Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9868093 | Physics Letters A | 2005 | 5 Pages |
Abstract
Nanocrystalline silver samples compacted under different pressures have been studied by X-ray diffraction and ultraviolet-visible reflectance spectroscopy. It is shown that the reflectance spectra exhibit an intense band at 315 nm, three weak bands at about 240, 380 and 490 nm, and a long tail at the long-wavelength side. Their origins are given. With increasing the compacting pressure, an opposite peak-shift effect of the surface plasmon resonance (SPR) was observed. It is concluded that the collaborating effects of particle aggregate and the unit-cell contraction both induced by the compacting pressure can explain these variations.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Yanwu Lu, Hongfei Zhang, Fangxin Liu,