High-throughput controllable generation of droplet arrays with low consumption
| Autor: | Yibo Gao, Zhongsheng Wu, Yinyin Lin, Jinbo Wu, Weijia Wen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Diffraction
Work (thermodynamics) Materials science business.industry Femto General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Crystal Viscosity Volume (thermodynamics) Microscopy Optoelectronics 0210 nano-technology business |
| Zdroj: | Applied Surface Science. 442:189-194 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2018.02.055 |
| Popis: | We describe a controllable sliding method for fabricating millions of isolated femto- to nanoliter-sized droplets with defined volume, geometry and position and a speed of up to 375 kHz. In this work, without using a superhydrophobic or superoleophobic surface, arrays of droplets are instantly formed on the patterned substrate by sliding a strip of liquid, including water, low-surface-tension organic solvents and solution, along the substrate. To precisely control the volume of the droplets, we systemically investigate the effects of the size of the wettable pattern, the viscosity of the liquid and sliding speed, which were found to vary independently to tune the height and volume of the droplets. Through this method, we successfully fabricated an oriented single metal–organic framework crystal array with control over their XY positioning on the surface, as characterized by microscopy and X-ray diffraction (XRD) techniques. |
| Databáze: | OpenAIRE |
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