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A linear one-dimensional dissipative model is proposed and applied in obtaining numerical simulation results for coupled double quantum dot cells, for single-electron transport dynamics on each cell. Field coupling between cells is modeled simply from a matrix of mutual capacitances. Bistability with only one excess electron on each cell, in a pair of coupled double-dot cells, is demonstrated. Behavior prediction and performance evaluation, for applications such as computational system implementation, are made possible. It is understood from the simulations that balanced dissipation rates are essential for the implementation of optimized single-electron devices, with short settling times. [ABSTRACT FROM AUTHOR]

The authors have observed hysteretic behavior and negative differential resistance in single-layer devices made from buriti oil mixed with polystyrene and sandwiched between poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) and silver (Ag) electrodes. The hysteresis curve shows not only two different values of current but different behaviors as the increasing voltage curve shows negative differential resistance and the decreasing voltage curve does not. The fact that a simple fabrication technique yields reproducible conductance switching and hysteresis is relevant for the development of theories of organic electronic device behavior. [ABSTRACT FROM AUTHOR]