Figure 3
From: Broadband tunable liquid crystal terahertz waveplates driven with porous graphene electrodes
Cell simulations. Three-dimensional simulations of the electrical field (a) at 0 Vrms and (b) at 50 Vrms as well as the LC director distributions (c) at 0 Vrms and (d) at 50 Vrms in the proposed THz waveplate. The top electrode is covered by a subwavelength metal wire grid, whereas the bottom one is an ITO electrode with micro-sized hollows. Pre-alignment is at 45° to the y axis in the x–y plane, and the cell gap is 250 µm. The color bar is marked in units of V μm−1. ITO, indium tin oxide; LC, liquid crystal; THz, terahertz.
