JP2009187025A - 柱状微小突起群を備えた機能性基板とその製造方法 - Google Patents
柱状微小突起群を備えた機能性基板とその製造方法 Download PDFInfo
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Abstract
【解決手段】有機ポリマー製の第1の基体と、該基体から伸びた有機ポリマー製の柱状微小突起群を有し、該柱状微小突起群の相当直径が10nmから500μm、高さが50nmから5000μmであって、該柱状微小突起群の高さ(H)に対する相当直径(D)の比(H/D)が4以上であることを特徴とする柱状微小突起群を備えた機能性基板。
【選択図】図1
Description
図1は本実施例で作製した突起物群104を備えた機能性基板100の概略斜視図である。突起物群104の材質はPMMAで、分子量は20、000から60万である。微小突起物群104と同じ有機ポリマーからなる基体102は、突起物群と連続していて突起物群を、しっかりと固定している。図1においては、突起物群104は同じ形状で、縦、横方向に整列されているが、ランダムに形成されていても良い。また、突起物群の高さ寸法、アスペクト比が、突起物が形成されている位置によって変化していても良い。このような変化は、本発明の製造法によってなし得る特徴である。
図2は他の実施例による機能性基板200の構造を示す斜視図であり、図3は微小突起物204の側面構造を示す図である。図4は図2、図3に示す機能性基板の製造工程を示すフローチャートである。
本実施例では入射光の進行方向が変わる光デバイス200を光情報処理装置に適用した一例を述べる。図5は本発明により作製した光回路500の概略構成図である。光回路500は縦(l)30ミリメートル,横(w)5ミリメートル,厚さ1ミリメートルの窒化アルミニウム製の基板501上に形成した。光回路500は、インジウムリン系の半導体レーザーとドライバ回路からなる10個の発信ユニット502,光導波路503,503’、光コネクタ504、504’から構成されている。
本実施例では実施例1で示した突起物集合体100をマイクロバイオチップ900へ適用した。図7はバイオチップ900の概略平面図である。ガラス製の基板901には深さ3μm,幅20μmの流路902が形成されており、DNA(デオキシリボ核酸),血液,蛋白質などが含まれる検体を導入孔903から導入し、流路902を流した後、排出孔904へ流す構造になっている。
図9は細胞培養シート600の平面図である。細胞培養シート600は、厚さ0.5μmのPMMAを主成分とした薄膜(シート)602,薄膜から伸びたPMMAを主成分とする相当直径2μmの柱状微小突起群604からなる。
本実施例では、表面に柱状微小突起群を形成した薄膜(シート)を撥水膜として適用した例を説明する。本実施例の撥水膜は、図11に示したように、シート606上に柱状微小突起群607が形成された構成を有する。本実施例の柱状微小突起物は、突起物間のピッチ(間隔)を20nmから10μm、高さを数μmから数十μm、突起物先端部の相当直径を50nm〜500nmとすることが好ましい。また、柱状微小突起物の材料としては特に限定はないが、PMMAなどの撥水性を有する材料とすることが好ましい。あるいは、微小突起物群の表面を撥水又は撥油剤で処理することができる。
本実施例では、シート上に形成した柱状微小突起群を無染色発色シートとして適用した例を説明する。本実施例の無染色発色シートの発色原理を図12に示す。柱状微小突起物へ入射した可視光は、柱状微小突起群において干渉を起こしながら反射し,あたかもシート表面が発色したかのように見せることができる。図12に示したように、突起物の間隔(ピッチ)P1,P2を変えることで、可視光の干渉度が変化し、見える色調を変えることが可能である。
本実施例では、柱状微小突起群を反射防止層として適用した例を説明する。本実施例の反射防止層705は、図13に示したように、厚さ0.1μm以下のPMMAを主成分とした薄膜(シート)707,薄膜707から伸びたPMMAを主成分とする相当直径1μm以下の柱状微小突起群708で構成される。この反射防止膜はディスプレイのカバーガラスや光通信用光学基板の表面に形成し、反射防止層として用いられる。なお、シート707と転写法により形成された微小突起群708は接着剤により、あるいは熱圧着法などにより一体化される。
屈折率:nAR=(nsub・nair)1/2
厚さ:tAR=λ/(4nAR)
nsub:基板の屈折率、nair:空気の屈折率、λ:設計波長
例えば、基体(ガラスを想定)の屈折率が1.5、λが1550nmの場合には、上式より反射防止層の屈折率は1.22、厚さは約320nmとなる。このように、反射防止層として必要とされるパラメータを算出し、突起部の形状、配置を調整することにより、ディスプレイのカバーガラスや光通信用光学基板などの反射防止層とすることができる。
本実施例では、柱状微小突起物表面に無電解メッキ法によりニッケル薄膜層を形成し、微量金属イオンの分析手法であるアノードストリッピング法の高感度電極として適用した例を図16を用いて説明する。
Claims (5)
- 有機ポリマーを主体とする材料の基体に、所定のパターンを構成するように配列され、相当直径10ミクロン以下の多数のピットを有し、該材料よりも高度の高い材料からなる成形型を押圧し、該材料の一部を該ピット内に圧入し、ついで該成形型を該材料から引き剥がし、該ピット内の材料が引き伸ばされた柱状微小突起群を形成する工程を含む柱状微小突起群を備えた機能性基板の製造方法。
- 請求項1において、前記柱状微小突起群の突起の高さ(H)に対する突起の相当直径(D)の比(H/D)が4以上であることを特徴とする機能性基板の製造方法。
- 請求項1において、第1基板表面に無機材料からなるスペーサーを形成し、該スペーサーを含む面上に材料膜を形成し、該材料膜に上記成形型を押圧し、該成形型を引き剥がした後、第2の基体を、該スペーサを介して前記柱状微小突起群の先端に接触・固定することを特徴とする機能性基板の製造方法。
- 請求項1に記載の方法で製造されたことを特徴とする機能性基板。
- 請求項3に記載の方法で製造されたことを特徴とする機能性基板。
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KR102112071B1 (ko) * | 2012-12-19 | 2020-05-18 | 더 리젠츠 오브 더 유니버시티 오브 캘리포니아 | 수초화를 검정하기 위한 마이크로필라 어레이 |
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JP2022537546A (ja) * | 2019-06-18 | 2022-08-26 | アプライド マテリアルズ インコーポレイテッド | 平面光学装置用のエアスペースカプセル化誘電体ナノピラー |
Also Published As
Publication number | Publication date |
---|---|
DE60333715D1 (de) | 2010-09-23 |
EP1416303B1 (en) | 2010-08-11 |
JP5064435B2 (ja) | 2012-10-31 |
EP1416303B8 (en) | 2010-10-13 |
EP1416303A3 (en) | 2004-12-22 |
EP2233564A3 (en) | 2012-11-21 |
US20050095699A1 (en) | 2005-05-05 |
EP1416303A2 (en) | 2004-05-06 |
US20040125266A1 (en) | 2004-07-01 |
US20110135814A1 (en) | 2011-06-09 |
EP2233564A2 (en) | 2010-09-29 |
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