IBM Demos 100GHz Graphene Transistor

Graphene Transistor illustration (IBM)

Scientists at IBM have demonstrated a radio-frequency graphene transistor running at 100 GHz—that’s 100 billion cycles per second—the highest frequency achieved so far for a graphene device. Although the technology is a long way from making it into computers, game consoles, or cell phones, it does start to pave the way for ever-faster chips and communications gear using carbon-based electronics—and IBM’s demo was built at a comparatively mammoth 240nm scale, leaving the company plenty of room to shrink down the technology using existing fabrication technology uses for silicon wafers—current tech can crunch down gate sizes to under 35 nm.

“A key advantage of graphene lies in the very high speeds in which electrons propagate, which is essential for achieving high-speed, high-performance next generation transistors,” said IBM Research VP of Science and Technology Dr. T.C. Chen, in a statement. “The breakthrough we are announcing demonstrates clearly that graphene can be utilized to produce high performance devices and integrated circuits.”

Graphene is a one-atom-thick layer of carbon atoms bonded in a hexagonal arrangement that resembles chickenwire, and has unique physical properties. IBM’s graphene transistors are running at room temperature. In comparison to graphene transistors, silicon transistors with the same gate length top off at about 40 GHz, and the graphene transistors are now beating out all but the highest-frequency GaAS transistors.

The graphene RF transistors were originally developed for the Defense Advanced Research Project Agency (DARPA—the same folks who originally brought you the Internet) with an eye towards replacing GaAs transistors in military communications systems.

Image credit: IBM

Computing

Latest Facebook bug exposed up to 6.8 million users’ private photos

An API bug recently left an impact on Facebook users. Though the issue has since been fixed, some of the apps on the platform had a wrongful access to consumers photos for 12 days between September 13 and September 25. 
Home Theater

How to master your equalizer settings for the perfect sound

You may know what an EQ is, but do you know how to adjust equalizer settings for the best possible sound? We go through the basics of the modern EQ and lay out some guidelines for how to achieve tip-top sound from your system.
Emerging Tech

We’re going to the Red Planet! All the past, present, and future missions to Mars

SpaceX isn't the only organization pining to visit the Red Planet. Here's a detailed list of all operational and planned missions to Mars, along with explanations of their objectives, spacecraft details, and mission proposals.
Mobile

5G’s arrival is transforming tech. Here’s everything you need to know to keep up

It has been years in the making, but 5G is finally becoming a reality. While 5G coverage is still extremely limited, expect to see it expand in 2019. Not sure what 5G even is? Here's everything you need to know.
Photography

From DSLRs to mirrorless, these are the best cameras you can buy right now

From entry-level models to full-frame flagships, many cameras take great photos and video. The best digital cameras, however, push the industry forward with innovative sensors and improved usability, among other things. Here are our…
Computing

You can now get a Surface Laptop 2 for $800 at the Microsoft Store

Along with deals on other variants, starting configurations of Microsoft's Surface Laptop 2 are now going for $800 online at its retail store, cutting $200 from its usual $1,000 starting price. 
Computing

You’ll soon be able to scribble all over PDFs on your Chromebook

Chrome OS users may soon be able to doodle all over their PDF documents with the possible addition of a new feature in Chrome OS' PDF viewer. The annotation feature is expected to allow users to hand draw or write over their documents.
Computing

Need a monitor for professional photo-editing? These are the very best

Looking for the best monitor for photo editing? You'll need to factor in brightness, color accuracy, color gamut support and more. Fortunately, we've rounded up the best ones for you, to help you make an educated purchase.
Computing

HDR monitors are beginning to have an impact. Here are the best you can buy

HDR isn't the most common of PC monitor features and is often charged at a premium, but the list of available options is growing. These are the best HDR monitors you can buy right now.
Virtual Reality

Oculus Rift vs. HTC Vive: Prices drop, but our favorite stays the same

The Oculus Rift and HTC Vive are the two big names in the virtual reality arena, but most people can only afford one. Our comparison tells you which is best when you pit the Oculus Rift vs. HTC Vive.
Computing

Microsoft’s Windows 95 throwback was just an ugly sweater giveaway

Microsoft's "softwear" announcement wasn't what we had hoped for. Thursday's announcement was not the new line of wearable tech or SkiFree monster sweater we wished for. But it did deliver the 90s nostalgia we wanted.
Home Theater

Confused about LED vs. LCD TVs? Here's everything you need to know

Our LED vs. LCD TV buying guide explains why these two common types of displays are fundamentally connected, how they differ, what to look for in buying an LED TV, and what's on the horizon for TVs.
Computing

Canada’s winters inspired a startup to warm homes with cryptomining heat waste

Cryptomining may be the key to untold riches and the future of currency, but it’s also an environmental nightmare. Heatmine, thinks it has the answer, but it could mean bolting a mining rig onto every home and business in the country.
Deals

The best MacBook deals for December 2018

If you’re in the market for a new Apple laptop, let us make your work a little easier: We hunted down the best up-to-date MacBook deals available online right now from various retailers.