Abstract
A tunable structural engineering of nanowires based on template-assisted alloying and phase segregation processes is demonstrated. The Au-Ge system, which has a low eutectic temperature and negligible solid solubility (< 10-3 atom %) of Au in Ge at low temperatures, is utilized. Depending on the Au concentration of the initial nanowires. final structures ranging from nearly periodic nanodlsk patterns to core/shell and fully alloyed nanowires are produced. The formation mechanisms are discussed in detail and characterized by in situ transmission electron microscopy and energy-dispersive spectrometry analyses. Electrical measurements illustrate the metallic and semiconducting characteristics of the fully alloyed and alternating Au/Ge nanodisk structures, respectively.
Original language | English |
---|---|
Pages (from-to) | 393-397 |
Number of pages | 5 |
Journal | Nano Letters |
Volume | 10 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 10 2010 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Bioengineering
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering