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首页> 外文会议>International IUPAC Conference on Polymer-solvent Complexes and Intercalates >Simple Theoretical Considerations for Block- Copolymer-Based Plasmonic Metamaterials
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Simple Theoretical Considerations for Block- Copolymer-Based Plasmonic Metamaterials

机译：基于嵌段的基于嵌段等级石质材料的简单理论考虑因素

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Block-copolymers (BCPs) self-assembling provides a unique tool for realizing large-area orderedmetamaterials with desired optical properties due to the rich range of tunable nano-morphologies and to the chemical properties of the block polymers that can lead to the selective inclusion of functionalized nanoparticles (NPs) in specific nanodomains, generating periodic arrays of NPs according to the geometry of the BCP acting as template. In this work, we investigate nanostructured thin films of polystyrene-block-poly(methylmethacrylate) (PS-PMMA) BCP filled with functionalized metallic (Au) nanoparticles. The BCP is characterized by an hexagonal array of PS cylinders in the PMMA matrix and the Au NPs are selectively included in the PS cylindrical domains. The optical properties of such nano-structures are strongly affected by localized surface plasmons (LSPs) in the NPs. We theoretically demonstrate that the optical properties of such nano-structures can be tuned by varying the NPs loading concentration and the NPs radius. Then, we investigate the effects of the hexagonal geometry on the collective plasmonic oscillations. We fabricated the PS-PMMA/Au NPs composite and we experimentally demonstrate the existence of collective plasmonic resonances of gold nanoparticles after an electromagnetic stimulation, arising from the ordered arrangement of AuNPs in the periodic array of hexagonally packed cylinders created by BCP self-assembly. This approach allows a fine modulation of the NPs optical properties and can be used as an intriguing and versatile tool to build useful devices for Optics & Photonics applications, with significant benefits for both fundamental and applied investigations.
机译：嵌段共聚物（BCP）自组装提供了一种独特的工具，用于实现具有所需光学性质的大面积订货膨胀因子，由于可调谐纳米形态的丰富范围，以及可导致选择性包容的嵌段聚合物的化学性质特定纳米型官能化纳米颗粒（NPS），根据作为模板的BCP的几何形状产生周期性的NPS。在这项工作中，我们研究了填充有官能化金属（Au）纳米颗粒的聚苯乙烯 - 嵌段 - 聚（甲基丙烯酸甲酯）（PS-PMMA）BCP的纳米结构薄膜。 BCP的特征在于PMMA矩阵中的六边形PS圆柱阵列，并且Au NPS选择性地包括在PS圆柱域中。这种纳米结构的光学性质受到NPS中的局部表面等离子体（LSP）的强烈影响。理论上我们证明可以通过改变NPS负载浓度和NPS半径来调谐这种纳米结构的光学性质。然后，我们调查六边形几何形状对集体等离子体振荡的影响。我们制造了PS-PMMA / AU NPS复合材料，我们通过通过BCP自组装产生的周期阵列的周期性阵列中的肛交阵列中的肛交阵列中的有序排列而产生的金纳米颗粒的集体等离子体共振的存在。该方法允许精细调制NPS光学性质，并可用作诱人和多功能的工具，以构建光学和光子应用的有用装置，具有对基本和应用的研究具有显着的益处。

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