超音波振動を用いた液滴操作デバイスにおける液滴操作条件の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2016/08/01

タイトル(英語): Study of Droplet Manipulation Condition in Droplet Manipulation Device using Ultrasonic Vibration

著者名: 大西　健一（岡山大学），神田　岳文（岡山大学），小川　尚哉（岡山大学），鈴森　康一（東京工業大学）

著者名(英語): Kenichi Onishi (Okayama Univercity), Takefumi Kanda (Okayama Univercity), Naoya Ogawa (Okayama Univercity), Koichi Suzumori (Tokyo Institute of Technology)

キーワード: 圧電素子，音響放射力，マイクロチャネル，超音波振動，液滴操作　　piezoelectric element，acoustic force，microchannel，ultrasonic vibration，droplet manipulation

要約(英語): In this study, we have fabricated a droplet manipulation device which has a microchannel oscillated by piezoelectric actuator. This device can manipulate droplets by producing a pressure distribution of a standing acoustic field caused by ultrasonic vibration in the microchannel. The manipulated droplet's size has been estimated from the relationship between acoustic force and viscous force. The device has been designed by using a finite element method analysis. Fabricated device has been evaluated by observing droplets in manipulation experiment and measuring a manipulated droplet's distribution. When n-dodecane was used as dispersed phase, this device can manipulate a droplet whose diameter is larger than 20μm when the applied voltage and the driving frequency were 80Vp-p and 2.25MHz. When Silicone oil was used as dispersed phase, the manipulated droplets diameter was larger than 15μm. From these results, we have indicated that the microchannel device can manipulate droplets by using ultrasonic vibration.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.136 No.8 （2016）

本誌掲載ページ: 348-356 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/136/8/136_348/_article/-char/ja/