We report a novel approach for the detection of volatile compounds employing electrostatically driven drumhead resonators as sensing elements. The resonators are based on freestanding membranes of alkanedithiol cross-linked gold nanoparticles (GNPs), which are able to sorb analytes from the gas phase. Under reduced pressure, the fundamental resonance frequency of a resonator is continuously monitored while the device is exposed to varying partial pressures of toluene, 4-methylpentan-2-one, 1-propanol, and water. The measurements reveal a strong, reversible frequency shift of up to ∼10 kHz, i.e., ∼5

作者：Hendrik, Schlicke；Malte, Behrens；Clemens J, Schr?ter；Gregor T, Dahl；Hauke, Hartmann；Tobias, Vossmeyer

来源：ACS sensors 2017 年 2卷 4期