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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748

VISUALIZATION OF DROPWISE CONDENSATION USING SURFACE PLASMON RESONANCE (SPR) REFLECTANCE MICROSCOPY

Vinaykumar Konduru
Department of Mechanical Engineering - Engineering Mechanics, Michigan Technological University, Houghton, MI - 49931

Dong Hwan Shin
Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea

Chang Kyoung Choi
Michigan Technological University, Houghton, MI, 49931, USA

Jeffrey S. Allen
Department of Mechanical Engineering - Engineering Mechanics, Michigan Technological University, Houghton, MI - 49931

DOI: 10.1615/TFESC1.mph.012945
pages 2031-2034


键词 Dropwise condensation, surface plasmon resonance, visualization

摘要

Dropwise condensation and droplet coalescence of water on gold film is visualized using Surface Plasmon Resonance (SPR) reflectance microscopy. SPR microscopy can characterize the properties of the thin films of about 200 nm by measuring the changes in the refractive index (RI) of the test medium on thin metal films. In the experiment water is condensed on a gold coated glass slide which also acts as a sensor for the SPR measurements. The process of water condensation and subsequent droplet coalescence is visualized at high speeds. These experiments will help in better understanding the dynamics of contact line during condensation.

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