固体壁のない液体の流れと制御

Peter Dunne^1,2, Takuji Adachi^1,3, Arvind Arun Dev²

¹Université de Strasbourg, CNRS, ISIS, Strasbourg, France.

Nature

|May 8, 2020

まとめ

研究者らは新型の液体内流体チャネルを開発し固体壁を避け自動治癒型で閉塞しないシステムを開発しました磁場による安定化により繊細な液体を優しく効率的に運ぶことができます

科学分野:

マイクロ流体
流体力学
材料科学

背景:

流体回路を小型化すると,流量制限や汚れを含む固いチャネル壁の課題に直面します.
壁の相互作用を軽減する既存の方法 (例えば,コーティング,電湿) には限界があります.
ドロップレット微流体とシートフローは固体壁を避けますが,連続した液体の流れが必要です.

研究の目的:

固体壁の必要性を排除する新しい流体チャネルシステムを開発する
自己治癒性で塞がらないマイクロフリウイドチャネルを作ります
特に繊細な生物学的サンプルに対して,精密な流量制御と穏やかな液体輸送を証明する.

主な方法:

水性液体チャネルは混じらない磁気液体で囲まれています
四極磁場は液体内の液体界面を安定させ流動的なチャネルを作り出します
外部永久磁石を使用した磁気静止ポンプは,物理的な接触なしに液体の流れを制御します.

主要な成果:

液体内の液体チャネルは,自己治癒,非詰まり,および防腐性を持っています.
マグネトスタルティックポンプは,効率的なバルブ,分割,合併,および液体のポンプを可能にします.
全身の血液の輸送は,周回抽出と比較して,血解の大きさの減少を示した.

結論:

この液体内の液体のアプローチは,特に繊細な液体の場合は,従来の微流体チャネルに優れた代替手段を提供します.
このシステムは,高圧なしに微小規模で精密な流れ制御と穏やかな輸送を可能にします.
潜在的応用には,高度なマイクロ流体回路と,生物学的流体処理の改善が含まれます.

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