Nanophotonic Switch: Gold-in-Ga2O3 Peapod Nanowires
Resource
Nano Letters 8 (10): 3081-3085
Journal
Nano Letters
Journal Volume
8
Journal Issue
10
Pages
3081-3085
Date Issued
2008
Date
2008
Author(s)
Abstract
A novel metal-insulator heterostructure made of twinned Ga 2O3 nanowires embedding discrete gold particles along the twin boundary was formed through a reaction between gold, gallium, and silica at 800 °C during simple thermal annealing. The Au-in-Ga2O 3 peapods spontaneously crystallized under phase separation induced by the formation of twin boundaries. The nanostructures were analyzed by field emission scanning (FESEM) and transmission electron microscopes (FETEM), and their photoresponse was investigated using a double-frequency Nd:YAG laser with a wavelength of 532 nm on a designed single-nanowire device. The surface plasmon resonance (SPR) effects of embedded Au nanoparticles are proposed to be responsible for the remarkable photoresponse of these novel structures. © 2008 American Chemical Society.
Other Subjects
Electric wire; Field emission; Gallium; Metal insulator boundaries; Nanowires; Neodymium lasers; Phase separation; Silica; Surface plasmon resonance; Transmission electron microscopy; Au nanoparticles; Double frequencies; Field emission scanning; Gold particles; Heterostructure; Metal insulators; Nanowire devices; Nd : yag lasers; Novel structures; Pea pods; Photoresponse; Surface plasmons; Thermal-annealing; Transmission electron microscopes; Twin boundaries; Gold
Type
journal article
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