Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > SRC-Supported Stanford Researchers Overcome Mispositioned Carbon Nanotubes to Create Logic Circuits at Wafer-Scale

Abstract:
Taming of Unruly CNTs, Demonstration of Full Wafer-Scale Growth, Transfer and Integration Are Steps Toward Making Nanotube Circuits Commercially Viable

SRC-Supported Stanford Researchers Overcome Mispositioned Carbon Nanotubes to Create Logic Circuits at Wafer-Scale

Research Triangle Park, NC | Posted on June 20th, 2008

Semiconductor Research Corporation (SRC), the world's leading university-research consortium for semiconductors and related technologies, today joined with researchers at Stanford University to announce multiple ‘firsts' demonstrated with carbon nanotubes (CNTs) to produce CMOS-compatible working circuits on a wafer scale. CNT Field-effect Transistors (FETs) are considered contenders for extending current CMOS technology to create higher-level chip capability.

The research is funded by the Focus Center Research Program (FCRP), a subsidiary of SRC.

Efforts to perfect CNT technology to the point necessary to be considered for affordable and practical application in computer chips have been underway since the first CNT transistor was demonstrated one decade ago.

The Stanford research presented yesterday at the 2008 Symposia on VLSI Circuits and Technology in Honolulu, Hawaii, has yielded progress toward this goal that includes:

-- Demonstration of full-wafer-scale growth of directional CNTs on single-crystal quartz wafers;

-- Demonstration of full-wafer-scale CNT transfer from quartz wafers to silicon wafers for integration on silicon;

-- Fabrication of logic structures that are immune to mispositioning of CNTs. These complex logic structures include NAND, NOR, AND-OR-INVERT and OR-AND-INVERT on a full-wafer-scale.

The accomplishments are rooted in the Stanford team's invention of a design technique that creates logic cells which function correctly even in the presence of mispositioned CNTs.

"At the nanoscale, it's nearly impossible to guarantee that all carbon nanotubes will be placed at correct positions and aligned to create a functional circuit. So the question is: if we can't control these layout requirements, how can we create working circuits?" noted Betsy Weitzman, director of the FCRP. "This exciting research has brought forward a significant breakthrough for the application of CNTs in CMOS circuits -- very efficient and effective design solutions that don't require super-precise placement of the CNTs. The Stanford researchers developed an inexpensive design flow that is compatible with CMOS processing and have demonstrated that their designs can be fabricated at VLSI scale. This can clearly facilitate a breakthrough for future CMOS chip technologies."

Progress from the research could benefit chipmakers and their customers who need more advanced chips for communications, computing, security, automotive and consumer electronics, and a wide range of other applications that are dependent on silicon chip performance.

"This is the first time that anyone has experimentally demonstrated that it is possible to fabricate robust, imperfection-immune CNT-based circuits at full wafer-scale without paying the price of expensive defect and fault-tolerance techniques," said Professor Subhasish Mitra of Stanford. "The fact that these techniques are compatible with VLSI processing and have minimal impact on VLSI design flows can contribute significantly to continued advancement of Moore's Law."

Joining Professor Mitra in the research are Stanford engineering students Nishant Patil and Albert Lin, Stanford research staff member Edward Myers, and electrical engineering Professor H.-S. Philip Wong.

"Our progress potentially brings the academic and industrial communities an important step closer to the day when carbon nanotube technologies can supplement silicon CMOS technology as the technology of choice for the semiconductor industry," said Wong.

Per its charter, SRC-FCRP will continue to take a lead role in collaborating on enhancements to the academic research agenda for materials and processes associated with semiconductor manufacturing.

####

About Semiconductor Research Corporation (SRC)
Celebrating 26 years of collaborative research for the semiconductor industry, SRC defines industry needs, invests in and manages the research that gives its members a competitive advantage in the dynamic global marketplace. Awarded the National Medal of Technology, America’s highest recognition for contributions to technology, SRC expands the industry knowledge base and attracts premier students to help innovate and transfer semiconductor technology to the commercial industry.

For more information, please click here

Contacts:
SRC (Cardinal Communications)
Scott Stevens
+1-512-413-9540

Copyright © Business Wire 2008

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Rare-earths become water-repellent only as they age March 22nd, 2017

Chip Technology

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Pulverizing e-waste is green, clean -- and cold: Rice, Indian Institute researchers use cryo-mill to turn circuit boards into separated powders March 21st, 2017

Electro-optical switch transmits data at record-low temperatures: Operating at temperatures near absolute zero, switch could enable significantly faster data processing with lower power consumption March 20th, 2017

UC researchers use gold coating to control luminescence of nanowires: University of Cincinnati physicists manipulate nanowire semiconductors in pursuit of making electronics smaller, faster and cheaper March 17th, 2017

Nanoelectronics

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

UC researchers use gold coating to control luminescence of nanowires: University of Cincinnati physicists manipulate nanowire semiconductors in pursuit of making electronics smaller, faster and cheaper March 17th, 2017

A SOI wafer is a suitable substrate for gallium nitride crystals: Improved characteristics in power electronics and radio applications can be achieved by using a SOI wafer for gallium nitride growth March 4th, 2017

Smart multi-layered magnetic material acts as an electric switch: New study reveals characteristic of islands of magnetic metals between vacuum gaps, displaying tunnelling electric current March 1st, 2017

Discoveries

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Rare-earths become water-repellent only as they age March 22nd, 2017

Announcements

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Rare-earths become water-repellent only as they age March 22nd, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project