IEC 257 |
| Wan Y. Shih, G. Campbell, J. W. Yi, R. Mutharasan, and W. H. Shih. Department of Materials Engineering, Drexel University, Philadelphia, PA 19104 |
| Miniaturized highly piezoelectric cantilevers offer the advantage of simple electric detection and better capabilities to withstand damping in water. It is especially suitable for in-situ aqueous detection of bioagents or microbes. Addition of mass to a cantilever reduces its resonance frequency and can be detected by monitoring the resonance frequency shift. Detection of cells, e.g., proteins, and specific antigen-antibody binding, e.g., biotin-avidin binding, and application to in situ E coli quantification using a PZT/stainless steel piezoelectric unimorph cantilever will be presented. Mass detection sensitivity with respect to cantilever size and the fabrication and characterization of the miniaturized strontium lead titanate [SrxPb(1-x)TiO3]/Si3N4 unimorph cantilevers will also discussed.
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Nanotechnology and the Environment
1:30 PM-5:15 PM, Thursday, March 27, 2003 Convention Center -- Room 392, Oral
Division of Industrial and Engineering Chemistry |