Results 111 to 120 of about 141,468 (162)
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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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On the acoustic vaporization of micrometer-sized droplets
The Journal of the Acoustical Society of America, 2004This paper examines the vaporization of individual dodecafluoropentane droplets by the application of single ultrasonic tone bursts. High speed video microscopy was used to monitor droplets in a flow tube, while a focused, single element transducer operating at 3, 4, or 10 MHz was aimed at the intersection of the acoustical and optical beams.
Oliver D, Kripfgans +3 more
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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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Droplet Size of Cooling Tower Fog
Environmental Letters, 1975Fog from cooling towers causes problems of visibility and icing along roadways adjacent to the towers; moreover, the visible plume from the towers offers difficulty in that it is equated by much of the public with air pollution. It is desirable to know the size of the fog droplets in order to plan abatement procedures and to determine the airborne ...
T, Rothman, J O, Ledbetter
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Journal of Biomedical Nanotechnology, 2013
Droplet-based microfluidics is receiving much attention in biomedical research area due to its advantage in uniform size droplet generation. Our previous results have reported that droplet size plays an important role in drug delivery actuated by flagellated bacteria.
Sangmin, Lee +4 more
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Droplet-based microfluidics is receiving much attention in biomedical research area due to its advantage in uniform size droplet generation. Our previous results have reported that droplet size plays an important role in drug delivery actuated by flagellated bacteria.
Sangmin, Lee +4 more
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Applied Optics, 1995
A full-field, time-resolved interferometric method for the characterization of sparse, polydisperse spray systems is reported. The method makes use of the angular intensity oscillations in the wide-angle forward-scatter region. A pulsed laser is used to illuminate a planar sheet through the spray, which is imaged, out of focus, from the 45°direction ...
A R, Glover, S M, Skippon, R D, Boyle
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A full-field, time-resolved interferometric method for the characterization of sparse, polydisperse spray systems is reported. The method makes use of the angular intensity oscillations in the wide-angle forward-scatter region. A pulsed laser is used to illuminate a planar sheet through the spray, which is imaged, out of focus, from the 45°direction ...
A R, Glover, S M, Skippon, R D, Boyle
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Effect of droplet size on the droplet behavior on the heterogeneous surface
Journal of Mechanical Science and Technology, 2017The characteristics of a three-dimensional hemispherical droplet on a heterogeneous surface were studied using the Lattice Boltzmann method (LBM). The hydrophilic surface has a hydrophobic part at the center. The hemispherical droplets are located at the center of the heterogeneous surface. According to the contact angles of hydrophilic and hydrophobic
Ho Yeon Choi +3 more
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Collecting Supercooled Cloud Droplets as a Function of Droplet Size
Journal of Atmospheric and Oceanic Technology, 1992Abstract Supercooled cloud droplets were inertially impacted onto “cloud-sieves” at a mountaintop location. The large cross-sectional areas of the sieve meshes permitted grams of cloud water to be passively collected in minutes. Each sieve was constructed from specific diameter cylindrical strands and collected all cloud droplets larger than a critical
Edward E. Hindman +3 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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On the size distribution of cloud droplets
Atmospheric Research, 1995Abstract The cloud droplet size distribution pattern of statistical significance is addressed after discussing the four uncertainties (subjective, measurement, mathematical and instinctive) about the classical “one-to-one” descriptions. The case study shows that the Weibull distribution n(D) = N0Dq−1exp( −λDq) could be the distribution pattern.
Yangang Liu +3 more
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