期刊
NANO LETTERS
卷 12, 期 10, 页码 5418-5421出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl302919n
关键词
Localized surface plasmon resonance; silver nanoparticle; photoelectrochemistry; titanium dioxide; nanoparticle manipulation
类别
资金
- JSPS
- [2107]
- Grants-in-Aid for Scientific Research [24108708] Funding Source: KAKEN
Optical control of size, shape, or orientation of a metal nanoparticle is important for development of nanoscale optical devices and elements of photonic circuits. Thus far, however, independent control of two or more parameters has not yet been achieved. Here we place a simple spherical Ag nanoparticle on TiO2 with high refractive index and separate a plasmon mode localized at the Ag-TiO2 interface from the other mode distributed over the nanoparticle. Selective excitation of each mode gives rise to a corresponding morphological change and selective suppression of the plasmon mode, resulting in multicolor changes of scattering light from orange to red, green, or a dark color.
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