Spontaneous rotation of a droplet induced by the Marangoni flow is analyzed in a two-dimensional system. The droplet with the small particle which supplies a surfactant at the interface is considered. We calculated flow field around the droplet using the Stokes equation and found that advective nonlinearity breaks symmetry for rotation. Theoretical calculation indicates that the droplet spontan...

Infrared extinction optical depth (500-5000 cm(-1)) has been measured with a Fourier transform infrared spectrometer for clouds produced with an ultrasonic nebulizer. Direct measurement of the cloud droplet size spectra agree with size spectra retrieved from inversion of the extinction measurements. Both indicate that the range of droplet sizes is 1-14 mum. The retrieval was accomplished with a...

Atomisation of an aqueous solution for tablet film coating is a complex process with multiple factors determining droplet formation and properties. The importance of droplet size for an efficient process and a high quality final product has been noted in the literature, with smaller droplets reported to produce smoother, more homogenous coatings whilst simultaneously avoiding the risk of damage...

Size-based droplet sorting can be used to improve the monodispersity of droplet populations in chemical assays, and as a label-free measurement in cell-in-droplet assays. Several microfluidic approaches can efficiently perform binary sorting based on a size threshold; however, the thresholds are typically fixed by the channel design. This paper presents a passive drop sorting technique in which...

Accurate spray characterization helps to better understand the pesticide spray application process. The goal of this research was to present the proof of principle of a droplet size and velocity measuring technique for different types of hydraulic spray nozzles using a high speed backlight image acquisition and analysis system. As only part of the drops of an agricultural spray can be in focus ...

Multicanonical ensemble simulations for the simulation of first-order phase transitions suffer from exponential slowing down. Monte Carlo autocorrelation times diverge exponentially with free energy barriers ∆F , which in L boxes grow as L. We exemplify the situation in a study of the 2D Ising-model at temperature T/Tc = 0.63 for two different lattice manifolds, toroidal lattices and surfaces o...

Most studies of the effect of aerosols on cloud radiative properties have considered only changes in the cloud droplet concentration, neglecting changes in the spectral shape of the cloud droplet size distribution. However, it has been shown that that the spectral dispersion of the cloud droplet size distribution (defined as the ratio of the standard deviation to the mean radius of the droplet ...

This paper represents the ability of the newly introduced One-dimensional Rainbow Technique (ORT) to characterize the evaporation of monodispersed droplet in the large range of environment temperature. At the low temperature (room temperature), the small change of drop size is measured from the phase shift of ripple structure. The size change, as small as 10 nm for 80 μm droplet, can be measure...