Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Research Helps Ensure Clean Integrated Circuit Manufacturing

Abstract:
Semiconductor Research Corporation (SRC), the world's leading university-research consortium for semiconductors and related technologies, and researchers from SEMATECH and The University of Texas at Dallas are the first to demonstrate that specific potentially hazardous organic contaminants present in a type of single-walled carbon nanotubes (SWNTs) can be easily removed. This discovery should enable the continued consideration of SWNTs for advanced nanoelectronics manufacturing, as this material shows promise for continuing the benefits of scaling with significantly reduced risk to the environment. In addition to semiconductor manufacturers, several other industries also could gain greater product effectiveness from this research.

Research Helps Ensure Clean Integrated Circuit Manufacturing

Research Triangle Park, NC | Posted on June 20th, 2011

The research team analyzed the potential risk of a variety of functionalized SWNTs, and found that one family of nanotubes, carboxylated single-walled carbon nanotubes (CSWNTs), reduced the ability of mammalian cells to grow in culture. This is considered to be evidence of toxicity. However, researchers also found that standard separation techniques could remove the contaminating material, indicating that the purified nanotubes themselves were not responsible for the observed toxicity. The data suggests that specific organic impurities present in the CSWNTs may be responsible for much of the concern associated with this material, and further work is in progress to test this idea.

"The process for removing the toxic material from the CSWNTs is relatively easy, and could be applied to this type of common SWNT if it's to be used in a semiconductor manufacturing facility," said Rockford Draper, Professor, Departments of Molecular & Biology and Chemistry at the University of Texas at Dallas. "These insights could affect the way companies purchase and use certain SWNTs."

SRC's Center for Environmentally Benign Semiconductor Manufacturing supports a major effort to understand, assess and screen emerging materials for their potential impact on human health, safety and the environment—well before they are considered for the manufacturing of integrated circuits.

"In the International Technology Roadmap for Semiconductors, SWNTs are positioned as emerging research materials with several potential application opportunities. As this technology continues to evolve, SWNTs may help to enable the extensible manufacturability of scaled integrated circuits into the deep nanometer regime," said Dan Herr, SRC Director of Nanomanufacturing Sciences. "Our Center for Environmentally Benign Semiconductor Manufacturing focuses on developing high performance green materials and processes, with minimal environmental safety and health impact. It is developing tools for rapidly screening new candidate materials for their hazard and manufacturing potential, early in their research life cycle."

In the UT Dallas research, the data suggests that small carbon fragments generated during the CSWNT production process may be the cause of observed toxicity, which is distinct from SWNTs. The presence of small oxidized carbon fragments in CSWNTs has been previously reported by industry researchers, but this is the first data to suggest it could be toxic.

The research is directed by SRC through the Center for Environmentally Benign Semiconductor Manufacturing, which anticipates and addresses future industry needs, with additional funding by the National Institute of Environmental Health Sciences.

For more information and details about the research, see the forthcoming manuscript entitled "Cytotoxicity Screening of Single-Walled Carbon Nanotubes: Detection and Removal of Cytotoxic Contaminants from Carboxylated Carbon Nanotubes" by Wang et al, that has been recommended for publication in Molecular Pharmaceutics.

####

About Semiconductor Research Corporation (SRC)
Celebrating 29 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

Copyright © Semiconductor Research Corporation (SRC)

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

Application of air-sensitive semiconductors in nanoelectronics: 2-D semiconductor gallium selenide in encapsulated nanoelectronic devices September 22nd, 2017

Researchers set time limit for ultrafast perovskite solar cells September 22nd, 2017

DNA triggers shape-shifting in hydrogels, opening a new way to make 'soft robots' September 21st, 2017

Physicists develop new recipes for design of fast single-photon gun Physicists develop high-speed single-photon sources for quantum computers of the future September 21st, 2017

Chip Technology

Application of air-sensitive semiconductors in nanoelectronics: 2-D semiconductor gallium selenide in encapsulated nanoelectronic devices September 22nd, 2017

Physicists develop new recipes for design of fast single-photon gun Physicists develop high-speed single-photon sources for quantum computers of the future September 21st, 2017

GLOBALFOUNDRIES Unveils Vision and Roadmap for Next-Generation 5G Applications: Technology platforms are uniquely positioned to enable a new era of ‘connected intelligence’ with the transition to 5G September 20th, 2017

GLOBALFOUNDRIES Delivers Custom 14nm FinFET Technology for IBM Systems: Jointly developed 14HP process is world’s only technology that leverages both FinFET and SOI September 20th, 2017

Nanotubes/Buckyballs/Fullerenes/Nanorods

How to draw electricity from the bloodstream: A one-dimensional fluidic nanogenerator with a high power-conversion efficiency September 11th, 2017

Silk could improve sensitivity, flexibility of wearable body sensors August 20th, 2017

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries July 26th, 2017

Killing cancer in the heat of the moment: A new method efficiently transfers genes into cells, then activates them with light. This could lead to gene therapies for cancers July 9th, 2017

Announcements

Application of air-sensitive semiconductors in nanoelectronics: 2-D semiconductor gallium selenide in encapsulated nanoelectronic devices September 22nd, 2017

Researchers set time limit for ultrafast perovskite solar cells September 22nd, 2017

DNA triggers shape-shifting in hydrogels, opening a new way to make 'soft robots' September 21st, 2017

Physicists develop new recipes for design of fast single-photon gun Physicists develop high-speed single-photon sources for quantum computers of the future September 21st, 2017

Environment

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

High-tech electronics made from autumn leaves: New process converts biomass waste into useful electronic devices August 30th, 2017

Nanoparticles pollution rises 30 percent when flex-fuel cars switch from bio to fossil: Study carried out in São Paulo, home to the world's largest flex fuel urban fleet, shows increase of ultrafine particulate matter when ethanol prices rose and consumption fell August 28th, 2017

A more complete picture of the nano world August 24th, 2017

Alliances/Trade associations/Partnerships/Distributorships

GLOBALFOUNDRIES and Soitec Enter Into Long-term Supply Agreement on FD-SOI Wafers: Strategic milestone to help guarantee a secure, high-volume supply of FD-SOI technology September 20th, 2017

GLOBALFOUNDRIES Unveils Vision and Roadmap for Next-Generation 5G Applications: Technology platforms are uniquely positioned to enable a new era of ‘connected intelligence’ with the transition to 5G September 20th, 2017

Leti and Partners in PiezoMAT Project Develop New Fingerprint Technology for Highly Reliable Security and ID Applications: Ultra-high Resolution Pressure Sensing Uses Matrices of Vertical Piezoelectric Nanowire To Reconstruct the Smallest Features of Human Fingerprints September 5th, 2017

Phenom-World selects Deben to supply a tensile stage as an accessory to their range of desktop SEMs August 29th, 2017

Research partnerships

GLOBALFOUNDRIES Delivers Custom 14nm FinFET Technology for IBM Systems: Jointly developed 14HP process is world’s only technology that leverages both FinFET and SOI September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New insights into nanocrystal growth in liquid: Understanding process that creates complex crystals important for energy applications September 14th, 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