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Presented is a novel silicon piezoresistive double-clamped beam with nano-thickness. It senses double-side surface-stress induced by molecular self-assembly or specific bio/chemical reaction. For the first time, both theoretical analysis and experiments results indicate that, when the thickness is down-scaled into nano-scale, the sensitivity of the clamped-beam piezoresistive self-sensing beam will...
A novel hexa-fluoro-isopropanol-functionalized mesoporous-silica (HFMS) is constructed and loaded on integrated resonant micro-cantilevers for specific detection of trace-level trinitrotoluene (TNT) vapor. With an ultra-high specific-surface-area, an ultra-dense specific sensing-groups and an optimized pore size, the micro/nano combined cantilever sensors have shown TNT detection-limit of about 10...
This paper reports a method for recycled immobilizing and erasing antibody at micro-cantilever surface by a coordination-bond breaking and re-linking technique. With the new method, the sensor can be re-used to immuno-detect bio-molecules for many times. By our sensing experiment to killed vaccine of Bacillus Anthracis (BA) spores with concentration of 2000 spores/ml for three times, the target loaded...
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