Synthesis and surface plasmon resonance of Au-ZnO Janus nanostructures
Abstract
Metal-semiconductor Janus nanostructures with asymmetry and directionality have recently aroused significant interest, both in fundamental light-matter interactions mechanism and in technological applications. Here we report the synthesis of different Au-ZnO Janus nanostructures via a facile one-pot colloid method. The growth mechanism is revealed by a series of designed synthesis experiments. The light absorption properties are determined by both the decrease of dipole oscillations of the free electrons and the plasmon-induced hot-electron transfer. Moreover, the finite-difference time-domain (FDTD) simulation method is used to elucidate the electric field distributions of these Janus nanostructures.
- Publication:
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Chinese Physics B
- Pub Date:
- August 2019
- DOI:
- 10.1088/1674-1056/28/8/083301
- Bibcode:
- 2019ChPhB..28h3301Z
- Keywords:
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- Au-ZnO;
- SERS;
- finite-difference time-domain;
- mechanism