JP7220490B2 - 電解質を含むスパイクスペクトル出力型圧力センサ及びその製造方法 - Google Patents
電解質を含むスパイクスペクトル出力型圧力センサ及びその製造方法 Download PDFInfo
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- JP7220490B2 JP7220490B2 JP2021557273A JP2021557273A JP7220490B2 JP 7220490 B2 JP7220490 B2 JP 7220490B2 JP 2021557273 A JP2021557273 A JP 2021557273A JP 2021557273 A JP2021557273 A JP 2021557273A JP 7220490 B2 JP7220490 B2 JP 7220490B2
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- styrene
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- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/18—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electric potential is produced or varied upon the application of stress
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
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- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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- C—CHEMISTRY; METALLURGY
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Description
図1を参照すると、本発明は、第1電極と、前記第1電極上に位置し、電解質を含むパターンを有する圧力感知部と、前記第1電極上に位置し、前記圧力感知部の一部または全部を取り囲むスペーサと、前記スペーサと前記圧力感知部上に位置し、前記圧力感知部と離隔して位置する第2電極と、を含む圧力センサを提供する。
以下、本発明の好適な実施例を挙げて説明する。しかし、これらの実施例は例示のためのもので、これにより本発明の範囲が限定されない。
ポリジメチルシロキサン(PDMS)の主剤(SYLGARD 184 Silicone elastomer base)と硬化剤(SYLGARD 184 Silicone elastomer curing agent)を10:1(w/w)で混ぜた後、スピンコーティングして厚さ100μmのフィルムを製造した。前記フィルムを80℃で3時間硬化させた後、スチレン-イソプレン-スチレン(SIS)共重合体とクロロホルムを1:9(w/w)の比率で前記フィルム上にスピンコーティングした。残りの溶媒を除去するために、80℃で30分間熱処理してPDMS/SIS延伸性基板を製造した。前記PDMS/SIS延伸性基板を二軸方向に引いて固定させた後、金をスパッタリングした。その後、延伸性基板の固定を解除して、延伸性基板に蒸着された金の表面にバックル構造を形成することにより、延伸性基板と、前記延伸性基板上に位置する第2電極とを含む上板を製造した。
図7は製造例1によって製造された上板の光学顕微鏡画像を示すものである。
光硬化性高分子としてのポリエチレングリコールジアクリレートハイドロゲル(PEGDA hydrogel、Sigma Aldrich、Mw:575)、液体電解質としての1-ブチル3-メチルイミダゾリウムテトラフルオロホウ酸塩(1-butyl-3-methylimidazolium tetrafluoroborate、Sigma Aldrich)、光開始剤としての2-ヒドロキシ-2-メチルプロピオフェノン(2-hydroxy-2-methylpropiophenone、Sigma Aldrich)を40:58:2(w/w)で混合して混合物を製造した。
前記下板の圧力感知部と離隔して位置し、前記圧力感知部の一部または全部を取り囲むスペーサを前記下板の第1電極と、製造例1によって製造された上板の第2電極との間に形成して圧力センサを製造した。
試験例1:圧力による圧力センサの反応
図9は実施例1によって製造された圧力センサの圧力によるスパイクスペクトル信号の結果を示すものであり、図10は実施例1によって製造された圧力センサの圧力によるスパイクスペクトルのスパイクの数を整理して示すものである。
図11は実施例1によって製造された圧力センサに同じ圧力を繰り返し加えたときのスパイクスペクトル信号の結果を示すものである。
図11によれば、同じ圧力を1回加えたときと40回加えたときのスパイクスペクトルのスパイクの数は同一に現れることを確認することができる。よって、実施例1によって製造された圧力センサが反復性を持つことを確認することができる。
