Figure 1. A three-dimensional integrated circuit, made possible with carbon nanotubes (CNTs). The circuit senses and classifies ambient gases using a multilayered stack of devices that are connected by platinum wires known as interlayer vias. In the top layer, roughly 1 million CNT field-effect transistors (FETs) register a change in electrical resistance when the gas molecules adsorb on a CNT. The second layer hosts memory cells that read and store the signals created by the FETs just above them. The third layer contains another million FETs that process the sensor data and implement a machine-learning algorithm to identify the type of gas picked up. Conventional silicon CMOS circuitry on the bottom acts as an interface to external devices. (Adapted from ref. 2.)

Topics: Carbon Nanotubes, Computer Engineering, Nanotechnology, Quantum Mechanics

In 2013 graduate student Max Shulaker, his adviser Subhasish Mitra, Philip Wong, and their Stanford University colleagues built the first computer made entirely of carbon nanotube (CNT) field-effect transistors (FETs). 1 The achievement was eagerly anticipated. Even before their first incorporation into FETs in 1998, CNTs had been touted as a superior substitute for the silicon channel that shuttles current between the traditional FET’s source and drain electrodes.

The intrinsic thinness of single-wall CNTs—essentially graphene sheets rolled into hollow cylinders a nanometer wide—enables superb control over power dissipation in the transistor’s off state and allows the transistor to switch off and on with much lower energy consumption than is possible with any other material. Moreover, thanks to that one-dimensionality, which suppresses scattering, charge carriers in CNTs have a much higher velocity for a given electric field than in Si. (See the article by Phaedon Avouris, Physics Today, January 2009, page 34.)

The 2013 computer was modest: It contained fewer than 200 FETs, ran at a clock speed of just 1 kHz, and implemented a single instruction. Nonetheless, the instruction was a conditional statement that qualified the computer as “Turing complete,” able to make any calculation given enough memory and time. The achievement also reassured Shulaker, now a professor at MIT, and his Stanford colleagues that CNTs could form the foundation for a much more complex system.

The researchers have now built a prototype system that embodies a vision of a transformative computer architecture—one in which computing, data storage, and input and output technologies are each fabricated into two-dimensional layers that are built up into a 3D integrated circuit.2 Shown schematically in figure 1, the circuit consists of more than 2 million CNT FETs and more than 1 million memory cells. The components are divided among three layers—stacked on the same chip atop a layer of Si CMOS circuitry and interconnected by a forest of fine platinum wires.

The carbon nanotube integrated circuit goes three-dimensional R. Mark Wilson, Physics Today

Views: 47

Comment

You need to be a member of BlackScienceFictionSociety to add comments!

Join BlackScienceFictionSociety

Badge

Loading…

IMPORTANT ALERTS

ALERT! ALERT! ALERT! 

IF YOU ARE HAVING TROUBLE CHANGING YOUR PROFILE  PICTURE, SWITCH TO EITHER CHROME BROWSWER OR FIREFOX. THERE IS A KNOWN ISSUE WITH INTERNET EXPLORER THAT CAUSES TROUBLE CHANGING PICTURES.


PLEASE DO NOT SIGN IN WITH FACEBOOK IF YOU ALREADY HAVE AN ACCOUNT. YOU WILL CREATE A DUPLICATE THAT WILL NOT HAVE YOUR INFO CONNECTED. THANKS

NO SPAMMING

Please do not greet everyone on the site with large images and/or announcements of your book or business. Yes, you want to tell the world, but learn the fine art of subtlety. We have lost numerous members because of the amount of 'friend' mail they instantly receive. This Hurts Everyone.

Also, DO NOT post the same information multiple times throughout the site. It will be deleted without notice.

 

Spam is unsolicited advertising, whether it is posted as comments on other members' pages or is emailed for marketing purposes.

 

Please be considerate. Post your advertisement in the proper Articles/Forum or Group. There are inexpensive marketing channels that reach every member for just $25 on the Advertising tab. You can post your information on your profile and even update your blog as often as you like.

 

We are not into censorship, so please don't make us ask you to leave. Be kind and unselfish - don't spam.

 

Your Account Will Be Deleted Without Warning For Spam.

 

Blog Posts

Mimicking Nature...

Posted by Reginald L. Goodwin on September 24, 2018 at 5:30am 0 Comments

Image Source: Link below

Topics: Alternative Energy, Chemistry, Green Energy, Nanotechnology, Photosynthesis

During photosynthesis, plants split water into hydrogen ions and oxygen. If researchers could devise a method to mimic nature,…
Continue

Impact...

