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160 results
  • Weakly charged droplets fundamentally change impact dynamics on flat surfaces. [Journal Article]
    Soft Matter 2019; 15(28):5548-5553Gao F, Yi H, … Deng W
  • Electric charges are often found in naturally or artificially formed droplets, such as raindrops and those generated by Kelvin's water dropper. In contrast to the impact of neutral droplets on a flat solid surface upon which a thin convex lens shape layer of the gas film is typically formed, we show that the delicate gas thin film can be fundamentally altered for even weakly charged droplets. As …
  • Electrowetting Using a Microfluidic Kelvin Water Dropper. [Journal Article]
    Micromachines (Basel) 2018; 9(3)Yazdanshenas E, Tang Q, Zhang X
  • The Kelvin water dropper is an electrostatic generator that can generate high voltage electricity through water dripping. A conventional Kelvin water dropper converts the gravitational potential energy of water into electricity. Due to its low current output, Kelvin water droppers can only be used in limited cases that demand high voltage. In the present study, microfluidic Kelvin water droppers …
  • A multi-species powder dropper for magnetic fusion applications. [Journal Article]
    Rev Sci Instrum 2018; 89(10):10K121Nagy A, Bortolon A, … Roquemore AL
  • We present a device for controlled injection of a variety of materials in powder form. The system implements four independent feeder units, arranged to share a single vertical drop tube. Each unit consists of a 80 ml reservoir, coupled to a horizontal linear trough, where a layer of powder is advanced by piezo-electric agitation at a speed proportional to the applied voltage, until it falls into …
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