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NanoFANS Forum
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Cancer Nanotechnology
Mass-Sensitive Biochemical Microsensors
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NanoFANS Forum
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Shuming Nie is the Wallace H. Coulter Distinguished Chair Professor in Biomedical Engineering at Emory University and the Georgia Institute of Technology. His research interest is broadly in biomolecular engineering and nanotechnology.
John McDonald is taking an integrated systems approach to the study of cancer. This means that he views cancer not as a defect in any particular gene or protein, but as a de-regulated cellular/ inter-cellular process.
Mostafa El-Sayed is the Julius Brown Chair and Regents Professor in the School of Chemistry and Biochemistry at Georgia Tech. He researches Nanoscience and also investigates how Nanoparticles can be used in Nanomedicine, Nano Catalysis, and Nanophotonics.
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A resonant microsensor platform based on disk-type microstructures vibrating in an in-plane resonance mode for chemical and biochemical sensing applications in gas and liquid environments is presented. Based on measured short-term frequency stabilities of 1.1 10^-8 in air and 2.3 10^-6 in water, mass detection limits in the low femtogram and sub-picogram, respectively, are achieved. In a biosensing application, biomolecules are immobilized on the resonator surface. Upon selective binding of analyte molecules (e.g. via antibody-antigen binding), the mass of the resonator is increased, resulting in a measurable decrease of its resonance frequency. The feasibility of liquid-phase biosensing using the disk resonators is demonstrated experimentally by detecting anti-beta-galactosidase antibody using covalently immobilized beta-galactosidase enzyme.
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