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Laser-assisted hydrothermal growth of size-controlled ZnO nanorods for sensing applications

Henley, SJ, Fryar, J, Jayawardena, KDGI and Silva, SRP (2010) Laser-assisted hydrothermal growth of size-controlled ZnO nanorods for sensing applications NANOTECHNOLOGY, 21 (36). - - -. ISSN 0957-4484

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Abstract

Pulsed laser irradiation is used to seed the low-temperature hydrothermal growth of ZnO nanorods. UV laser irradiation produces ZnO nanoparticles in solution that act as nucleation seeds for the subsequent hydrothermal growth of the nanorods. By systematically varying the seed density and/or the concentration of the reactants, the diameter of the nanorods can be controlled over a wide range with a narrow size distribution. The nanorods are linked into multi-pod structures, due to nucleation at a central seed, but ultrasonic processing of the solutions is shown to yield isolated nanorods. Three-dimensional networks of these multi-pod structures are fabricated by drop-casting the solutions onto inter-digitated electrodes. These devices are used to detect ethanol, water vapour and UV light exposure.

Item Type: Article
Uncontrolled Keywords: CHEMICAL-VAPOR-DEPOSITION, NANOWIRES, PHOTOLUMINESCENCE, TEMPERATURE, ARRAY
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Symplectic Elements
Date Deposited: 06 Oct 2011 08:43
Last Modified: 23 Sep 2013 18:46
URI: http://epubs.surrey.ac.uk/id/eprint/7298

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