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- W1989291298 abstract "Satisfying the conditions of high sensitivity and high selectivity using portable sensors that are also reversible is a challenge. Miniature sensors such as microcantilevers offer high sensitivity but suffer from poor selectivity due to the lack of sufficiently selective receptors. Although many of the mass deployable spectroscopic techniques provide high selectivity, they do not have high sensitivity. Here, we show that this challenge can be overcome by combining photothermal spectroscopy on a bimaterial microcantilever with the mass induced change in the cantilever’s resonance frequency. Detection using adsorption-induced resonant frequency shift together with photothermal deflection spectroscopy shows extremely high selectivity with a subnanogram limit of detection for vapor phase adsorbed explosives, such as pentaerythritol tetranitrate (PETN), cyclotrimethylene trinitramine (RDX), and trinitrotoluene (TNT)." @default.
- W1989291298 created "2016-06-24" @default.
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- W1989291298 date "2008-05-01" @default.
- W1989291298 modified "2023-10-01" @default.
- W1989291298 title "Trace explosive detection using photothermal deflection spectroscopy" @default.
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- W1989291298 doi "https://doi.org/10.1063/1.2908181" @default.
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