Research Article

Real-Time Characterization of Electrospun PVP Nanofibers as Sensitive Layer of a Surface Acoustic Wave Device for Gas Detection

Figure 4

Frequency shift (a) and increasing of the attenuation (b) of the SAW sensor measured in real time due to the PVP electrospun fibers deposited at several applied voltages for a needle-to-collector distance of 11 cm.
243037.fig.004a
(a)
243037.fig.004b
(b)