A self-converging atomized mist spray device using surface acoustic wave

Atsushi Yabe, Yuichiro Hamate, Motoaki Hara, Hiroyuki Oguchi, Sumito Nagasawa, Hiroki Kuwano

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We developed a surface acoustic wave (SAW) atomizer, which can produce a narrow mist spray of submillimeter width. The atomized mist spray converges spontaneously and thus requires no additional spray converging system. Key features in achieving the self-converging atomization are two-port interdigital transducers (IDTs) with a groove in between. The SAW is driven by applying an electric field on IDTs patterned on a piezoelectric substrate. The two-port IDTs drive SAWs in opposite directions toward the groove, which then separates the SAW-driven streaming on each side of the groove. Two types of self-converging atomizer were experimentally demonstrated, a line and a point atomizer. While the former uses parallel IDTs to atomize water from the groove into a thin-planar-shaped spray, the latter uses arc-shaped SAW lenses to focus the SAW into a certain point in the groove to atomize water into a narrow point spray. In addition, by adding a water reservoir, continuous operation of up to 30 s was achieved with the submillimeter narrow point atomizer.

本文言語English
ページ(範囲)701-710
ページ数10
ジャーナルMicrofluidics and Nanofluidics
17
4
DOI
出版ステータスPublished - 2014 1 1
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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