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Droplet Size Effects on Film Drainage between Droplet and Substrate
Langmuir, 2006When a droplet approaches a solid surface, the thin liquid film between the droplet and the surface drains until an instability forms and then ruptures. In this study, we utilize microfluidics to investigate the effects of film thickness on the time to film rupture for water droplets in a flowing continuous phase of silicone oil deposited on solid poly(
Benjamin, Steinhaus +2 more
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Spatially Resolved Droplet Size Measurements
Journal of Engineering for Gas Turbines and Power, 1986This paper encompasses initial tests of a droplet sizing technique, providing spatially and temporally resolved measurements within a liquid spray from an air assist nozzle. The method utilizes laser interferometry. The primary size measurement is based upon the signal visibility; it is validated by the peak intensity of the scattered light.
T. A. Jackson, G. S. Samuelsen
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PANS Pest Articles & News Summaries, 1975
Abstract Use of less liquid to apply pesticide sprays requires more detailed consideration of droplet size. This paper describes various methods of sampling spray droplets in the field, their measurement under a microscope and calculation of the number and volume median diameter of the sampled droplets.
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Abstract Use of less liquid to apply pesticide sprays requires more detailed consideration of droplet size. This paper describes various methods of sampling spray droplets in the field, their measurement under a microscope and calculation of the number and volume median diameter of the sampled droplets.
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Standardizing Spray Droplet Size Distributions
2022An increasing number of companies and institutions have facilities that allow for the evaluation of droplet size associated with spray application from agrochemical nozzles. In response to the newly launched Council of Producers and Distributors of Agrotechnology (CPDA) Application Enhancement Program (AEP), there is an immediate need for a tool that ...
Bradley K. Fritz +2 more
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Size from Specular Highlights for Analyzing Droplet Size Distributions
2009In mechanical engineering, heat-transfer models by dropwise condensation are under development. The condensation process is captured by taking many pictures, which show the formation of droplets, of which the size distribution and area coverage are of interest for model improvement.
Jalba, A.C. +2 more
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Droplet sizing using silicone oils
Crop Protection, 2001Abstract The ISO standard protocol for determining size of droplets suspended between two layers of silicone oils of differing viscosity was evaluated in experiments using a monosize droplet generator. Cross-sectional areas of 0.27-nl droplets captured in silicone oils decreased linearly with time until droplets disappeared at 26 min after ...
M Harz, M Knoche
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1990
Interferometric techniques, which use information encoded in the Doppler burst resulting from the interaction of a particle with a two-beam interference pattern have become practical diagnostic tools for the analysis of complex, two-phase flows.
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Interferometric techniques, which use information encoded in the Doppler burst resulting from the interaction of a particle with a two-beam interference pattern have become practical diagnostic tools for the analysis of complex, two-phase flows.
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Droplet size control in liquid jet breakup
Physics of Fluids, 1996A Boundary Element Method (BEM) has been developed to investigate the nonlinear evolution of the surface of liquid jets injected from circular orifices under unsteady inflow conditions. For fixed wavelength perturbations, the model predicts the formation of main and satellite droplets. The size of the droplets is affected by changes in the perturbation
Hilbing, James H., Heister, Stephen D.
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Micrometer-Sized Water Droplets Induce Spontaneous Reduction
Journal of the American Chemical Society, 2019Bulk water serves as an inert solvent for many chemical and biological reactions. Here, we report a striking exception. We observe that in micrometer-sized water droplets (microdroplets), spontaneous reduction of several organic molecules occurs, pyruvate to lactate, lipoic acid to dihydrolipoic acid, fumarate to succinate, and oxaloacetate to malate ...
Jae Kyoo Lee +3 more
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Control of Droplet Size in Liquid Nanodispensing
Nano Letters, 2006In this Letter, the phenomena and parameters governing the nanoscale dispensing of liquid through an apertured atomic force microscope probe milled by focused ion beam lithography are characterized in detail. We show that the size of deposited droplets can be reproducibly defined by controlling the aperture size on the probe and the surface energies of
Aiping, Fang +2 more
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