JP7018460B2 - シークエンシング用デバイス - Google Patents
シークエンシング用デバイス Download PDFInfo
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- JP7018460B2 JP7018460B2 JP2019568752A JP2019568752A JP7018460B2 JP 7018460 B2 JP7018460 B2 JP 7018460B2 JP 2019568752 A JP2019568752 A JP 2019568752A JP 2019568752 A JP2019568752 A JP 2019568752A JP 7018460 B2 JP7018460 B2 JP 7018460B2
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Description
本出願は、2018年2月16日に出願された米国仮出願第62/710,350号の利益を主張し、その内容は、その全体が参照により本明細書に組み込まれる。
その他の注意事項
Claims (22)
- デバイスであって、
シス電極に関連付けられたシスウェルと、
トランス電極に関連付けられたトランスウェルと、
前記シスウェルと前記トランスウェルとの間に配置された電界効果トランジスタ(FET)と、を備え、
前記電界効果トランジスタ(FET)は、その中に画定された流体システムを備え、 前記流体システムは、
前記シスウェルに面した第1の空洞であって、前記第1の空洞は、入口端および前記入口端と反対側の出口端を有する、第1の空洞と、
前記トランスウェルに流体接続された第2の空洞と、
前記第1の空洞の出口端から前記電界効果トランジスタを通ってベース基板層まで延びる貫通ビアであって、前記ベース基板層は、前記貫通ビアと前記第2の空洞との間に配置されている、貫通ビアと、を備え、
前記デバイスは、
前記シスウェルと前記第1の空洞とを流体接続する第1のナノスケール開口部であって、前記第1のナノスケール開口部は、内径を有する、第1のナノスケール開口部と、
前記ベース基板層の厚さを通して画定される第2のナノスケール開口部であって、前記第2のナノスケール開口部は、前記貫通ビアと前記第2の空洞とを流体接続し、前記第2のナノスケール開口部は、内径を有する、第2のナノスケール開口部と、を備え、
前記第2のナノスケール開口部内径は、前記第1のナノスケール開口部内径よりも大きい、デバイス。 - 前記第2のナノスケール開口部内径は、前記第1のナノスケール開口部内径よりも少なくとも約2倍大きく、
前記第1のナノスケール開口部内径は、約1nm~約3nmの範囲であり、かつ、
前記第2のナノスケール開口部内径は、約2nm~約20nmの範囲である、請求項1に記載のデバイス。 - 前記第2のナノスケール開口部内径は、前記第1のナノスケール開口部内径の約2倍から前記第1のナノスケール開口部内径の約5倍大きい範囲である、請求項1に記載のデバイス。
- 前記第1のナノスケール開口部内径は、約0.5nm~約3nmの範囲であり、かつ、
前記第2のナノスケール開口部内径は、約10nm~約20nmの範囲である、請求項1に記載のデバイス。 - 前記デバイスは、前記シスウェルと前記第1の空洞との間に配置された膜をさらに備え、前記第1のナノスケール開口部は、前記膜を通って延びる、請求項1ないし4のうちいずれか1項に記載のデバイス。
- 前記膜は、脂質および脂質の生体模倣同等物からなる群から選択される、請求項5に記載のデバイス。
- 前記第1のナノスケール開口部は、膜に配置された、ポリヌクレオチドナノポア、ポリペプチドナノポア、またはカーボンナノチューブを通って延びる、請求項6に記載のデバイス。
- 前記膜は、合成膜であり、前記第1のナノスケール開口部は、固体ナノポアである、請求項5に記載のデバイス。
- 前記第1のナノスケール開口部は、可変の電気抵抗を有し、前記第2のナノスケール開口部は、少なくとも実質的に固定された電気抵抗を有する、請求項1ないし8のうちいずれか1項に記載のデバイス。
- 前記デバイスは、ナノポアシーケンサを備える、請求項1ないし9のうちいずれか1項に記載のデバイス。
- 請求項10に記載の複数のデバイスであって、
前記複数のデバイスは、アレイに配置された複数のナノポアシーケンサを含み、
前記複数のナノポアシーケンサのそれぞれは、共通のシス電極および共通のトランス電極を共有するか、または、
前記複数のナノポアシーケンサのそれぞれは、別個のシス電極および別個のトランス電極を有するか、または、
前記複数のナノポアシーケンサのそれぞれは、共通のシス電極を共有し、別個のトランス電極を有するか、または、
前記複数のナノポアシーケンサのそれぞれは、別個のシス電極を有し、共通のトランス電極を共有する、複数のデバイス。 - 請求項1ないし11のうちいずれか1項に記載のデバイスまたは複数のデバイスを使用する方法であって、前記方法は、
シスウェル、トランスウェル、第1の空洞、FET貫通ビア、および第2の空洞のそれぞれに電解質を導入するステップと、
