Fig. 1
From: Precise engineering of quantum dot array coupling through their barrier widths
QD arrays generated by single-wall (SW) and double-wall (DW) nanoporous networks that confine the surface 2DEG. a, b Schematic representations of the concept behind SW and DW networks. c, d Chemical structures and electrostatic potential maps of Br-DNT and Br-DNF. e, f Large-scale STM topographies for the SW network with Br-DNT and the DW network with Br-DNF. Insets show close-views of each network. g, h High resolution atomic force microscopy (AFM) images of the SW network and DW network. Measurement parameters: tunneling current I = 5 pA, bias voltage V = 200 mV (e, f); V = 0 mV, oscillation amplitude A = 60 pm (g, h).
