JP5863804B2 - 音響メタマテリアルを作製する装置及び方法 - Google Patents
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Description
Claims (19)
- 音響メタマテリアルを製造する方法であって、
列及び行に配列され、かつ互いから相互接続ノード群で分離されたバネ群の平面パターンを形成する工程と、
前記相互接続ノード群の間の距離に対応する距離だけ互いから分離された質量体ユニット群の平面パターンを形成する工程と、
前記相互接続ノード群の間の前記距離だけ互いから分離された垂直方向バネ群の配列を形成する工程と、
前記バネ群の平面パターン、前記質量体ユニット群の平面パターン、及び前記垂直方向バネ群の配列を位置合わせし、結合させてユニットセル群から成る層を形成する工程と
を含む方法。 - 更に、ユニットセル群から成る複数層を位置合わせする工程、及び前記ユニットセル群から成る複数層を結合させて、所望の厚さの音響メタマテリアルを形成する工程を含む、請求項1に記載の方法。
- 前記複数層を結合させる工程は、異なる層のバネ特性又は質量特性が異なる特性を有している複数層を結合させる工程を含む、請求項2に記載の方法。
- 更に、前記ユニットセル群から成る複数層に、前記複数層により形成される格子構造に浸透する媒質を充填する工程を含む、請求項2に記載の方法。
- 前記バネ群の平面パターンを形成する工程は、前記相互接続ノード群の各々に対応するように配置された貫通ビア群を有する基板上に複数のバネを形成する工程を含む、請求項1に記載の方法。
- 前記バネ群の平面パターンを形成する工程は、列方向に延びるバネ群が、行方向に沿って延びるバネ群とは異なるバネ特性を有するように、前記複数のバネを形成する工程を含む、請求項5に記載の方法。
- 前記バネ群の平面パターンを形成する工程は、列方向に延びるバネ群が、行方向に沿って延びるバネ群と同じバネ特性を有するように、前記複数のバネを形成する工程を含む、請求項5に記載の方法。
- 前記質量体ユニット群の平面パターンを形成する工程は、複数の質量体ユニットを基板上に形成する工程と、前記基板の一部を除去して、前記基板の残りの部分を、前記相互接続ノード群の間の距離に対応する位置に残す工程とを含む、請求項1に記載の方法。
- 前記質量体ユニット群の平面パターンを形成する工程は、複数の質量体ユニットを基板上に形成する工程と、前記質量体ユニット群の平面パターンを前記バネ群の平面パターンと組み合わせた後に除去されるキャリア材料で前記質量体ユニット群を被覆する工程とを含む、請求項1に記載の方法。
- 前記質量体ユニット群の平面パターンを形成する工程は、前記バネ群の平面パターンのバネ群が形成される基板の、前記相互接続ノード群に対応する位置に配置される貫通ビア群の直径よりも大きい直径を有するように、前記質量体ユニット群を形成する工程を含む、請求項1に記載の方法。
- 前記質量体ユニット群の平面パターンを形成する工程は、前記質量体ユニット群を異なるサイズに形成して質量勾配を付ける工程を含む、請求項1に記載の方法。
- 前記垂直方向バネ群の配列を形成する工程は、
格子定数に対応する幅を有する材料の上に複数のバネ列を形成する工程であって、各バネ列内の複数のバネが、前記相互接続ノード群の間の前記距離だけ互いから離間する工程と、
前記バネ列を互いから切り離して個片化する工程と、
前記バネ列を互いに隣接するように配置して、これらのバネ列を、前記格子定数に対応する前記幅を画定する前記材料によって互いから分離する工程とを含む、請求項1に記載の方法。 - 前記バネ群の平面パターンを形成する工程、前記質量体ユニット群の平面パターンを形成する工程、及び前記垂直方向バネ群の配列を形成する工程は、リソグラフィを利用して、前記バネ群の平面パターン、前記質量体ユニット群の平面パターン、及び前記垂直方向バネ群の配列を形成する工程を含む、請求項1に記載の方法。
- 前記バネ群の平面パターン及び前記質量体ユニット群の平面パターンを位置合わせし、結合させる工程は、前記質量体ユニット群が形成される基板の部分を、前記バネ群の平面パターンが形成される基板内の、前記相互接続ノード群に対応する位置に配置される対応する貫通ビア群に位置合わせする工程を含み、前記部分の直径が前記貫通ビアの直径よりも小さいことにより、前記貫通ビアへの前記部分の挿入が可能になる、請求項1に記載の方法。
- 立方格子状に配列された質量体ユニット群と、
第1平面にある第1のバネ配列であって、前記第1のバネ配列内の各質量体ユニットを、前記第1平面にある1つの隣接する質量体ユニットに、1つのバネで連結するように配置されており、各バネが、特定の質量体ユニットに接続されて、前記特定の質量体ユニットに接続される隣接するバネの延在方向と略直交する方向に延びる、前記第1のバネ配列と、
前記第1平面と平行な第2平面にある少なくとも1つの第2のバネ配列であって、前記第2のバネ配列内の各質量体ユニットを前記第2平面にある1つの隣接する質量体ユニットに接続する、前記少なくとも1つの第2のバネ配列と、
前記第1及び第2平面と略直交して配置され、かつ前記第1平面にある質量体ユニット群を、前記第2平面にあるそれぞれの隣接する質量体ユニット群に接続するように配列される複数のバネとを備えている、音響メタマテリアル。 - 前記質量体ユニットの各々は同じ質量を有し、バネの各々は同じバネ特性を有する、請求項15に記載の音響メタマテリアル。
- 前記第1のバネ配列内の質量体ユニット群又はバネ群は、前記第2のバネ配列内の質量体ユニット群又はバネ群とは異なる質量値又はバネ特性を有する、請求項15に記載の音響メタマテリアル。
- 前記第1のバネ配列内の質量体ユニット群又はバネ群は、前記第1のバネ配列内の他の質量体ユニット群又はバネ群とは異なる質量値又はバネ特性を有する、請求項15に記載の音響メタマテリアル。
- 前記第1のバネ配列及び前記第2のバネ配列は、互いに別個に形成される、請求項15に記載の音響メタマテリアル。
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US12/879,457 | 2010-09-10 | ||
US12/879,457 US8172036B2 (en) | 2010-09-10 | 2010-09-10 | Apparatus and method for providing acoustic metamaterial |
PCT/US2011/047309 WO2012033599A1 (en) | 2010-09-10 | 2011-08-10 | Apparatus and method for providing acoustic metamaterial |
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