Prahalad M Parthangal et al 2006 Nanotechnology 17 3786 doi:10.1088/0957-4484/17/15/029
Prahalad M Parthangal1,2, Richard E Cavicchi2 and Michael R Zachariah1,2,3
Show affiliationsWe report on a novel, in situ approach toward connecting and electrically contacting vertically aligned nanowire arrays using conductive nanoparticles. The utility of the approach is demonstrated by development of a gas sensing device employing this nano-architecture. Well-aligned, single-crystalline zinc oxide nanowires were grown through a direct thermal evaporation process at 550 °C on gold catalyst layers. Electrical contact to the top of the nanowire array was established by creating a contiguous nanoparticle film through electrostatic attachment of conductive gold nanoparticles exclusively onto the tips of nanowires. A gas sensing device was constructed using such an arrangement and the nanowire assembly was found to be sensitive to both reducing (methanol) and oxidizing (nitrous oxides) gases. This assembly approach is amenable to any nanowire array for which a top contact electrode is needed.
73.40.Cg Contact resistance, contact potential
85.35.-p Nanoelectronic devices
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Instrumentation and measurement
Issue 15 (14 August 2006)
Received 1 May 2006, accepted for publication 1 June 2006
Published 6 July 2006
Prahalad M Parthangal et al 2006 Nanotechnology 17 3786
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J Lévêque et al 2009 Supercond. Sci. Technol. 22 125021
Y.-N. Su et al 2004 ApJ 616 L39
H Q Wang et al 2007 J. Phys. D: Appl. Phys. 40 6549
Mark Hannam et al 2007 Class. Quantum Grav. 24 S15
Steve Webb and Simon Harris 2008 Phys. Med. Biol. 53
You-Quan Li et al 2003 J. Phys. A: Math. Gen. 36 2821