Interfacial plasmon at a singular solid-liquid interface in a partially molten aluminum alloy

被引:4
|
作者
Palanisamy, Prakash [1 ]
Sigle, Wilfried [2 ,3 ]
Howe, James M. [1 ]
机构
[1] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA
[2] Max Planck Inst Intelligent Syst, D-70569 Stuttgart, Germany
[3] Max Planck Inst Met Res, D-70569 Stuttgart, Germany
基金
美国国家科学基金会;
关键词
ENERGY-LOSS-SPECTROSCOPY; ELECTRONS; METAL; EXCITATIONS; RESOLUTION; LOSSES; IMAGES;
D O I
10.1103/PhysRevB.85.195305
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nanoplasmonics is an important emerging research area in technologies, such as energy conversion using photovoltaic devices and hydrogen sensing using Pd nanoparticles. So far, plasmon excitations are only known to exist at the interface between two different dielectric media, such as two solids or at solid-vacuum surfaces. There has been no evidence for the presence of a plasmon at a solid-liquid interface. This paper presents results on the existence and nature of the plasmon resonance between a semiconducting solid and a liquid metal, investigated in a transmission electron microscope having sub-eV and sub-angstrom resolutions. The results are compared with calculations of the plasmon based on dielectric theory and are corroborated with energy-filtered imaging analyses. The unique plasmon resonance observed at the solid-liquid interface provides new insight into the behavior of plasmons in research areas from biomedical imaging to liquid crystals, including the technologies mentioned above.
引用
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页数:7
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