Freezing of water droplets on micro-pillar patterned and smooth hydrophobic and hydrophilic surfaces
The concept of ice freezing process on subcooled surface has continue to baffle researchers. Numerous industries are heavily affected by this ubiquitous phenomenon especially in cold climate. Accidental discoveries reveal that the phobocity status represented by the lotus plant can prolong the freez...
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| Format: | Final Year Project |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/141515 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The concept of ice freezing process on subcooled surface has continue to baffle researchers. Numerous industries are heavily affected by this ubiquitous phenomenon especially in cold climate. Accidental discoveries reveal that the phobocity status represented by the lotus plant can prolong the freezing delay. This unique discovery serves as a foundational study for analyst to further explained surface mechanism of the plant so that in the future it may be implemented solve critical freezing issue. Therefore, this report aims to investigate the effects of structural surface by mimicking the phobocity status of the lotus plant on redefining the important parameters. The freezing process throughout the experiment will be captured using a digital high-speed camera, to identify the characteristics of the freezing droplets. This prominent device is crucial for researchers to breakdown specific section of the freezing process to analyze the differences and study how various kinds of surface structure affect the freezing time of both the nucleation period as well as the supercooled period. Cold climates can be very dynamic, therefore this report also intends to introduce deposited droplets against sessile droplets to further investigate their different freezing behaviour. |
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