JP2020082027A - 液滴収集デバイス - Google Patents
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Abstract
Description
起点から放射状に延び、起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備えた第1世代の流路と、
起点から放射状に延び、起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備え、かつ第1世代の流路よりも大きさが縮小された第2世代の流路とを備え、
前記第2世代の流路は第1世代の流路と同じ向きで前記第1世代の流路と連結し、
前記第2世代の流路のテーパ状流路部の一つが、前記第1世代の流路のテーパ状流路部の一つの先端部と重なっており、前記第1世代の流路のテーパ状流路部の一つの基端から、前記第2世代の流路のテーパ状流路部の一つの先端まで、親水性流路が単調に先細りする、液滴収集デバイス。
前記三角形の領域の各々において、前記起点から分岐して各三角形の領域内の各々を通るn−2個の流路部が、前記第1世代の流路の3つの流路部のうちの一つを形成し、各第1世代の流路の3つの流路部のそれぞれに前記第2世代の流路が連結する項1に記載の液体収集デバイス。
前記三角形の領域の各々において、前記起点から分岐して前記n個の三角形の領域内の各々を通るn個の流路が、前記第1世代の流路の3つの流路のうちの一つを形成し、各第1世代の流路の3つの流路のそれぞれに第2世代の流路が連結する項1に記載の液体収集デバイス。
第1実施形態
図1に示されるように、本発明の第1実施形態の液滴収集デバイス1は、疎水性表面3を有する基板2を備え、該疎水性表面3内には親水性流路4が設けられている。
次に、本発明の第2実施形態の液滴収集デバイスの親水性流路について説明する。第1実施形態の液滴収集デバイスの親水性流路と同じ符号については説明を省略する。
次に、本発明の第3実施形態の液滴収集デバイスの親水性流路について説明する。第1実施形態の液滴収集デバイスの親水性流路と同じ符号については説明を省略する。
次に、本発明の第4実施形態の液滴収集デバイスの親水性流路について説明する。第1実施形態の液滴収集デバイスと同じ符号については説明を省略する。
本発明の液滴収集デバイスは、水蒸気、雨、汗等の収集の目的に限らず、高分子ファイバーの配向制御や細胞集団の走化性制御等へも応用することができる。
(方法)
ポリエチレンテレフタレート(PET)のフィルム表面に、酸化チタンとCapstone(R) ST-100とを含有するエタノール混合分散液を噴霧して乾燥させ、疎水性コーティングを得た。その後、疎水性コーティングの膜厚を段差計で評価した。疎水性コーティングに紫外光を照射する前後で接触角を測定することで親水性の評価を行った。さらに、液滴収集デバイスの親水性流路に対応する空間充填木構造のネガ型フォトマスクを作製し、紫外線を照射し、超親水性の開放型流路をパターニングした。
厚さ16.7±2.8 μmの疎水性コーティングが形成された。そして、疎水性コーティングへの紫外光照射前後で、水滴の接触角が156°から7°に変化し、このコーティングによる基板への超疎水表面の形成と、紫外光照射による表面の超親水化が示された。
第1の起点から放射状に延び、前記第1の起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備えた第1世代の流路と、
前記第1世代の流路に設けられた第2の起点から放射状に延び、前記第2の起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備え、かつ第1世代の流路よりも大きさが縮小された第2世代の流路とを備え、
前記第2世代の流路は、前記第1世代の流路から分岐すると共に、前記第1世代の流路のと同じ向きで前記第1世代の流路と連結し、
前記第2世代の流路のテーパ状流路部の一つが、前記第1世代の流路のテーパ状流路部の一つの先端部と重なっており、前記第1世代の流路のテーパ状流路部の一つの基端から、前記第2世代の流路のテーパ状流路部の一つの先端まで、親水性流路が単調に先細りする、液滴収集デバイス。
前記三角形の領域の各々において、前記第1の起点から分岐して各三角形の領域内を通るn−2個の流路部の各々が、前記第1世代の流路のn−2個の流路部のうちの一つを形成し、各第1世代の流路のn−2個の流路部のそれぞれに前記第2世代の流路が連結する項1に記載の液体収集デバイス。
前記三角形の領域の各々において、前記第1の起点から分岐して前記n個の三角形の領域内を通るn個の流路の各々が、前記第1世代の流路のn個の流路部のうちの一つを形成し、各第1世代の流路のn個の流路部のそれぞれに第2世代の流路が連結する項1に記載の液体収集デバイス。
Claims (9)
- 疎水性表面を有する基板を備え、該疎水性表面内に親水性流路が設けられた液滴収集デバイスであって、前記親水性流路は、
起点から放射状に延び、起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備えた第1世代の流路と、
起点から放射状に延び、起点から離れるにつれて単調に先細りする複数のテーパ状流路部を備え、かつ第1世代の流路よりも大きさが縮小された第2世代の流路とを備え、
前記第2世代の流路は第1世代の流路と同じ向きで前記第1世代の流路と連結し、
前記第2世代の流路のテーパ状流路部の一つが、前記第1世代の流路のテーパ状流路部の一つの先端部と重なっており、前記第1世代の流路のテーパ状流路部の一つの基端から、前記第2世代の流路のテーパ状流路部の一つの先端まで、親水性流路が単調に先細りする、液滴収集デバイス。 - 第2世代の流路の形状は第1世代の流路の形状と略同一である請求項1に記載の液滴収集デバイス。
- 第1世代の流路の複数のテーパ状流路部の各々に第2世代の流路が連結し、複数の下降する世代の流路を通じて縮小された流路が繰り返されるフラクタル構造を有する請求項1又は2に記載の液滴収集デバイス。
- 前記フラクタル構造の第1世代から数えた世代の数が2〜9である請求項3に記載の液体収集デバイス。
- 前記第1テーパ状流路部のテーパ角度が2〜9°である請求項1〜4のいずれかに記載の液体収集デバイス。
- 前記第1世代の流路の複数のテーパ状流路部が3個又は4個テーパ状流路部である請求項1〜5のいずれかに記載の液体収集デバイス。
- 第1世代の流路の複数のテーパ状流路部が3個であり、第1世代の流路の起点と第2世代の流路の起点とが重なるように、かつ前記1世代の流路と180°回転対称な向きに、前記第2世代の流路がさらに設けられている請求項1〜5のいずれかに記載の液体収集デバイス。
- 前記親水性流路が、n角形の領域(n≧4)を構成し、n角形の頂点の一つである起点と前記n角形の他の頂点とを結ぶ仮想線分により前記n角形の領域n−2個の三角形の領域に分割され、
前記三角形の領域の各々において、前記起点から分岐して各三角形の領域内の各々を通るn−2個の流路部が、前記第1世代の流路の3つの流路部のうちの一つを形成し、各第1世代の流路の3つの流路部のそれぞれに前記第2世代の流路が連結する請求項1に記載の液体収集デバイス。 - 前記親水性流路が、n角形の領域(n≧3)を構成し、該n角形の領域に存在する起点と前記n角形の頂点とを結ぶ仮想線分によりn個の三角形の領域に分割され、
前記三角形の領域の各々において、前記起点から分岐して前記n個の三角形の領域内の各々を通るn個の流路が、前記第1世代の流路の3つの流路のうちの一つを形成し、各第1世代の流路の3つの流路のそれぞれに第2世代の流路が連結する請求項1に記載の液体収集デバイス。
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CN114870547A (zh) * | 2022-04-28 | 2022-08-09 | 西安交通大学 | 一种不对称锥刺阵列油雾收集装置及其制备、收集方法 |
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EP3944895A1 (en) * | 2020-07-31 | 2022-02-02 | Imec VZW | Device for manipulating droplets through ultrasound |
CN111964503B (zh) * | 2020-08-26 | 2022-03-25 | 南京航空航天大学 | 一种强化滴状冷凝的三维图案化表面 |
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Non-Patent Citations (1)
Title |
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甲斐 洋行,外: "階層的枝分かれ構造を持つ開放型流路による液滴収集機構", 化学とマイクロ・ナノシステム, vol. 17, no. 2, JPN6020015726, 1 October 2018 (2018-10-01), pages 33 - 36, ISSN: 0004303839 * |
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CN114870547A (zh) * | 2022-04-28 | 2022-08-09 | 西安交通大学 | 一种不对称锥刺阵列油雾收集装置及其制备、收集方法 |
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