JP2011528113A - ナノポーラス親水性誘電体を用いた容量型湿度検出器 - Google Patents
ナノポーラス親水性誘電体を用いた容量型湿度検出器 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/01—Details
- H01G5/013—Dielectrics
- H01G5/0134—Solid dielectrics
- H01G5/0136—Solid dielectrics with movable electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
- G01N27/225—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity by using hygroscopic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/01—Details
- H01G5/013—Dielectrics
- H01G5/0134—Solid dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/16—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of distance between electrodes
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Abstract
Description
− 応答時間が非常に短いこと
− 0%と100%のRHの間の相対湿度(RH)に対する応答が線形であること
− ヒステリシスが少ないこと
− 温度係数が低いこと
− 好ましくは−20℃と80℃との間の広範な動作温度範囲を有すること
− 苛酷な媒体中を含めて、長期にわたって測定が安定すること
− 基板上に、少なくとも1つの第1の電極および少なくとも1つの第2の電極を形成するステップと、
− 少なくとも前記第1の電極と前記第2の電極との間に少なくとも1つのナノポーラス誘電材料を形成するステップであって、前記ナノポーラス誘電材料が半径2ナノメートル未満の孔を有するステップとを含む、容量型湿度センサを製造する方法にも関する。
Sは電極の表面積(S=h×ld×Ne)であり、
d0は空隙または電極の歯の間の距離であり、
ε0は真空の誘電率であり、
εrは多孔性材料の誘電率であり、
eは電極の厚さであり、
hは歯の高さであり、
ldは櫛歯の長さであり、
Ndは櫛歯の合計数であり、
Neは空隙の数である(Ne=Nd−1)。
Nmは単一層当たりの吸着された気体の量(モル)であり、
qcは凝縮熱であり、
Rは理想気体定数であり、
Tは温度であり、
Pは圧力であり、
P0は温度Tにおける飽和蒸気圧である。
102 絶縁層
104 絶縁層
105 金属層
105a 電極
105b 電極
106 櫛形電極の歯
107 櫛形電極の歯
108 ナノポーラス誘電材料
109 ナノポーラス誘電材料の層
110 金属層
205a 金属電極
205b 金属電極
208 多孔性材料の層
209 層
210 絶縁層
213 開口
215 フローティング電極
309 ブロック
315 フローティング電極
409 ブロック
415 フローティング電極
509 ブロック
Claims (12)
- 少なくとも1つの第1の電極(105a)および少なくとも1つの第2の電極(105b)と、
前記第1の電極と前記第2の電極との間の少なくとも1つのナノポーラス誘電材料(108)であって、2ナノメートル未満の半径を有する孔および親水性領域をさらに備えるナノポーラス誘電材料(108)と、
を備える容量型湿度センサ。 - 前記ナノポーラス誘電材料(108)がMSQまたはSiOCHである請求項1に記載の容量型湿度センサ。
- 前記ナノポーラス誘電材料(108)がMSQまたはSiOCHであるとき、前記ナノポーラス誘電材料(108)が、表面上に、SiO、SiOH、遊離基Si領域などの親水性領域を備える請求項2に記載の容量型湿度センサ。
- 前記ナノポーラス材料上に、前記第1の電極および前記第2の電極に対面して位置する、湿度に対して浸透性を有する少なくとも1つのフローティング電極(215)をさらに備える請求項1から3のいずれか一項に記載の容量型湿度センサ。
- 請求項1から4のいずれか一項に記載の容量型センサ(C1)と、前記容量センサとの共通電極が設けられた少なくとも1つのキャパシタ(C2)とを備え、前記キャパシタが非多孔性誘電材料を備える、湿度を測定または検出するためのデバイス。
- 前記非多孔性誘電材料がTEOSタイプの酸化シリコンである請求項5に記載のデバイス。
- 請求項1から4のいずれか一項に記載のセンサまたは請求項5もしくは6に記載のデバイスを備える、密閉されたコンポーネントにおける湿度を検出するためのデバイス。
- 基板(100)上に、少なくとも1つの第1の電極(105a)および少なくとも1つの第2の電極(105b)を形成するステップと、
少なくとも前記第1の電極と前記第2の電極との間に少なくとも1つのナノポーラス誘電材料(108)を形成するステップであって、前記ナノポーラス誘電材料(108、208)が半径2ナノメートル未満の孔を備えるステップと、
前記誘電材料に親水性処理を施すステップと、
を含む容量型湿度センサを製造する方法。 - 前記ナノポーラス誘電材料(108)がMSQまたはSiOCHである請求項8に記載の方法。
- 前記ナノポーラス誘電材料を形成するステップの後に、前記誘電材料に酸化プラズマによる親水性処理を施すステップをさらに含む請求項8または9に記載の方法。
- 前記プラズマがN2Oプラズマである請求項10に記載の方法。
- 前記ナノポーラス材料(108)上に、前記第1の電極および前記第2の電極に対面して位置する、湿度に対して浸透性を有する少なくとも1つのフローティング電極(215)を製造するステップをさらに含む請求項8から11のいずれか一項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0854826 | 2008-07-16 | ||
FR0854826A FR2934051B1 (fr) | 2008-07-16 | 2008-07-16 | Detecteur d'humidite capacitif a dielectrique hydrophile nanoporeux |
PCT/EP2009/057708 WO2010006877A1 (fr) | 2008-07-16 | 2009-06-22 | Detecteur d'humidite capacitif a dielectrique hydrophile nanoporeux |
Publications (2)
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JP2011528113A true JP2011528113A (ja) | 2011-11-10 |
JP5744729B2 JP5744729B2 (ja) | 2015-07-08 |
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JP2011517839A Expired - Fee Related JP5744729B2 (ja) | 2008-07-16 | 2009-06-22 | ナノポーラス親水性誘電体を用いた容量型湿度検出器 |
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Country | Link |
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US (1) | US8739622B2 (ja) |
EP (1) | EP2304416B1 (ja) |
JP (1) | JP5744729B2 (ja) |
FR (1) | FR2934051B1 (ja) |
WO (1) | WO2010006877A1 (ja) |
Cited By (2)
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JP2016038382A (ja) * | 2014-08-05 | 2016-03-22 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | マイクロメカニカルガスセンサ装置およびその製造方法 |
JP2018128428A (ja) * | 2017-02-10 | 2018-08-16 | 新日本無線株式会社 | 静電容量型湿度センサ |
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US9360509B2 (en) | 2006-11-17 | 2016-06-07 | Trustees Of Boston College | Nanoscale sensors with nanoporous material |
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US8739622B2 (en) | 2014-06-03 |
JP5744729B2 (ja) | 2015-07-08 |
US20110179861A1 (en) | 2011-07-28 |
FR2934051A1 (fr) | 2010-01-22 |
EP2304416A1 (fr) | 2011-04-06 |
FR2934051B1 (fr) | 2011-12-09 |
WO2010006877A9 (fr) | 2010-04-29 |
WO2010006877A1 (fr) | 2010-01-21 |
EP2304416B1 (fr) | 2019-09-11 |
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