コレステリック液晶のフォトニックシェルによる増幅フォトンアップコンバージョン
Ji-Hwan Kang, Shin-Hyun Kim1, Alberto Fernandez-Nieves
1Department of Chemical and Biomolecular Engineering, KAIST , Daejeon 305-701, South Korea.
Journal of the American Chemical Society
|April 14, 2017
まとめ
流動的なコアとコレステリック液晶の殻を持つマイクロカプセルは,共鳴を通して光子向上変換 (TTA-UC) を強化します. この設計は,低値光子装置のスペクトルチューニングと増幅された放出を可能にします.
科学分野:
- 光学について
- 材料科学
- 化学について
背景:
- トリプレット・トリプレット・アニヒレーションベースの光子向上変換 (TTA-UC) は有望な技術である.
- 効率的なTTA-UCプラットフォームを開発するには,高度な材料設計が必要です.
- マイクロ流体技術は,マイクロスケール構造の製造に精密な制御を提供します.
研究 の 目的:
- 流動的なTTA-UCコアと光子殻を持つマイクロカプセルを作成します.
- コレステリック液晶 (CLC) を光子シェルに利用する.
- これらのマイクロカプセル内のTTA-UCのスペクトル調整と放出増幅を調査する.
主な方法:
- テンプレートとしてのトリプルエムルションの微流体製剤.
- 流動性TTA-UCコアを持つマイクロカプセルの製造
- CLCを螺旋構造に組み込み,光子殻を形成する.
- ポリメリ化可能なメソゲンを用いてCLC殻の安定化.
主要な成果:
- CLCの光子殻は,TTA-UCの放出のための共振腔として機能する.
- 上昇変換のスペクトルチューニングは,低電力刺激で達成される.
- 遅れた光の全方向増幅は,光子帯のギャップエッジで発生する.
- マイクロカプセルの設計は,TTA-UCの効率的な増強を示しています.
結論:
- マイクロフリウイド製のマイクロカプセルは,TTA-UCに対して有効です.
- 光子殻は共鳴,スペクトル調整,放出増幅を可能にします.
- このアプローチは,低値フォトニックデバイスの設計に重要な可能性を秘めています.
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