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Bioplasmonic Alloyed Nanoislands Using Dewetting of Bilayer Thin Films

机译:双层合金的纳米米底米底底底薄膜

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摘要

Unlike monometallic materials, bimetallic plasmonic materials offer extensive benefits such as broadband tuning capability or high environmental stability. Here we report a broad range tuning of plasmon resonance of alloyed nanoislands by using solid-state dewetting of gold and silver bilayer thin films. Thermal dewetting after successive thermal evaporation of thin metal double-layer films readily forms AuAg-alloyed nanoislands with a precise composition ratio. The complete miscibility of alloyed nanoislands results in programmable tuning of plasmon resonance wavelength in a broadband visible range. Such extraordinary tuning capability opens up a new direction for plasmonic enhancement in biophotonic applications such as surface enhanced Raman scattering or plasmon-enhanced fluorescence.
机译:与单金属材料不同,双金属等质子材料提供广泛的益处,如宽带调谐能力或高环境稳定性。 在这里,我们通过使用固态脱模的金和银双层薄膜通过固态脱模来报告合金纳米岛的等离子体共振的广泛调整。 薄金属双层膜连续热蒸发后热脱模容易形成具有精确成分比的uAg合金纳米岛。 合金纳米米雪兰的完全混溶导致宽带可见范围中的等离子体共振波长的可编程调谐。 这种非凡的调谐能力在诸如表面增强的拉曼散射或等离子体增强的荧光等生物照相应用中的等离子体增强的新方向。

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