電圧バイアスを、第1のナノスケール開口部を通してポリヌクレオチドを駆動するのに十分にシス電極とトランス電極との間に印加するステップであって、前記第1のナノスケール開口部の電気抵抗は、前記ポリヌクレオチドの塩基の同一性に応じて変化し、前記FET貫通ビア内の電解質の電位は、前記第1のナノスケール開口部の電気抵抗の変動に応じて変化する、ステップと、
前記ポリヌクレオチドが前記第1のナノスケール開口部を通って駆動されるときのFETの応答を測定して、ポリヌクレオチドの塩基を識別するステップと、を含む方法。 - 前記FETは、ソース、ドレイン、およびチャネルをさらに備え、前記FETの応答を測定するステップは、
ソース-ドレイン電流を測定するステップ、または、
ソース、ドレイン、またはソースとドレインの両方の電位を測定するステップ、または、
チャネルの抵抗を測定するステップ、または、
その組み合わせと、を含む、請求項12に記載の方法。 - デバイスの製造方法であって、前記方法は、
電界効果トランジスタを製造するステップと、
その中に流体システムを画定するステップと、を含み、
前記流体システムは、
入口端と前記入口端の反対側の出口端を有する第1の空洞と、
前記第1の空洞に対向する第2の空洞と、を含み、
前記方法は、
前記第1の空洞の出口端から前記第2の空洞に向かってベース基板までの前記電界効果トランジスタを通る貫通ビアを画定するステップであって、前記ベース基板は、前記貫通ビアと前記第2の空洞との間に配置される、ステップと、
前記第1の空洞の入口端を覆う膜を画定するステップであって、前記膜は、それを通る第1のナノスケール開口部を有し、前記第1のナノスケール開口部は、内径を有する、ステップと、
前記貫通ビアを前記第2の空洞に流体接続させるために、前記電界効果トランジスタの前記ベース基板の厚さを通る第2のナノスケール開口部を画定するステップであって、前記第2のナノスケール開口部は、内径を有し、前記第2のナノスケール開口部内径は、前記第1のナノスケール開口部内径より大きい、ステップと、を含む方法。 - 前記方法は、
シスウェルを前記第1のナノスケール開口部に流体接続するステップであって、前記シスウェルは、シス電極に関連付けられる、ステップと、
トランスウェルを前記第2の空洞に流体接続するステップであって、前記トランスウェルは、トランス電極に関連付けられ、それにより、ナノポアシーケンサを形成する、ステップと、
前記ナノポアシーケンサを電解質に浸漬するステップと、をさらに含む、請求項14に記載の方法。 - 前記電界効果トランジスタを製造するステップは、
シリコンオンインシュレータ基板の2つのシリコン層のうちの1つに、ソース、ドレイン、およびチャネルを画定するステップであって、前記シリコンオンインシュレータ基板は、前記2つのシリコン層の間に絶縁体層を含む層状構造である、ステップと、
前記2つのシリコン層のうちの1つの表面を酸化して、ソース、ドレイン、およびチャネル上にゲート酸化物を形成するステップと、
前記チャネル上の前記ゲート酸化物上に犠牲層を形成するステップと、
エッチング停止材料を堆積して、前記ソース上および前記ドレイン上の前記ゲート酸化物上、および前記犠牲層上に層を形成し、ベース基板を形成するステップと、
垂直相互接続アクセス(ビア)および絶縁材料に部分的にカプセル化された金属相互接続を製造するステップであって、前記ビアは、前記ソースおよびドレインを前記金属相互接続に電気的に接続する、ステップと、を含む、請求項14に記載の方法。 - 前記エッチング停止材料を堆積するステップの前に、前記方法は、前記シリコンオンインシュレータ基板の前記絶縁体層まで前記2つのシリコン層のうちの他方の一部をエッチングすることにより、前記流体システムの前記第2の空洞を画定するステップをさらに含み、前記エッチング除去された部分は、前記チャネルに対向している、請求項16に記載の方法。
- 前記エッチング停止材料は、前記2つのシリコン層のうちの他方および前記絶縁体層の露出部分上に堆積されて前記ベース基板を形成する固体材料である、請求項17に記載の方法。
- 前記第2のナノスケール開口部は、前記固体材料の一部を通してエッチングすることにより画定される、請求項18に記載の方法。
- 前記第1の空洞を画定するステップは、
前記絶縁材料の領域を前記犠牲層までエッチングするステップであって、前記領域は、前記チャネルに接する、ステップと、
前記犠牲層をエッチングして、前記チャネル上の前記ゲート酸化物を露出させるステップと、を含み、
前記貫通ビアを画定するステップは、
前記ゲート酸化物、前記シリコンオンインシュレータ基板の前記2つのシリコン層のうちの1つ、および前記シリコンオンインシュレータ基板の前記絶縁体層のそれぞれの一部をエッチングして、前記固体材料を露出させるステップを含む、請求項18または19に記載の方法。 - 前記方法は、
前記貫通ビア内の前記シリコンオンインシュレータ基板の前記2つのシリコン層のうちの1つの露出部分を酸化するステップをさらに含む、請求項20に記載の方法。 - 前記方法は、
前記貫通ビア内の前記シリコンオンインシュレータ基板の前記2つのシリコン層のうちの1つの露出部分上に絶縁層を堆積または成長させるステップをさらに含む、請求項20に記載の方法。
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