The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement
Using surface plasmon resonance imaging (SPRi), we have recently shown for the first time the existence of a monolayer water film between droplets during dropwise condensation. This study examines the effect of adsorbed volatile organic compounds (VOCs) on the ultrathin film measurement using SPRi....
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MDPI AG
2020-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/17/5981 |
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| author | Shahab Bayani Ahangar Chan Ho Jeong Fei Long Jeffrey S. Allen Seong Hyuk Lee Chang Kyoung Choi |
| author_facet | Shahab Bayani Ahangar Chan Ho Jeong Fei Long Jeffrey S. Allen Seong Hyuk Lee Chang Kyoung Choi |
| author_sort | Shahab Bayani Ahangar |
| collection | DOAJ |
| description | Using surface plasmon resonance imaging (SPRi), we have recently shown for the first time the existence of a monolayer water film between droplets during dropwise condensation. This study examines the effect of adsorbed volatile organic compounds (VOCs) on the ultrathin film measurement using SPRi. Further, the work presents the proper surface-treatment process that enables measurements of the ultrathin water layer during high-speed imaging of dropwise condensation at 3000 frame per second. In this study, two methods were applied for cleaning the surface (gold-coated glass)—(1) standard cleaning procedure (SCP) using acetone, isopropyl alcohol, and deionized water and (2) SCP followed by air plasma cleaning. This work discusses the effect of the cleaning procedures on surface roughness, contact angle, and surface chemistry using atomic force microscopy, optical microscopy, and an X-ray photoelectron spectroscope meter. The results showed that SCP before the SPRi is a proper surface-treatment method. The effect of adsorbed VOCs during dropwise condensation on a surface treated with SCP was measured to be 0.0025 (reflectivity unit), which was 70% smaller than the reflectance associated with a monolayer water film. The results of this work confirm a monolayer water film observation during the dropwise condensation, which has been reported before. |
| first_indexed | 2024-03-10T16:44:21Z |
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| id | doaj.art-e1ef55f96b364da6a56f3abeb4b1c290 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T16:44:21Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-e1ef55f96b364da6a56f3abeb4b1c2902023-11-20T11:48:41ZengMDPI AGApplied Sciences2076-34172020-08-011017598110.3390/app10175981The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film MeasurementShahab Bayani Ahangar0Chan Ho Jeong1Fei Long2Jeffrey S. Allen3Seong Hyuk Lee4Chang Kyoung Choi5Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USASchool of Mechanical Engineering, Chung-Ang University, Seoul 06974, KoreaDepartment of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USADepartment of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USASchool of Mechanical Engineering, Chung-Ang University, Seoul 06974, KoreaDepartment of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USAUsing surface plasmon resonance imaging (SPRi), we have recently shown for the first time the existence of a monolayer water film between droplets during dropwise condensation. This study examines the effect of adsorbed volatile organic compounds (VOCs) on the ultrathin film measurement using SPRi. Further, the work presents the proper surface-treatment process that enables measurements of the ultrathin water layer during high-speed imaging of dropwise condensation at 3000 frame per second. In this study, two methods were applied for cleaning the surface (gold-coated glass)—(1) standard cleaning procedure (SCP) using acetone, isopropyl alcohol, and deionized water and (2) SCP followed by air plasma cleaning. This work discusses the effect of the cleaning procedures on surface roughness, contact angle, and surface chemistry using atomic force microscopy, optical microscopy, and an X-ray photoelectron spectroscope meter. The results showed that SCP before the SPRi is a proper surface-treatment method. The effect of adsorbed VOCs during dropwise condensation on a surface treated with SCP was measured to be 0.0025 (reflectivity unit), which was 70% smaller than the reflectance associated with a monolayer water film. The results of this work confirm a monolayer water film observation during the dropwise condensation, which has been reported before.https://www.mdpi.com/2076-3417/10/17/5981volatile organic compoundssurface treatmentsurface plasmon resonancethin film measurementXPSdropwise condensation |
| spellingShingle | Shahab Bayani Ahangar Chan Ho Jeong Fei Long Jeffrey S. Allen Seong Hyuk Lee Chang Kyoung Choi The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement Applied Sciences volatile organic compounds surface treatment surface plasmon resonance thin film measurement XPS dropwise condensation |
| title | The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement |
| title_full | The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement |
| title_fullStr | The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement |
| title_full_unstemmed | The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement |
| title_short | The Effect of Adsorbed Volatile Organic Compounds on an Ultrathin Water Film Measurement |
| title_sort | effect of adsorbed volatile organic compounds on an ultrathin water film measurement |
| topic | volatile organic compounds surface treatment surface plasmon resonance thin film measurement XPS dropwise condensation |
| url | https://www.mdpi.com/2076-3417/10/17/5981 |
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