  Advancements in the fabrication of silicon dangling bonds (SiDBs) reveal a
potential platform for clocked field coupled nanocomputing structures. This
work introduces PoisSolver, a finite element simulator for investigating
clocked SiDB systems in the SiQAD design tool. Three clocking schemes borrowed
from prior work on quantum-dot cellular automata are examined as potential
building blocks for a general clocking framework for SiDB circuits. These
clocking schemes are implemented in SiQAD, and power estimates are performed
with geometrically agnostic methods to characterise each clocking scheme.
Clocking schemes using a 14 nm technology node are found to dissipate 10-100 uW
cm-2 at 1 GHz and 1-10 W cm-2 at 1 THz.
