A single-atom transistor is a device that can open and close an electrical circuit by the controlled and reversible repositioning of one single atom. The single-atom transistor was invented and first demonstrated in by Prof. Therefore, the single-atom transistor works as an atomic switch or atomic relay, where the switchable atom opens and closes the gap between two tiny electrodes called source and drain. At the same time, the device of the Karlsruhe team of researchers marks the lower limit of miniaturization, as feature sizes smaller than one atom cannot be produced lithographically. The device represents a quantum transistor, the conductance of the source-drain channel being defined by the rules of quantum mechanics.
nithi poyyil: seminar report on quantum transistor
Share to Facebook Share to Twitter. The Sziklai pair is a configuration of two bipolar transistors, similar to a Darlington pair. The configuration is named for its early popularizer, George C. In essence, a high gain super transistor, somewhat similar to a Darlington. But there are major differences.
Optical access to single erbium ions in silicon is appealing for integrating spin devices by coupling distant single spins using silicon-based optical cavities. Sign in to report inappropriate content. UNSW physicists have created a working transistor consisting of a single atom placed precisely in a silicon crystal.
February 19, In a remarkable feat of micro-engineering, UNSW physicists have created a working transistor consisting of a single atom placed precisely in a silicon crystal. The tiny electronic device, described today in a paper published in the journal Nature Nanotechnology , uses as its active component an individual phosphorus atom patterned between atomic-scale electrodes and electrostatic control gates. This unprecedented atomic accuracy may yield the elementary building block for a future quantum computer with unparalleled computational efficiency.