A constant high voltage and driving electric signal are applied between the membrane and back plate and they force the membrane to vibrate. Such transducer possesses a quite wide bandwidth but usually operate in the frequency range higher than a few hundreds of kHz [34–36]. In addition, they...
Influence of traffic force on pollutant dispersion of CO, NO and particle matter (PM 2.5) measured in an urban tunnel in Changsha, China. Tunn. Undergr. Space Technol. 2015, 49, 400–407. [CrossRef] 4. Raaschou-nielsen, O.; Andersen, Z.J.; Jensen, S.S.; Ketzel, M.; Sorensen,...
Its main working principle is to use electric field force to overcome the surface tension of the Taylor cone of solution or melt in the high voltage electric field environment, and the spinning liquid that undergoes charge transfer is stretched and refined to form nanofibers. Due to the high ...