Abstract:The design and fabrication of novel nanorod-based nanostructures consisting of well-known sensing materials such as ZnO, SnO2 with new morphology and anisotropy are presented. Ordered arrays consisting of metal oxide building-blocks of controlled morphologies, sizes, and aspect ratios are generated directly onto various substrates from the hydrolysis-condensation and heteronucleation of aqueous metal salts solutions at mild temperatures. Sensor technologies shall be beneficiary of such designed arrays and promising improvements in terms of detection threshold limit and sensitivity, selectivity, response time, and temperature of operation of chemical, gas, and bio-sensors are foreseen with the use of such purpose-built materials. For instance, better sensitivity and selectivity is foreseen due to the optimized architecture such as exposed faces as well as faster response (i.e., lower latency time) due to the direct growth of the nanorod bundles onto various substrates, their perpendicular orientation and their anisotropy along preferential crystal axis, which offers a direct and very efficient electron pathway for amperometric sensors. The synthetic strategy to develop such new anisotropy and well-defined surface morphology and the results obtained on ZnO oriented nanorod-based gas sensors are presented.
Document Type: Research Article
Publication date: 2008-12-01
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites