Extended Data Fig. 4: Further dielectric images.
From: In-plane dielectric constant and conductivity of confined water
a–c, Dielectric images of three channels taken at constant height and at characteristic f of 2 kHz, 2 MHz and 1.1 GHz, respectively. The plotted values of |dC/dz| are variations after subtracting the |dC/dz| values found at the centre of the hBN spacer region. Same devices as in Fig. 2b: h ≈ 5 and 1.5 nm, empty and filled with water (as specified in the legends). Scale bars, 500 nm.
