Synthesis and optical properties of silicon-gold core-shell nanowires
Abstract
In this study, silicon nanowires (SiNWs) were used as the templates to synthesize Si-Au core-shell nanowires through multi-steps wet chemistry method. The use of SiNWs permitted precise control of core diameter and wire length and the wet chemistry method allowed control of shell thickness. Far-field optical scanning microscopy study showed that the Si-Au core-shell nanowires emit two photon luminescence (TPL) signals under near infrared (NIR) excitation. Furthermore, the TPL along the Si-Au core-shell nanowires demonstrated interference pattern which might be due to the plasma field enhancement. The TPL pattern along the Si-Au core-shell nanowires might be used as a read-out of plasma wave and provide a new insight of one dimension metallic nanostructure.
Degree
M.S.B.M.E.
Advisors
Cheng, Purdue University.
Subject Area
Biomedical engineering
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