Surface Charge Dependence of the Direct Piezoelectric Response of a Room Temperature Ionic Liquid: Implications for Nanoscale Control over Sensing and Actuation

. The dependence of the RTIL direct piezoelectric response on the surface charge correlates with the ability to modulate the surface-induced charge density gradient seen in RTILs, establishing an empirical connection between the direct and converse piezoelectric responses in RTILs.