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Monitoring the evaporation of a sessile water droplet by means of integrated photonic resonator
Journal of Physics D: Applied Physics ( IF 3.4 ) Pub Date : 2020-01-13 , DOI: 10.1088/1361-6463/ab651d
Lucas Garnier 1 , Herv Lhermite 2 , Vronique Vi 1 , Octave Pin 3 , Quentin Liddell 3 , Herv Cormerais 2, 3 , Etienne Gaviot 4 , Bruno Bche 1, 2
Affiliation  

We have investigated the behavior of the optical transduced signal of a photonic integrated polymer micro resonator as an evaporating water droplet is positioned upon it. The photonic chip is fabricated by means of deep-UV photolithography, and the circuits are made of polymer UV210. The device is then arranged in an optical bench so as to perform relevant measurements thanks to a broadband laser for the excitation of the resonators and an optical spectrum analyzer remotely controlled by a Matlab software for the acquisition and treatment of data. By dynamically tracking the free spectral range (FSR) of the optical mode, we come up with a signature of the thermodynamic evaporation process. In order to correlate this signature to the evaporation speed of the water droplet, a lateral camera is disposed to measure the evolution of the geometrical characteristics of the droplet, while weight measurements are performed thanks to a precision balance. These measurements provide a numer...

中文翻译:

通过集成的光子谐振器监测无水水滴的蒸发

我们已经研究了光子集成的聚合物微谐振器的光转换信号的行为,因为蒸发的水滴位于其上。该光子芯片通过深紫外光刻法制造,电路由聚合物UV210制成。然后,由于使用宽带激光器激励谐振器,并使用Matlab软件远程控制的光谱分析仪进行数据采集和处理,因此该设备被布置在光具座中,以便执行相关的测量。通过动态跟踪光学模式的自由光谱范围(FSR),我们得出了热力学蒸发过程的特征。为了使该特征与水滴的蒸发速度相关联,设置了一个侧面照相机以测量液滴的几何特性的演变,同时由于精确的平衡而进行了重量测量。这些测量提供了很多...
更新日期:2020-01-13
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