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Magnetically Assembled Multisegmented Nanowires and Their Applications
Author(s) -
Bangar Mangesh A.,
Hangarter Carlos M.,
Yoo Bongyoung,
Rheem Youngwoo,
Chen Wilfred,
Mulchandani Ashok,
Myung Nosang V.
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200804372
Subject(s) - nanowire , materials science , electrode , nanotechnology , ferromagnetism , optoelectronics , chemistry , physics , quantum mechanics
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.