JP5800897B2 - 可変静電容量センサ及びその作製方法 - Google Patents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
-
- 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
- G01N27/226—Construction of measuring vessels; Electrodes therefor
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- 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
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- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
a)セラミックコンデンサを提供する工程であって、セラミックコンデンサが、
電気的に相互接続された第1の導電性シートを含む第1の導電性電極と、
電気的に相互接続された第2の導電性シートを含む第2の導電性電極と、ここで第1の導電性シートが、少なくとも部分的に第2の導電性シートに挟まれ、第2の導電性電極が、第1の導電性電極と電気的に絶縁され、
少なくとも部分的に、第1の導電性シートと第2の導電性シートとの間に配置され、かつ第1の導電性シート及び第2の導電性シートと接触するセラミック材料と、を備える、工程と、
b)セラミック材料の少なくとも一部分を微多孔性誘電体材料で置き換える工程であって、微多孔性誘電体材料が、少なくとも部分的に、第1の導電性シートと第2の導電性シートとの間に配置され、かつ第1の導電性シート及び第2の導電性シートと接触する、工程と、を含む。
電気的に相互接続された第1の導電性シートを含む第1の導電性電極と、
電気的に相互接続された第2の導電性シートを含む第2の導電性電極と、ここで第1の導電性シートが、少なくとも部分的に第2の導電性シートに挟まれ、第2の導電性電極が、第1の導電性電極と電気的に絶縁され、
少なくとも部分的に、第1の導電性シートと第2の導電性シートとの間に配置され、かつ第1の導電性シート及び第2の導電性シートと接触する微多孔性誘電体材料と、を備える。
用語「微多孔性」は、材料が有意な規模の、内部の相互接続された間隙体積を有し、平均孔径(例えば、吸着等温線手段によって特徴付けられる)は、約100nm未満であることを意味する。
用語「導電性」は、電気的に伝導性であることを意味する。
モノマー、5,5’,6,6’−テトラヒドロキシ−3,3,3’,3’−テトラメチル−1,1’−スピロビスインダン及びテトラフルオロテレフタロニトリルから、BuddらによりAdvanced Material,2004,Vol.16,No.5,pp.456〜459に報告されている手順に概ね従ってPIM材料(PIM1)を調製した。100.00グラムの5,5’,6,6’−テトラヒドロキシ−3,3,3’,3’−テトラメチル−1,1’−スピロビスインダンを、59.219gのテトラフルオロテレフタロニトリル、243.6gの炭酸カリウム、及び2543.6gのN,N−ジメチルホルムアミドと組み合わせ、混合物を68℃で72時間反応させた。重合混合物を水中に注ぎ、沈殿を真空濾過により単離した。得られたポリマーをテトラヒドロフランに2回溶解し、エタノールから沈殿させ、室温で風乾した。光散乱検出を用いるゲル透過クロマトグラフィー分析によって決定して、およそ40,800の数平均分子量を有する黄色固体生成物が得られた。
a)市販用の22−nF(22−ナノファラッド)セラミックコンデンサ(Kemet Electronics Corporation,Greenville,South Carolinaからの部材番号C340C223J2G5CA)を、低速ダイヤモンド鋸を使用して、リード線に実質的に直交する方向にてリード線付近で2つに切った(静電容量0.488nFを得た)。コンデンサは、35マイクロメートルのピッチを有し、かつセラミック層により分離される24の互いにかみ合う金属フィンガを有した。リード線が取り付けられた部分を、以下の手順にて使用した。上記で調製した比較的な静電容量センサが使用可能であることを示すための対照工程として、センサを150℃で1時間焼いた後、試験チャンバ内に配置し、数個のレベルの相対湿度に暴露した。センサは、湿度に対する高い応答を示し、80パーセント相対湿度において0.25のΔC/C0(即ち、静電容量の、初期値からの変化を初期値で除算)値を達成した。別個の実験において、センサは、試験チャンバ内に導入されたアセトン蒸気に暴露された際、実質的に非応答であった(即ち、ΔC/C0は、本質的にゼロであった)。次に、センサを150℃で1時間焼き、試験チャンバ内に配置した。少なくとも4000ppmまでの濃度を有するアセトン蒸気に暴露した所、静電容量の変化は見られなかった((即ち、ΔC/C0は、本質的にゼロであった)。
Claims (2)
- 可変静電容量センサであって、
電気的に相互接続された複数の第1の導電性シートを含む第1の導電性電極と、
電気的に相互接続された複数の第2の導電性シートを含む第2の導電性電極と、ここで前記第1の導電性シートが、少なくとも部分的に前記第2の導電性シートと交互配置され、前記第2の導電性電極が、前記第1の導電性電極と電気的に絶縁され、
