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| Schematic representation of a flat laser display. b) Schematic representations of a self-standing droplet oscillator that attenuates its Q-factor upon elongation induced by an external electric field. c) A scanning electron microscopic image of the self-standing droplet. d) An array of self-standing droplets. The inset shows the unmagnified image. e) Histograms of the diameter (d, left, n = 167) and interval (right, n = 306) of the droplets. |
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