What are the applications of single-electron transistor?
2.3 Detection of Infrared Radiation The single-electron transistor can also be used to detect infrared signals at room temperature. By exciting electrons over an electrically induced energy barrier, both the range of detectable wavelengths and the sensitivity of the device can be controlled.
What are single electron transfer devices?
Single-electron devices are promising candidates for advanced logic and memory circuits where the bits can be defined using only a few electrons, leading to circuits with immunity from statistical fluctuations in the number of electrons per bit and very low power consumption.
What is a single-electron transistor How does it work?
A single-electron transistor (SET) is a switching device that consists of two tunnel junctions sharing a common electrode and makes use of this controlled electron tunneling for amplification of current. The technology used in single-electron transistors is based on the theory of quantum tunneling.
What is single electron?
A single-electron transistor (SET) is a sensitive electronic device based on the Coulomb blockade effect. In this device the electrons flow through a tunnel junction between source/drain to a quantum dot (conductive island).
What are the condition for single-electron transistor?
The single-electron transistor consists of a metallic island, placed between two tunneling junctions connected to a drain and a source and has a gate electrode as in a normal field- effect transistor. The tunneling junctions are simply a thin (<10 nm) oxide layer between the island and the electrodes.
What is single electron tunneling?
Single-electron tunneling devices can detect charges much smaller than the charge of an electron. This enables phenomenally precise charge measurements and it has been suggested that large scale integration of single-electron devices could be used to construct logic circuits with a high device packing density.
What is single electron box?
The Single Electron Box device is composed by an isolated metallic island (BOX) which is coupled via a tunnel junction with capacitance to an electrode and via a capacitance to a voltage source. (Fig. 6).
Which transistor is used in nanotechnology?
Nanotechnology-Inspired Transistor Applications However, the field-effect transistor is one that is often seen because of its versatility and compatibility with devices that have started to use nanomaterials in their core design.
What can you use quantum dots for?
Currently, quantum dots are used for labeling live biological material in vitro and in vivo in animals (other than humans) for research purposes – they can be injected into cells or attached to proteins in order to track, label or identify specific biomolecules.
What is Coulomb blockade effect?
When the dot becomes sufficiently small (Cdot is small) and ΔU starts to exceed the thermal energy, even a single electron cannot tunnel to the dot without the help of external gate bias to overcome the Coulomb repulsion of the dot. This effect is called Coulomb blockade and it is the basic of the operation of SETs.
What are the applications of nanomaterials in electronics industry?
They are the chips used in the manufacture of computers, CPUs, and all electronic and electrical devices. Nanotechnology is used in many electronic devices such as laptops, computers, cell phones, television, and digital cameras and also includes polymeric nano-films such as organic light-emitting diodes (OLEDs).
What is nanotechnology electronic devices?
Nanoelectronics – Nanotechnology in Electronics. The term nanoelectronics refers to the use of nanotechnology in electronic components. These components are often only a few nanometers in size. However, the tinier electronic components become, the harder they are to manufacture.
What are the applications of single-election devices?
These devices based on the controllable transfer of single electrons between small conducting “islands”, have already enabled several important scientific experiments. Several other applications of analog single-election devices in unique scientific instrumentation and metrology seem quite feasible.
Are single-electron tunneling devices suitable for digital applications?
Single-electron tunneling devices have been proposed as standards for DC currents (especially single-electron turnstiles and pumps), temperature and resistance, for the detection of infrared radiation, and have interesting prospects for digital applications.
What is a single-electron device?
The simplest single-electron device is the single-electron box, which consists of a gated island separated from an electron source by a single tunnel barrier ( Figure 13 ).
Can single-electron devices replace silicon transistors in integrated digital circuits?
Several other applications of analog single-election devices in unique scientific instrumentation and metrology seem quite feasible. On the other hand, the prospect of silicon transistors being replaced by single-electron devices in integrated digital circuits faces tough challenges and remains uncertain.