JP2019168276A - 分子検出素子及び分子検出装置 - Google Patents
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Abstract
Description
図1は実施形態の分子検出装置100を示すブロック図である。図1に示す分子検出装置100は、例えばガス発生元から発生した被検出分子(被検出物)1および微粒子等の交雑物4を含む検出対象ガス3から被検出分子1を検出する装置であり、捕集部10と検出器(分子検出器)20と識別器30とを備えている。検出対象ガス3は、まず分子検出装置100の捕集部10で捕集される。捕集部10は、検出対象ガス3の捕集口を有しており、ガス流路11を介して検出器20に接続されている。捕集部10は、検出対象ガス3中に含まれる微粒子等の交雑物4を除去できるフィルタを備えていてもよい。捕集部10にフィルタを備える場合は、フィルタの目は粗いもの(例えば、ガラスフィルターやガラス繊維シートであり、寸法縦100μm横100μmのもの)を使って通気性を確保できるものが使用される。
ここでは、第2の実施形態の分子検出装置について説明する。主に、第1の実施形態と異なる点を説明する。
第2の実施形態の分子検出装置の具体的な実施例およびその評価結果について説明する。
実施例2は、ナノ粒子として、ナノカーボン(ナノダイヤモンド)を使う。1gのナノダイヤモンド(東京化成工業、直径はおよそ10nm以下)が分散した10mL水溶液中に被覆する図9に示す化合物9B0.3gの溶解したメタノール溶液30mLを加える。続けてトルエン1mLを加えて激しくかき混ぜる。化合物9Bがナノダイヤモンドに付着して親油性へと変わり、ナノダイヤモンドはトルエン中に移行する。トルエン層を取り出して溶媒を除去し、ナノダイヤモンドを回収する。化合物9Bはカルボキシル基を有しており、ナノダイヤモンド表面のOHとイオン的に結合を作る。化合物9Bの代わりとして、たとえば図11に示す化合物11Eやオクタン酸を使って同様にナノ粒子を作成する。
Claims (11)
- 被検出分子が通過でき、交雑物は通過できない隙間を備える多孔層と、
前記被検出分子を検出して検出信号を出力するセンサー部と、
を具備する分子検出素子。 - 前記センサー部は、前記被検出分子を有機物プローブが捕捉することで前記検出信号を出力する請求項1に記載の分子検出素子。
- 前記多孔層は、パウダー状又はフレーク状の絶縁体を含む請求項1又は2に記載の分子検出素子。
- 前記絶縁体は、酸化グラフェンである請求項3に記載の分子検出素子。
- 前記センサー部と前記多孔層の間に設けられ、ナノ粒子を含むナノ粒子層を具備し、
前記ナノ粒子層は、前記絶縁体を支持するために設けられる請求項3又は4に記載の分子検出素子。 - 前記有機物プローブは、前記ナノ粒子に結合している請求項5に記載の分子検出素子。
- 前記ナノ粒子は、1nm以上10nm以下の直径を有する金属粒子、カーボン粒子、又は金属酸化物粒子である請求項5又は6に記載の分子検出素子。
- 前記センサー部は、グラフェン層と、前記グラフェン層に接続されたソース電極およびドレイン電極とを有する電界効果トランジスタである請求項1から7のいずれか1項に記載の分子検出素子。
- 請求項1から8のいずれか1項に記載の分子検出素子と、
前記被検出分子及び前記交雑物を捕集する捕集部と、
前記検出信号により前記被検出分子を識別する識別器と、を具備する分子検出装置。 - 複数の前記検出素子を具備し、
前記識別器は、複数の前記検出信号の強度差に基づく信号パターンにより前記被検出分子を識別する請求項9に記載の分子検出装置。 - パウダー状又はフレーク状の絶縁体を含み、被検出分子が通過でき交雑物は通過できない隙間を備える多孔層と、
前記多孔層を通過した前記被検出分子を捕捉する有機物プローブと、
前記絶縁体を支持し、前記有機物プローブが結合したナノ粒子を含むナノ粒子層と、
前記ナノ粒子層を前記多孔層と挟み、前記被検出分子を前記有機物プローブが捕捉することで検出信号を出力するセンサー部と、を具備する分子検出素子。
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WO2021200570A1 (ja) * | 2020-03-31 | 2021-10-07 | 太陽誘電株式会社 | センサデバイス、センサデバイスの製造方法およびガス判定システム |
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JP2008180529A (ja) * | 2007-01-23 | 2008-08-07 | Furukawa Electric Co Ltd:The | ガスセンサ |
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JPWO2005045409A1 (ja) * | 2003-11-07 | 2007-05-17 | 公立大学法人大阪府立大学 | 電気抵抗型検出センサおよび検出方法 |
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WO2021200570A1 (ja) * | 2020-03-31 | 2021-10-07 | 太陽誘電株式会社 | センサデバイス、センサデバイスの製造方法およびガス判定システム |
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