This paper presents a capacitive acoustic emission sensor with movable electrodes, which operate at stopband. Stopband electrodes cannot be excited by an AE signal, while the substrate vibrates with ...

Acoustic emission (AE)-based fault diagnosis in structural health monitoring (SHM) systems faces challenges of data scarcity and model overfitting due to the complexity of AE data acquisition and the ...

NEMS make particularly sensitive sensors, of chemicals and acceleration, for example. NEMS also offer the possibility of observing quantum effects in systems much larger than few-atom ensembles.

Methane sensing technologies have wide applications, including leak detection and repair in the energy sector and emissions monitoring from landfills and agriculture. Lower-cost units, as opposed to ...