MIP-Coated Microbeam Mass Sensing Utilizing Noise Squeezing Effect in Parametric Resonance
2014
Hochschulschrift
Zugriff:
A real-time explosive gas sensing (DNT) in atmospheric pressure utilizing the noisesqueezing eect that occurs before a bifurcation event is investigated. A noise-squeezingcontroller based on the statistics of phase noise is implemented using high-speed Lab-VIEW eld programmable gated array. A high frequency TNT-molecularly imprintedxed-xed microbeam sensor utilizes this nontraditional sensing strategy and performsDNT sensing at various concentrations. Experiments are conducted using both noisebasedand sweep-based bifurcation tracking for a direct comparison. Results demonstratenoise-based bifurcation tracking is not only capable of performing reliable frequencytracking, but also show the method is superior to the bifurcation sweep-basedtracking. Over three orders of magnitude improvement in acquisition rate is achieved,and as a result, condence and precision on bifurcation frequency estimation is signi-cantly improved over the bifurcation sweep tracking method, enabling DNT sensing atconcentrations much below sub-ppb (parts-per-billion) level.
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MIP-Coated Microbeam Mass Sensing Utilizing Noise Squeezing Effect in Parametric Resonance
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Autor/in / Beteiligte Person: | Li, Lily L. |
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Veröffentlichung: | 2014 |
Medientyp: | Hochschulschrift |
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