Nanophotonic Switch: Gold-in-Ga2O3 Peapod Nanowires | Zendy

ChinHua Hsieh | Zendy; LiJen Chou | Zendy; GongRu Lin | Zendy; Yoshio Bando | Zendy; Dmitri Golberg | Zendy

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Nanophotonic Switch: Gold-in-Ga₂O₃ Peapod Nanowires

Author(s) -

ChinHua Hsieh,

LiJen Chou,

GongRu Lin,

Yoshio Bando,

Dmitri Golberg

Publication year - 2008

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/nl0731567

Subject(s) - materials science , nanowire , nanophotonics , annealing (glass) , optoelectronics , plasmon , transmission electron microscopy , gallium , heterojunction , nanotechnology , nanostructure , composite material , metallurgy

A novel metal-insulator heterostructure made of twinned Ga2O3 nanowires embedding discrete gold particles along the twin boundary was formed through a reaction between gold, gallium, and silica at 800 degrees C during simple thermal annealing. The Au-in-Ga2O3 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.

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