期刊
NANO LETTERS
卷 12, 期 11, 页码 5946-5953出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl303377g
关键词
Localized surface plasmon; transformation optics; absorption cross section; field enhancement; structural bluntness; nonlocal effects
类别
资金
- EU project PHOME [213390]
- ESF Plasmon-Bionanosense Network
- Leverhulme Trust
- Engineering and Physical Sciences Research Council (EPSRC)
- Doctoral Training Centre in Theory and Simulation of Materials
- Lee family
- Engineering and Physical Sciences Research Council [EP/H000917/2, EP/D063329/1, EP/H000917/1] Funding Source: researchfish
- EPSRC [EP/D063329/1, EP/H000917/2, EP/H000917/1] Funding Source: UKRI
The optical properties of three-dimensional crescent shaped.. gold nanoparticles are studied using a transformation optics methodology. The polarization insensitive, highly efficient, and tunable light harvesting ability of singular nanocrescents is demonstrated We extend our approach to more realistic blunt nanostructures, showing the robustness of their plasmonic performance against geometric imperfections. Finally, we provide analytical and numerical insights into the sensitivity of the device to. radiative losses and nonlocal effects. Our theoretical findings reveal an underlying relation between structural bluntness and spatial dispersion in this particular nanoparticle configuration.
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