期刊
NANO LETTERS
卷 15, 期 2, 页码 1012-1017出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl5038566
关键词
Nanoparticles; noble metal; anisotropic; circular disk; nanoplate; triangular prism; plasmonics
类别
资金
- AFOSR [FA9550-11-1-0275, FA9550-12-1-0280]
- National Science Foundation's MRSEC program at the Materials Research Center of Northwestern University [DMR-1121262]
- MRSEC program (NSF) at the Materials Research Center of the National Science Foundation [DMR-1121262]
- Nanoscale Science and Engineering Center of the National Science Foundation [EEC-0118025/003]
- State of Illinois
- Northwestern University
- NSF
Herein, we report the synthesis of structurally uniform gold circular disks as two-dimensional plasmonic nanostructures that complement the well-established one-dimensional rod and three-dimensional shell structures. We show that a Au conproportionation reaction can be used to etch a collection of nonuniform triangular prisms into a uniform circular disk product with thickness and diameter varying <10%. These new particles have broadly tunable plasmon resonances (650-1000 nm) with narrow bandwidths (0.23-0.28 eV) and can be described as effectively two-dimensional plasmonic structures, as they do not support a significant transverse mode.
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