Full Control of Plasmonic Nanocavities Using Gold Decahedra-on-Mirror Constructs with Monodisperse Facets.
Full Control of Plasmonic Nanocavities Using Gold Decahedra-on-Mirror Constructs with Monodisperse Facets.
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使用具有单分散面的镜上金十面体结构完全控制等离子体纳米腔。
DOI：
10.1002/advs.202207178
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发表时间：
2023-04
期刊：
影响因子：
--
通讯作者：
Baumberg JJ
中科院分区：
文献类型：
--
作者：
Hu S;Elliott E;Sánchez-Iglesias A;Huang J;Guo C;Hou Y;Kamp M;Goerlitzer ESA;Bedingfield K;de Nijs B;Peng J;Demetriadou A;Liz-Marzán LM;Baumberg JJ
自下而上组装纳米粒子-镜面（NPoM）纳米腔，可实现精确的金属间间隙控制，可将光限制在亚纳米尺度，从而为开发创新的纳米光子器件提供机会。然而，对光耦合的有限理解、预测和优化以及控制纳米颗粒刻面形状的困难限制了这种构建块的使用。在这里，提出了一种基于金纳米十面体的超精密对称破缺等离子体纳米腔，以形成具有高度一致的腔模和场的镜上纳米十面体（NDoM）。通过表征超过20 000个单独的NDoM，深入探索了光输入/输出耦合的可变性，并发现了一组鲁棒的高阶等离子体回音壁模式，这些模式唯一地局限于与金属衬底接触的三角形面的边缘。在准正规模式模拟的辅助下，提出了对NDoM的系统阐述，以提供具有近百倍增强辐射效率的纳米腔。这种系统设计和精确组装的金属纳米腔将在纳米光子器件，光学机械和表面科学中获得广泛的应用。具有精确尺寸和形状的1 nm高金属光学腔是自组装的，其表现出高度一致的模式并大大改善了定向光发射，从而通过极端的光限制实现了光电子学的广泛应用。
Bottom‐up assembly of nanoparticle‐on‐mirror (NPoM) nanocavities enables precise inter‐metal gap control down to ≈ 0.4 nm for confining light to sub‐nanometer scales, thereby opening opportunities for developing innovative nanophotonic devices. However limited understanding, prediction, and optimization of light coupling and the difficulty of controlling nanoparticle facet shapes restricts the use of such building blocks. Here, an ultraprecise symmetry‐breaking plasmonic nanocavity based on gold nanodecahedra is presented, to form the nanodecahedron‐on‐mirror (NDoM) which shows highly consistent cavity modes and fields. By characterizing > 20 000 individual NDoMs, the variability of light in/output coupling is thoroughly explored and a set of robust higher‐order plasmonic whispering gallery modes uniquely localized at the edges of the triangular facet in contact with the metallic substrate is found. Assisted by quasinormal mode simulations, systematic elaboration of NDoMs is proposed to give nanocavities with near hundred‐fold enhanced radiative efficiencies. Such systematically designed and precisely‐assembled metallic nanocavities will find broad application in nanophotonic devices, optomechanics, and surface science. 1 nm high metallic optical cavities of precise size and shape are self‐assembled, which exhibit highly‐consistent modes and greatly improve directional light emission, thereby enabling widespread application in optoelectronics through extreme light confinement.
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证明 Au 的光致发光是等离子体金属的电子非弹性光散射：SERS 背景的起源。
影响因子：
10.8
作者：
Hugall JT;Baumberg JJ
通讯作者：
Baumberg JJ
DOI：
10.1021/acs.jpclett.6b00986
发表时间：
2016-06-16
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
Benz F;Chikkaraddy R;Salmon A;Ohadi H;de Nijs B;Mertens J;Carnegie C;Bowman RW;Baumberg JJ
通讯作者：
Baumberg JJ
影响因子：
35
作者：
Kena-Cohen, S.;Forrest, S. R.
通讯作者：
Forrest, S. R.
影响因子：
10.8
作者：
Cai, Yi-Yu;Sung, Eric;Link, Stephan
通讯作者：
Link, Stephan
影响因子：
56.9
作者：
Dinh, Cao-Thang;Burdyny, Thomas;Sargent, Edward H.
通讯作者：
Sargent, Edward H.