AISSMS Polytechnic - Next Trends In The Electronics

For several years only silicon was used in electronics, but considering the current advances and availability in the materials, engineering has announced new paths for electronics.

Some new substitutes include the following:
1. 2-D electronics

Background – The growing research attention towards 2D semiconductors started with a discovery by Geim and Novoselov et al. in 2004, when they reported a new semiconducting material graphene. Carbon atoms in graphene form a hexagonal two-dimensional lattice, and this atom-thick layer draws attention due to its high electrical and thermal conductivity, superior mechanical strength, very high carrier motilities and very high tensile strength.

In 2010, the Royal Swedish Academy of Sciences decided to award the Nobel Prize in Physics for “groundbreaking experiments” in graphene research to Andre Geim and Konstantin Novoselov.

Examples- Transistors, chemical sensors, biological sensors, environmental sensors. Photo detectors, LASERS, and LEDs are some other 2D devices. Several companies around the world, including Samsung and Apple are developing applications based on graphene.

2. Spintronics

Background- Spintronics is known as magneto electronics and is developed from the discoveries in the 1980s, concerning spin-dependent electron transport phenomena in solid-state devices. Until now, spintronic technology has been experienced in information-storage devices, such as hard drives and spin-based transistors. The magnetic layers in the spintronic devices serve as spin polarizers or analyzers separated by non-magnetic layers through which the spin-polarized electrons are transmitted.

Properties-

• The capability to operate four instead of only two, plus, defined logic states results in greater information-processing power, higher data transfer speed, and higher information-storage capacity.
• It is estimated that spin transport electronic devices will be smaller, more flexible, and more tough compared to their silicon counterparts.
• Spintronic devices provide a new mode to manipulate the magnetization of magnetic nanostructures by a spin-polarized current.

3. Memristor

Background– The memory–resistor i.e. Memristor is a fundamental two-terminal circuit element defined as a nonlinear relationship between the integral of the voltage and the integral of the current. Each electronic circuit is made up of three passive components such as inductors, capacitors, and resistors, but there is a fourth component called memristor; these are semiconductors used to create low power consuming storage devices. Memristors are non-volatile components that have very high storage as well as speed. As the name directs, memristor performs equally like a conventional resistor but it has memory in the sense that its instantaneous resistance depends on the history of its input.

Properties-

• High speed transistors and flexible displays for mobile devices.
• Ultrasensitive and label free sensors and more efficient energy storage devices.

4. Organic Electronics

Background– Organic electronics deal with organic materials, such as polymers or small molecules. The resources used in this kind of technology are carbon-based, which are similar to the molecules of living things. Another class of organic semiconductors is polymers which are soluble in common solvents such as Chloroform or Xylene and their films can be formed by even simpler methods of spin coating.

Properties–

• Cost effective, mechanical flexibility, adaptable to synthesis processes, and lightweight as compared to conventional electronic materials making organic electronics an appropriate choice for definite applications.

READ FULL ARTICLE AT Next Trends In The Electronics by Author, Mrs. V. S. Gaikwad. , Head Of Department - Electronics And Telecommunication , AISSMS Polytechnic, Pune