Article
Nanometre-sized droplets from a gas dynamic virtual nozzle
Author/s | Mühlig, Kerstin
Gañán-Calvo, Alfonso M. Andreasson, Jakob Larsson, D.S.D Hajdua, Janos Svenda, Martin |
Department | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos |
Publication Date | 2019 |
Deposit Date | 2020-12-17 |
Published in |
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Abstract | This paper reports on improved techniques to create and characterize
nanometre-sized droplets from dilute aqueous solutions by using a gas dynamic
virtual nozzle (GDVN). It describes a method to measure the size distribution ... This paper reports on improved techniques to create and characterize nanometre-sized droplets from dilute aqueous solutions by using a gas dynamic virtual nozzle (GDVN). It describes a method to measure the size distribution of uncharged droplets, using an environmental scanning electron microscope, and provides theoretical models for the droplet sizes created. The results show that droplet sizes can be tuned by adjusting the gas and liquid flow rates in the GDVN, and at the lowest liquid flow rates, the size of the water droplets peaks at about 120 nm. This droplet size is similar to droplet sizes produced by electrospray ionization but requires neither electrolytes nor charging of the solution. The results presented here identify a new operational regime for GDVNs and show that predictable droplet sizes, comparable to those obtained by electrospray ionization, can be produced by purely mechanical means in GDVNs. |
Project ID. | DPI2016-78887-C3-1-R |
Citation | Mühlig, K., Gañán-Calvo, Alfonso M., Andreasson, J., Larsson, D.S.D., Hajdua, J. y Svenda, M. (2019). Nanometre-sized droplets from a gas dynamic virtual nozzle. Journal of Applied Crystallography, 52, 800-808. |
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