نتایج جستجو برای: charged liquid droplets
تعداد نتایج: 276591 فیلتر نتایج به سال:
Mass spectrometry (MS) owes its remarkable rise as a bioanalytical tool to the development of two “soft” ionization techniques: matrix-assisted laser desorption/ ionization (MALDI) (1,2) and electrospray ionization (ESI) (3). The salient feature of soft ionization is that a wide range of analytes, from small metabolites to very large biomolecular systems, can be transferred intact into the gas ...
A simple optical deflection technique was used to monitor the vibrations of microlitre pendant droplets of deuterium oxide, formamide, and 1,1,2,2-tetrabromoethane. Droplets of different volumes of each liquid were suspended from the end of a microlitre pipette and vibrated using a small puff of nitrogen gas. A laser was passed through the droplets and the scattered light was collected using a ...
Droplet impacting on solid or liquid interfaces is a ubiquitous phenomenon in nature. Although complete rebound of droplets is widely observed on superhydrophobic surfaces, the bouncing of droplets on liquid is usually vulnerable due to easy collapse of entrapped air pocket underneath the impinging droplet. Here, we report a superhydrophobic-like bouncing regime on thin liquid film, characteriz...
A new model reveals that patterns of internal fluid flow control whether self-propelling water droplets in oil follow linear or curved trajectories.
Capillary forces provide a ubiquitous means of organizing micro- and nanoscale structures on substrates. In order to investigate the mechanism of capillary self-assembly and to fabricate complex ordered structures, precise control of the meniscus shape is needed. We present a precision instrument that enables deposition of liquid droplets spanning from 2 nl to 300 μl, in concert with mechanical...
Droplets made of a mixture two liquids with different volatilities take on pancake shape.
Numerical investigation of heat transfer during drop impact, spreading, recoil, and rebound/break up has been carried out for water droplets with and without surfactant additives. The numerical model is based on a finite volume formulation on a structured grid. A volume-of-fluid (VOF) technique is used to track the deforming liquid-air interface. Comparisons between the numerical results and ex...
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