Posted by Reginald L. Goodwin on September 21, 2018 at 5:30am 0 Comments

Topics: Civil Rights, Diversity, Human Rights, Politics

Charles Blow revealed his own assault experiences on CNN. It was courageous but not hard to believe, as every 98 seconds an American is sexually assaulted; 15 persons per day.…
Continue

Fallback Disk...

Posted by Reginald L. Goodwin on September 20, 2018 at 5:30am 0 Comments

A group of researchers recently observed a mysterious infrared emission coming from near a pulsar in NASA's Hubble Space telescope data. This animation depicts one possible source of the emission: a "fallback disk" or a disk that formed from materials of the parent star falling back into the neutron star after a supernova. Credit: ESA/N. Tr’Ehnl (Pennsylvania State University)/NASA

Topics: Astrophysics, Infrared, Neutron Stars, Neutrons,…

Continue

The Enslavement of the "Black Art Movement"

Posted by Turtel Onli on September 19, 2018 at 8:30am 0 Comments

During the heady days of the Black Cultural revolution in Chicago, there was a lot of art dealing with this hope and concept.  The mainstream galleries, Black art curators, historians and critics mostly stayed away from it.  Then once certain major players in this died in came the White parasites.  One a college professor the other a Jewish art dealer.  Both swooped in making deals to sell works, with the other building a entire career path for herself.  Now they are the accepted go-to authorities of this movement. That they treat as a dead slave on their plantations. "The Black Art Movement" now produces no revenue or power for the people it were supposed to benefit.

And all of this happened due to the "Black on Black boycott" that allowed non-Blacks to walk in a take it to the bank.  WHen Black do not support and endorse its own positives others come in later to reap its resources, power & wealth.

Sort of like Jazz, The Blues, Peanut Butter and Hip…

Continue

Schrödinger's Temperatures...

Posted by Reginald L. Goodwin on September 19, 2018 at 5:30am 0 Comments

A new uncertainty principle holds that quantum objects can be at two temperatures at once, which is similar to the famous Schrödinger's cat thought experiment, in which a cat in a box with a radioactive element can be both alive and dead. Credit: Shutterstock

Topics: Heisenberg Uncertainty Principle, Nanotechnology, Schrödinger's cat, Quantum Mechanics, Thermodynamics…

Continue

Tunable Quantum States...

Posted by Reginald L. Goodwin on September 18, 2018 at 5:30am 0 Comments

When the researchers turn an external magnetic field in different directions (indicated with arrows), they change the orientation of the linear electron flow above the kagome (six-fold) magnet, as seen in these electron wave interference patterns on the surface of a topological quantum kagome magnet. Each pattern is created by a particular direction of the external magnetic field applied on the sample.

Image by M. Z. Hasan, Jia-Xin Yin, Songtian Sonia Zhang, Princeton University…

Continue

Textbook...

Posted by Reginald L. Goodwin on September 17, 2018 at 5:30am 0 Comments

Topics: Civil Rights, Diversity, Existentialism, History, Human Rights

Republicans: Founded in 1854 by anti-slavery expansion activists and modernizers, the Republican Party quickly surpassed the Whig Party as the principal opposition to the Democratic Party. In 1860, it came to power with the election of Abraham Lincoln to the presidency. The party presided over the American Civil War and Reconstruction and was harried by internal factions and scandals toward the end of the 19th century. Today, the party supports a conservative platform (from an American political perspective), with further foundations in supply-side fiscal policies,…
Continue

Cynical Capitalism...

Posted by Reginald L. Goodwin on September 14, 2018 at 5:30am 0 Comments

Image Source: AARP, which up to this moment, I didn't realize was so "woke."

Topics: Climate Change, Existentialism, Global Warming, Star Trek

The home world of the Ferengi species is…
Continue

The Digital Brothers Multimedia

The Digital Brothers
Our goal is to provide cost effective technological solutions for home, small and big business. After over 20 years of service working in this field, we decided to utilize our talents to develop and cultivate our own vision to benefit the community.
2D & 3D Animation
Graphic & Web Design
Photo & Video
Multimedia Development
Online & Print Marketing

Contact Us Today To Assist In Your Business Success
Website: www.TheDigitalBrothers.com
Email: info@thedigitalbrothers.com

SKYCITY TALKRADIO

THE UNDERGROUND BY ROXANNE BLAND

Life as alpha of a werewolf pack is anything but predictable. But even Parker Berenson is surprised by the latest twist: he’s fallen in love with a space alien. Problem is, he suspects Melera, his sexy new flame, might be the serial killer terrorizing Seattle. Or maybe she isn’t. After all, just because she’s an interstellar assassin doesn’t mean she’s guilty.

http://blackrosepress.com/

© 2018   Created by Jarvis Sheffield - Admin.   Powered by

Badges  |  Report an Issue  |  Terms of Service