Between the wire and the wall of the tube a high voltage is applied.
Times, Sunday Times (2010)
We have explored the non-linear and photoconductive behavior as a function of applied voltage, laser pulse energy and temperature.
Tobias Peterseim, Martin Dressel 2017, 'Light-Induced Current Oscillations in the Charge-Ordered State of (TMTTF)2SbF6', Crystals