Nanoscale Devices, Sensors and Detectors
Marshall University, US
bio-sensors, field emission, detectors
The dimensionality of a system has a profound influence on its physical behaviour, more specifically for the nanostructured materials where the size is comparable with the size of the fundamental physical quantities. Carbon based nanostructured materials exhibit unique mechanical, electrical, and optical characteristics, which may result in many unique device designs. The materials are biocompatible, chemically inert but capable of altering electronic properties in presence of some chemical species, dimensionally compatible with biomolecules, and have interesting electronic characteristics, hence rendering them as potential chemical and biosensors. A recent heightened awareness of the potential for inadvertent or deliberate contamination of the environment, food and agricultural products has made decentralized sensing an important issue for several federal agencies. Recent progress in nanostructured materials and its possible applications in chemical and biological sensors could have a significant impact on data collection, processing, and recognition. Our present and ongoing investigation is aimed towards evaluating the applications of nanostructures of carbon and other materials in unique devices and sensors. Field emission in carbon nanotubes is used to detect environmental emission and atomic force microscopy and surface plasmon resonance are used for the detection of E-coli O157:H7 immobilized on layers of nanoparticles. Such devices display unique characteristics, morphological flexibility, and biocompatibility. We will report our recent work on nanostructured and nanoscale device designs and chem-bio sensor platforms.
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Nanotech 2005 Conference Program Abstract