A new transistor capable of revolutionising technologies for medical imaging and security screening has been developed by graphene researchers from the Universities of Manchester and Nottingham.
Writing in Nature Communications, the researchers report the first graphene-based transistor with bistable characteristics, which means that the device can spontaneously switch between two electronic states. Such devices are in great demand as emitters of electromagnetic waves in the high-frequency range between radar and infra-red, relevant for applications such as security systems and medical imaging.
Bistability is a common phenomenon – a seesaw-like system has two equivalent states and small perturbations can trigger spontaneous switching between them. The way in which charge-carrying electrons in graphene transistors move makes this switching incredibly fast – trillions of switches per second.
Wonder material graphene is the world’s thinnest, strongest and most conductive material, and has the potential to revolutionise a huge number of diverse applications; from smartphones and ultrafast broadband to drug delivery and computer chips. It was first isolated at The University of Manchester in 2004.
The device consists of two layers of graphene separated by an insulating layer of boron nitride just a few atomic layers thick. The electron clouds in each graphene layer can be tuned by applying a small voltage. This can induce the electrons into a state where they move spontaneously at high speed between the layers.
Because the insulating layer separating the two graphene sheets is ultra-thin, electrons are able to move through this barrier by ‘quantum tunnelling’. This process induces a rapid motion of electrical charge which can lead to the emission of high-frequency electromagnetic waves.
These new transistors exhibit the essential signature of a quantum seesaw, called negative differential conductance, whereby the same electrical current flows at two different applied voltages. The next step for researchers is to learn how to optimise the transistor as a detector and emitter.
One of the researchers, Professor Laurence Eaves, said: “In addition to its potential in medical imaging and security screening, the graphene devices could also be integrated on a chip with conventional, or other graphene-based, electronic components to provide new architectures and functionality.
“For more than 40 years, technology has led to ever-smaller transistors; a tour de force of engineering that has provided us with today’s state-of-the-art silicon chips which contain billions of transistors. Scientists are searching for an alternative to silicon-based technology, which is likely to hit the buffers in a few years’ time, and graphene may be an answer.”
The Latest Bing News on:
Revolutionary transistor technology
- Low-side Driver Market is set to see Revolutionary growth in decadeon March 30, 2023 at 2:54 pm
Fairchild Semiconductor, Microchip Technology, Renesas Electronics and Analog Devices, etc. In 2021, the global top five players had a share approximately Percent in terms of revenue. In terms of ...
- The Unbelievable Zombie Comeback of Analog Computingon March 30, 2023 at 3:00 am
Computers have been digital for half a century. Why would anyone want to resurrect the clunkers of yesteryear?
- 2 Semiconductor Stocks Beating Near-Term Uncertainty in Industryon March 27, 2023 at 11:36 am
Companies in the Semiconductor – General industry are at the forefront of the ongoing technological revolution based ... on the building-block side of technology, which makes it crucial for ...
- Tech icon Gordon Moore – a founder of Intel and author of ‘Moore’s Law’ – dies at age 94on March 26, 2023 at 7:32 pm
Intel co-founder Gordon Moore, a pioneer in the semiconductor industry whose "Moore's Law" predicted a steady rise in computing power for decades, died Friday at the age of 94, the company announced.
- The man who powered a revolution in electronicson March 25, 2023 at 10:27 am
Moore, who had wanted to be a teacher but could not get a job in education and later called himself the Accidental Entrepreneur, became a billionaire as a result of an initial $500 investment in the ...
- Gordon E Moore: an accidental entrepreneur who pioneered the chip industry revolutionon March 25, 2023 at 5:34 am
Famous for Moore's Law, he predicted that the number of transistors that could be placed on a silicon chip would double at regular intervals for the foreseeable future, thus increasing the data-proces ...
- Intel co-founder Gordon Moore, prophet of the rise of the PC, dies at 94on March 24, 2023 at 8:52 pm
Intel Corp co-founder Gordon Moore, a pioneer in the semiconductor industry whose "Moore's Law" predicted a steady rise in computing power for decades, died Friday at the age of 94, the company ...
- NEUMONDA Technology Completes Prototype Of Its Revolutionary IC And DRAM Test Boardon March 22, 2023 at 7:08 am
2023 /einpresswire.com / -- NEUMONDA Technology, the IP and innovation arm of the NEUMONDA Group, has successfully completed the first prototype of its revolutionary new IC and DRAM test board.
- I Saw the Face of God in a Semiconductor Factoryon March 21, 2023 at 3:00 am
As the US boosts production of silicon chips, an American journalist goes inside TSMC, the mysterious Taiwanese company at the center of the global industry.
The Latest Google Headlines on:
Revolutionary transistor technology
[google_news title=”” keyword=”revolutionary transistor technology” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
The Latest Bing News on:
Graphene-based transistor
- Graphene Electronics Market Outlook and Forecast till 2030on March 28, 2023 at 7:04 pm
What is the Graphene Electronics market growth? Graphene Electronics Market Size is projected to Reach Multimillion USD by 2028, In comparison to 2023, at unexpected CAGR during the forecast Period ...
- Graphenest and Hubron Team Up to Examine Graphene Developmenton March 28, 2023 at 6:11 am
Graphene Flagship affiliated member Graphenest and manufacturer Hubron International established a new strategic alliance in February 2023.
- Graphene grows—physicists find a way to visualize iton March 24, 2023 at 1:27 pm
Graphene is one of the strongest materials. On top of that, it is exceptionally good at conducting heat and electrical currents, making it one of the most special and versatile materials we know.
- Graphene grows -- and we can see iton March 23, 2023 at 5:00 pm
Graphene is the strongest of all materials. On top of that, it is exceptionally good at conducting heat and electrical currents, making it one of the most special and versatile materials we know. For ...
- Gain a Competitive Edge with Our In-Depth Analysis of the Market Trends [2030]on March 23, 2023 at 12:50 am
GlobalMolecule-based Transistors Market(2023-2030) Latest Research Report | Industry research report provides key ...
- New method gets better performance out of atomically thin transistorson March 21, 2023 at 10:16 pm
Atomically thin materials like graphene are single molecules in ... describes a method of doing wafer-scale production of transistors based on two-dimensional materials. And the resulting ...
- New machine-learning approach identifies one molecule in a billion selectively, with graphene sensorson March 20, 2023 at 9:35 am
Such shortcomings of graphene-based sensors hinder selective gas detection and molecular species identification in atmospheric air, which is required for applications in environmental monitoring ...
- 3D Printing Circuitry With Graphene-Based Conductive Filamenton March 15, 2023 at 5:00 pm
The company has added graphene to 3DP filament to strengthen the material and add conductivity to prints made with it. The material, Black Magic 3D, is a PLA incorporating proprietary nano-composite ...
- Phosphorus sets the pace in high-performance transistorson March 13, 2023 at 8:23 am
Ultrathin phosphorus semiconductors that become metallic when stacked can tackle resistance issues and boost transistor performance.
- Graphene Flagship spin-off company INBRAIN Neuroelectronics wins prestigious innovation awardon February 28, 2023 at 9:18 am
Moreover, graphene-based technology is less invasive than current technology implanted in the brain, which is typically made of platinum and iridium. It also offers the possibility to identify ...
The Latest Google Headlines on:
Graphene-based transistor
[google_news title=”” keyword=”graphene-based transistor” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]