thermoluminescence, which travels in the drop with a velocity of 0.85 cm/s. Heat transfer in the drop during the formation of a thermal wave has been simulated.

中文翻译：

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双激光辐照下含染料和纳米颗粒的水滴中的热传递

摘要

在温度区间内研究了由曙红和消融银纳米颗粒在静止的可见激光照射下引起的水滴传热，λ= 532 nm，以及脉冲IR激光照射引起的λ= 10.6μm（VIS-IR双激光照射）温度为0.2–50°C。已经发现，染料分子中三重态的振动系统在VIS-IR激光辐照后会变热，从而引起热致发光。热致发光衰减动力学表明染料分子的荧光光谱中电子振动模式的新分布。如果纳米颗粒的液滴很小（d<1 mm），脉冲IR辐射（τ= 50 ms）引起热前沿，导致热致发光，该热致发光在液滴中以0.85 cm / s的速度传播。模拟了热波形成过程中液滴的传热。