122 超音波霧化における霧化表面形状の最適化

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タイトル別名
  • 122 Optimization of Surface Shape in Ultrasonic Atomization

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Techniques about thin film making and surface treatment by organic printing have been considered as technical development for sensor and electric device production in recent years. Ultrasonic atomization is balanced with particle size and efficiency of printing and suited technology for large area coating application. Two types of atomizers applied the ultrasonic are used in general. One method is excitation in liquid called by a nebulizer and the other method is longitudinal oscillation by using Langevin type transducer. The nebulizer is suitable for a humidifier but its atomizing does not have directional quality. However, the Langevin type transducer with a nozzle can generate directional atomization. In addition, particles of liquids depend on the frequency of the ultrasonic. Thus when the nozzle moves with scanning on the surface, the fine thin film coating would be realize. In this report, we used a high speed camera to observe and estimated about the state of the liquid particle generation about droplet generation in ultrasonic atomization. It was confirmed that the liquid revel on the nozzle tip end was surf with capillary wave and the particles of the liquid caused to break off a crest of the waves. Therefore, the particle size depends on the ultrasonic wavelength and the amplitude of the ultrasonic on the nozzle tip end affects its atomization rate and acceptable viscosity of the liquid.

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詳細情報 詳細情報について

  • CRID
    1573668927273634048
  • NII論文ID
    110010051746
  • NII書誌ID
    AA11901770
  • ISSN
    13480235
  • 本文言語コード
    ja
  • データソース種別
    • CiNii Articles

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