期刊
ELECTROANALYSIS
卷 21, 期 1, 页码 61-67出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.200804372
关键词
Anodized alumina; Electrodeposition; Nanowires; Polypyrrole; Photonic devices; Ammonia; Gas sensor
资金
- National Institute of Environmental Health Sciences
- Defense Microelectronics Activity (DMEA) [DOD/DMEA-CNN H94003-06-20604]
- UC Graduate Research and Education in Adaptive Bio-Technology Training (GREAT) program
- [U01ES016026]
- National Research Foundation of Korea [과C6A2605] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Here we report a cost effective and versatile way of synthesizing and assembling multi-functional (e.g., gold-polypyrrole-nickel-gold) nanowires. Multisegmented nanowires were synthesized using electrodeposition method for precise control over segment dimensions for proper expression of material functionality. The nanowires were integrated on microfabricated electrodes using magnetic dipole interactions between the ferromagnetic segment in the nanowire and the ferromagnetic electrodes. The electrical properties of multisegmented nanowires showed semiconducting behavior with the activation energy of ca. 0.27 eV for the conducting polymer segment of the nanowire. These nanowire devices showed response towards light and exposure to ammonia, demonstrating their potential use as photonic device and gas sensor, respectively.
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