JP2021502546A - 検体検出のためのpH制御デバイス、センサデバイス及びpHを制御するための方法 - Google Patents
検体検出のためのpH制御デバイス、センサデバイス及びpHを制御するための方法 Download PDFInfo
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Abstract
Description
−酸性媒体中:
・アノード正端子における2H2O → O2 + 4H+ + 4e−、ここでpHは、プロトンの生成により低下する;
・カソード負端子における、2H+ + 2e− → H2、ここでpHは、プロトンの消費により上昇する;
−塩基性媒体中:
・アノード正端子における、4OH− → O2 + 2H2O + 4e−、ここでpHは、OH−の消費により低下する;
・カソード負端子における、2H2O + 2e− → H2 + 2OH−、ここでpHは、OH−の生成により上昇する。
応用例
10、710:基板
12、512、312、312a、412、412a、512、612、612a:電極の組
20、320、420:構造化中間層
22、322、322a、528、622、622b、22、422、422a、722:流路
26、326、426:入口ポート
24、324、324a、424、424a:毛管ポンプ
30、730:構造化上部層
36:装填パッド
321、421、623:接合部
521:pH発生作用電極
522:pH発生対電極
523、524:pH検知電極
525、625、625a、725:検出電極
526:参照電極
541、641:コントローラ
622:共通のpH発生対電極
719:周囲の表面
Claims (20)
- pH制御デバイスであって、
基板と、
前記基板上に定められ、液体を受け入れるように適合された流路と、
電極の組であって、
pH発生作用電極及びpH発生対電極を含む一対のpH発生電極と、
参照電極と、
pH検知電極と、
を含む電極の組と、
コントローラと、
を備え、
前記電極の組は、前記流路に沿って配置され、前記pH検知電極が前記流路上の前記液体の部分のpHの変化を受けるように配置され、
前記コントローラは、前記pH検知電極と前記参照電極とを介して得られる信号に基づいて前記pH発生電極間に電圧を印加するように構成され、前記pH発生作用電極及び前記pH発生対電極において前記液体のpHを変更するようになっている、
pH制御デバイス。 - 前記pH検知電極は、前記一対のpH発生電極間に配置される、請求項1に記載のpH制御デバイス。
- 前記pH検知電極は、前記pH発生対電極よりも前記pH発生作用電極の近くに配置され、前記検知電極が、主として前記pH発生作用電極によって生じる前記液体の前記部分のpHの変化を受けるようになっている、請求項2に記載のpH制御デバイス。
- 前記pH検知電極を囲む2つの付加的電極をさらに備え、前記付加的電極を介して、前記pH検知電極を横切る電位勾配をサンプリングする、請求項1に記載のpH制御デバイス。
- 前記流路が第1の流路であり、
前記第1の流路から接合部において分岐する第2の流路が前記基板上に定められ、動作中に前記液体を受け入れるようになっており、
前記参照電極は、前記第2の流路内に配置される、
請求項2に記載のpH制御デバイス。 - 前記液体を前記第1の流路に装填するための入口ポートが前記基板上に定められ、前記接合部は、前記入口ポートと前記電極の組との間で、前記pH発生電極の上流にある、
請求項5に記載のpH制御デバイス。 - 前記接合部が、前記pH発生電極間に配置される、請求項5に記載のpH制御デバイス。
- 前記参照電極が、前記pH発生電極のうちの1つである、請求項1に記載のpH制御デバイス。
- センサデバイスであって、
基板と、
前記基板上に定められ、液体を受け入れるように適合された流路と、
電極の組であって、
pH発生作用電極及びpH発生対電極を含む一対のpH発生電極と、
参照電極と、
pH検知電極と、
を含む電極の組と、
コントローラと、
前記電極の組の一部として前記pH発生電極間に配置された検出電極であって、前記液体の部分のpHの変化を、前記pH発生電極によって生じたときに受けるようになっており、それ以外に、前記参照電極と共に、前記液体の前記部分における化学種の存在を示す信号を生成することができる、検出電極と、
を備え、
前記電極の組は、前記流路に沿って配置され、前記pH検知電極が前記流路上の前記液体の部分のpHの変化を受けるように配置され、
前記コントローラは、前記pH検知電極と前記参照電極とを介して得られる信号に基づいて前記pH発生電極間に電圧を印加するように構成され、前記pH発生作用電極及び前記pH発生対電極において前記液体のpHを変更するようになっており、
前記コントローラは、前記検出電極と前記参照電極とを介して得られる信号を受けて、前記化学種を検出するようにさらに構成される、
センサデバイス。 - 前記pH検知電極は、前記pH発生作用電極と前記検出電極との間で前記流路に配置される、請求項9に記載のセンサデバイス。
- 前記pH検知電極は、第1の検知電極であり、
前記電極の組は、第2のpH検知電極を含み、
前記コントローラは、前記第1の検知電極及び前記第2のpH検知電極の各々と前記参照電極とを介して得られる信号に基づいて、前記pH発生電極に前記電圧を印加するように構成され、
前記検出電極は、前記第1の検知電極と第2のpH検知電極との間で前記流路に配置される、
請求項10に記載のセンサデバイス。 - 前記参照電極は、前記コントローラに接続されて、前記検出電極及び前記pH検知電極の各々に対する参照信号として働く、請求項10に記載のセンサデバイス。
- 前記検出電極並びに1つ又は複数の付加的な検出電極を含む、検出電極のアレイを備え、前記アレイの各検出電極は、前記基板上に定められた前記流路に配置されて、所与の流路上の液体中の化学種の存在を示す信号を生成することができるようになっており、前記コントローラは、前記1つ又は複数の付加的な検出電極の各々と前記参照電極とを介して得られる信号を受けて前記化学種を検出するようにさらに構成される、請求項9に記載のセンサデバイス。
- 前記1つ又は複数の付加的な検出電極の各々は、前記電極の組の一部を形成し、前記電極の組の1つ又は複数のpH発生電極間に配置される、請求項13に記載のセンサデバイス。
- 前記アレイの2つ以上の検出電極が、各々が前記基板上に定められたそれぞれの流路に沿って配置され、前記流路のうちの1つが、前記電極の組の電極がそれに沿って配置される前記流路である、請求項13に記載のセンサデバイス。
- 前記アレイの前記2つ以上の検出電極は、相異なる化学種を示す信号を生成するように構成される、請求項15に記載のセンサ。
- ウェアラブルデバイスとして構成される、請求項9に記載のセンサデバイス。
- 液体のpHを制御するための方法であって、
基板と、
前記基板上に定められ、前記液体を受け入れるように適合された流路と、
電極の組であって、
pH発生作用電極及びpH発生対電極を含む一対のpH発生電極と、
参照電極と、
pH検知電極と、
を含む電極の組と、
を備え、
前記電極の組は、前記流路に沿って配置され、前記pH検知電極が前記流路上の前記液体の部分のpHの変化を受けるように配置された、
デバイスを準備することと、
プロトン性溶媒を含む液体を前記流路に導入することと、
前記pH検知電極と前記参照電極とを介して得られる信号に基づいて、前記pH発生電極間に電圧を印加して、前記pH発生作用電極及び前記pH発生対電極における前記プロトン性溶媒のpHを変更することと、
を含む、方法。 - 前記pH検知電極は、前記一対のpH発生電極間に配置される、請求項18に記載の方法。
- 前記参照電極は、前記pH検知電極と前記pH発生対電極との間に配置される、請求項18に記載の方法。
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