How is Negative Resistance Achieved in Nanotechnology?
Negative resistance in nanotechnology is often achieved using materials and structures that exhibit quantum tunneling and resonant tunneling diodes (RTDs). These devices leverage the quantum mechanical properties of electrons to create a region of negative differential resistance (NDR). For instance, RTDs use a double-barrier quantum well structure to create conditions where electrons can tunnel through the barriers at specific energy levels, resulting in a drop in current as the voltage increases.
