Generation and control of plasma in microfluidic channels

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03585
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plasma electronics
• Research Institution: Osaka City University
• Principal Investigator: SHIRAFUJI Tatsuru 大阪市立大学, 大学院工学研究科, 教授 (10235757)
• Research Collaborator: GOTO Motonobu 名古屋大学, 大学院工学研究科, 教授 (80170471) ; TACHIBANA Akira 大阪市立大学, 大学院工学研究科, 准教授 (80305614) ; TANAKA Kenji 大阪市立大学, 大学院工学研究科, 助教 (20254386) ; TANAKA Kenji 京都工芸繊維大学, 電気電子工学系, 教授 (90193458) ; IMAI Shin'ichi パナソニック株式会社, 全社CTO室技術戦略部, 主幹 ; SAWADA Yasushi エア・ウォーター株式会社, 堺テクノロジーセンター, 部長 ; KATO Eiichi HACK JAPANホールディングス株式会社, ウルトラファインバブル事業部, 顧問 ; TAKAHASHI Koji リビングエナジー, 代表
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 液中プラズマ / プラズマ弾丸 / 人工流路 / ３Ｄプリンタ / マイクロ化学 / ナノ粒子 / 水浄化 / 骨再生

Outline of Final Research Achievements

A gas/liquid mixed medium is flowed through a micro flow channels fabricated by a 3D printer and a pulse voltage is applied to realize a system in which a large number of microplasma are in contact with liquid. This system can be applied to nanoparticle synthesis, decomposition of organic contaminants in water, hydrogen peroxide synthesis. It has been also shown that process control is possible by designing the flow channel structure. In addition, by using a ultra-thin micro reaction field directly beneath the liquid surface where the direct effects of plasma can reach, thin films with embedded nanoparticles have been fabricated. It has been also shown that size-regurated high density nanoparticles are formed in the films. Furthermore, it has been confirmed that the atmospheric plasma bullets propagate through the micro flow channels. This technology can be applied to the hydrophilic treatment of bone regeneration scaffolds.

Free Research Field

プラズマ材料プロセス