Ultrasmall Volume Single-Droplet Viscometry: Monitoring Cornering Instabilities on Omniphobic Polydimethylsiloxane Brushes
| Autor: | Behrooz Khatir, Kevin Golovin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dodecane 02 engineering and technology Decane Hexadecane 01 natural sciences chemistry.chemical_compound Viscosity Electrochemistry medicine General Materials Science Dimethylpolysiloxanes Composite material Spectroscopy Polydimethylsiloxane 010405 organic chemistry Viscometer Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics 6. Clean water 0104 chemical sciences chemistry Volume (thermodynamics) Castor oil 0210 nano-technology medicine.drug |
| Zdroj: | Langmuir : the ACS journal of surfaces and colloids. 37(44) |
| ISSN: | 1520-5827 |
| Popis: | Viscosity is an essential fluid property that is important for industrial and laboratory applications. For biological, complex, and/or precious liquid samples, the available volume of fluid is limited, yet there are few existing techniques to measure the viscosity of small volumes of liquids. We report a facile method to measure the viscosity of liquids by monitoring the sliding of single-cornered droplets on surfaces coated with an omniphobic film that minimizes the contact-angle hysteresis. The developed measurement method was capable of accurately characterizing the viscosity of various liquids and showed statistically equivalent values when compared to the literature, for fluids with viscosities ranging from 0.35 to ∼800 mPa s (acetone to castor oil). Using the developed single-droplet viscometer, the minimum volume required to measure the viscosity of hexadecane, dodecane, toluene, and ethanol was |
| Databáze: | OpenAIRE |
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