Claims (17)
- 第1電極と、
前記第1電極上に位置し、電解質を含むパターンを有する圧力感知部と、
前記第1電極上に位置し、前記圧力感知部の一部または全部を取り囲むスペーサと、
前記スペーサ及び前記圧力感知部上に位置し、前記圧力感知部と離隔して位置する第2電極と、を含み、
前記電解質が光硬化性高分子及び液体電解質を含む、圧力センサ。 - 前記圧力センサは、前記第2電極上に延伸性基板をさらに含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記パターンは複数のドメインを含み、前記ドメインは前記電解質を含み、前記ドメインは隣接したドメインと離隔していることを特徴とする、請求項1に記載の圧力センサ。
- 前記ドメインの形状は、線形、円形、楕円形、弓形、扇形、多角形、及びこれらの組み合わせからなる群から選ばれた1種以上を含むことを特徴とする、請求項3に記載の圧力センサ。
- 前記ドメインの形状は、隣接したドメインの形状と同じであることを特徴とする、請求項3に記載の圧力センサ。
- 前記ドメインの大きさは、隣接したドメインの大きさと同じであることを特徴とする、請求項5に記載の圧力センサ。
- 前記ドメインは、隣接したドメインと同じ間隔で離隔していることを特徴とする、請求項6に記載の圧力センサ。
- 前記光硬化性高分子は、ジアクリレート系高分子及びジメタクリレート系高分子からなる群から選ばれた1種以上を含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記液体電解質がイオン性液体を含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記電解質が光開始剤をさらに含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記第1電極または第2電極は、金、銀、銅、白金、パラジウム、ニッケル、インジウム、アルミニウム、鉄、ロジウム、ルテニウム、オスミウム、コバルト、モリブデン、亜鉛、バナジウム、タングステン、チタン、マンガン、クロム、銀ナノワイヤー、カーボンナノチューブ(CNT)、及び金ナノシートからなる群から選ばれた1種以上を含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記第2電極がバックル構造(Buckled structure)を含むことを特徴とする、請求項1に記載の圧力センサ。
- 前記バックル構造が前記第2電極の屈曲表面を含むことを特徴とする、請求項12に記載の圧力センサ。
- 前記第2電極は、面方向に対する垂直切断面が谷と山を含むジグザグ(zigzag)形状を有することを特徴とする、請求項12に記載の圧力センサ。
- 前記延伸性基板が、スチレン-ブタジエン-スチレン(SBS)ブロック共重合体、スチレン-エチレン-ブチレン-スチレン(SEBS)ブロック共重合体、スチレン-イソプレン-スチレン(SIS)ブロック共重合体、ポリウレタン(PU)、ポリイソプレンゴム(IR)、ブタジエンゴム(BR)、エチレン-プロピレン-ジエンモノマー(EPDM)ゴム、ポリジメチルシロキサン(PDMS)、シリコーンゴム、エコフレックス(ecoflex)(登録商標)、及びドラゴンスキン(dragon skin)(登録商標)からなる群から選ばれた1種以上を含むことを特徴とする、請求項2に記載の圧力センサ。
- (a)第1電極と、前記第1電極上に位置し、電解質を含むパターンを有する圧力感知部とを含む下板を製造するステップと、
(b)延伸性基板と、前記延伸性基板上に位置する第2電極とを含む上板を製造するステップと、
(c)前記圧力感知部と離隔して位置し、前記圧力感知部の一部または全部を取り囲むスペーサを前記下板の第1電極と前記上板の第2電極との間に形成するステップと、を含み、
前記ステップ(a)が、
(a-1)光硬化性高分子前駆体及び液体電解質を含む混合物を製造するステップと、
(a-2)第1電極上に前記混合物をコーティングして第1電極/コーティング層を製造するステップと、
(a-3)前記第1電極/コーティング層のコーティング層上に、パターニングする部分を除いた残りの部分を覆うマスクを積層するステップと、
(a-4)前記(a-3)の結果物にUVを照射してパターンを形成するステップと、
(a-5)前記マスクを除去して前記下板を製造するステップと、を含み、
前記光硬化性高分子前駆体が、光硬化性モノマー及び光硬化性オリゴマーからなる群から選ばれた1種以上を含む、圧力センサの製造方法。 - 前記ステップ(b)が、
(b-1)延伸性基板を二軸方向にそれぞれ引いて固定するステップと、
(b-2)前記固定された延伸性基板上に金属を蒸着して延伸性基板上に金属層を形成するステップと、
(b-3)前記固定された延伸性基板の固定を解除して、表面にバックル構造が形成された金属層を備える第2電極を含む上板を製造するステップと、を含むことを特徴とする、請求項16に記載の圧力センサの製造方法。
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