Color scale plot of the conductance G versus VBG and VSD. Shown at (a) T = 5 K and (b) T = 10 K. The back gate voltage swept from 40 to 45 V at a step of 100 mV. The irregular feature of the Coulomb blockade region in Figure 2a suggests a multi-quantum dot formation.
Chuang et al. Nanoscale Research Letters 2012 7:459 doi:10.1186/1556-276X-7-459