Dynamic Measurement of Low Contact Angles by Optical Microscopy
| Autor: | James M. Campbell, Hugo K. Christenson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Surface (mathematics)
Materials science business.industry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Characterization (materials science) law.invention Contact angle Optics Experimental uncertainty analysis Optical microscope law General Materials Science Wetting Mica Crystallization 0210 nano-technology business |
| ISSN: | 1944-8244 |
| Popis: | Precise measurement of contact angles is an important challenge in surface science, in the design and characterization of materials and in many crystallization experiments. Here we present a novel technique for measuring the contact angles of droplets between about 2° and 30°, with the lowest experimental uncertainty at the lower end of this range, typically ±0.1°. The lensing effect of a droplet interface produces the appearance of bright circles in low-aperture light, whose diameter is related to the contact angle. The technique requires no specialized equipment beyond an ordinary optical microscope, and may be used to study the dynamic evolution of the contact angle in situ during an experiment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|