Researchers at ASU have invented a contact angle goniometer capable of controlling micro and nanoliter volumes under acute nonstandard conditions. The invention is unlike anything on the market, and accomplishes this by localized preferential condensation. A tiny, thermal-conducting metal tip is encapsulated within a thermal insulator with only a sub-millimeter portion of the tip exposed. The condensation assembly is mounted over an adjustable 3-axis sample stage within a high pressure vessel equipped with optical windows for viewing, and the temperature of the goniometer tip and sample stage is controlled using nitrogen gas to balance resistive heating and cooling. This invention provides a simple yet cost effective alternative to pipette based goniometers and facilitates contact angle studies at previously unattainable pressures and temperatures.
- Condensation Studies
- Detergent, Insecticide, and Printer Ink Development
- Petroleum Refining
- Physical Vapor Deposition (PVD) Processing
- Polymer, Plastic, and Textile Coatings
- Semiconductor Fabrication
Benefits and Advantages
- Inexpensive – Cost effective alternative to high pressure pipette goniometers.
- Innovative – Enables contact angle studies at previously unattainable pressures and temperatures.
- Precise – Greater control over droplet formation.
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