少なくとも部分的に、前記第1の導電性シートと前記第2の導電性シートとの間に配置され、かつ前記第1の導電性シート及び前記第2の導電性シートと接触するセラミック材料と、
少なくとも部分的に、前記第1の導電性シートと前記第2の導電性シートとの間に配置され、かつ前記第1の導電性シート及び前記第2の導電性シートと接触する微多孔性誘電体材料と、を備える、可変静電容量センサ。 - 可変静電容量センサの製造方法であって、
a)セラミックコンデンサを提供する工程であって、前記セラミックコンデンサが、
電気的に相互接続された複数の第1の導電性シートを含む第1の導電性電極と、
電気的に相互接続された複数の第2の導電性シートを含む第2の導電性電極と、ここで前記第1の導電性シートが、少なくとも部分的に前記第2の導電性シートと交互配置され、前記第2の導電性電極が、前記第1の導電性電極と電気的に絶縁され、
少なくとも部分的に、前記第1の導電性シートと前記第2の導電性シートとの間に配置され、かつ前記第1の導電性シート及び前記第2の導電性シートと接触するセラミック材料と、を備える、工程と、
b)前記セラミック材料の少なくとも一部分を微多孔性誘電体材料と置き換える工程であって、前記微多孔性誘電体材料が、少なくとも部分的に、前記第1の導電性シートと前記第2の導電性シートとの間に配置され、かつ前記第1の導電性シート及び前記第2の導電性シートと接触する、工程と、を含む、方法。
Applications Claiming Priority (3)
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US35484310P | 2010-06-15 | 2010-06-15 | |
US61/354,843 | 2010-06-15 | ||
PCT/US2011/038844 WO2011159480A1 (en) | 2010-06-15 | 2011-06-02 | Variable capacitance sensors and methods of making the same |
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JP2013528817A JP2013528817A (ja) | 2013-07-11 |
JP2013528817A5 JP2013528817A5 (ja) | 2014-07-17 |
JP5800897B2 true JP5800897B2 (ja) | 2015-10-28 |
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US (1) | US9018060B2 (ja) |
EP (1) | EP2583090B1 (ja) |
JP (1) | JP5800897B2 (ja) |
CN (1) | CN103069269B (ja) |
WO (1) | WO2011159480A1 (ja) |
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US10228344B2 (en) | 2010-09-30 | 2019-03-12 | 3M Innovative Properties Company | Sensor element, method of making the same, and sensor device including the same |
EP2622334B1 (en) | 2010-09-30 | 2016-05-25 | 3M Innovative Properties Company | Sensor element, method of making the same, and sensor device including the same |
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- 2011-06-02 CN CN201180039444.0A patent/CN103069269B/zh not_active Expired - Fee Related
- 2011-06-02 EP EP11724916.9A patent/EP2583090B1/en not_active Not-in-force
- 2011-06-02 WO PCT/US2011/038844 patent/WO2011159480A1/en active Application Filing
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CN103069269A (zh) | 2013-04-24 |
EP2583090A1 (en) | 2013-04-24 |
WO2011159480A1 (en) | 2011-12-22 |
US9018060B2 (en) | 2015-04-28 |
CN103069269B (zh) | 2016-08-03 |
EP2583090B1 (en) | 2016-04-06 |
US20130088244A1 (en) | 2013-04-11 |
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