Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Carnegie Mellon's Nadine Aubry, Colleague Pushpendra Singh Work to Find Method for Improved Self-Assembly of Nanoparticles

Abstract:
Carnegie Mellon University's Nadine Aubry and colleague Pushpendra Singh of the New Jersey Institute of Technology (NJIT) are leading a research team to develop a manufacturing strategy that could improve technologies used in tissue engineering and information technology.

Carnegie Mellon's Nadine Aubry, Colleague Pushpendra Singh Work to Find Method for Improved Self-Assembly of Nanoparticles

PITTSBURGH, PA | Posted on April 7th, 2008

Aubry, head of Carnegie Mellon's Mechanical Engineering Department, and Singh, an engineering professor at NJIT, have developed a new way of herding nano/micro-particles into highly ordered two-dimensional lattices (monolayers) with adjustable spacing between the particles.

The team's research, reported last month in the Proceedings of the National Academy of Sciences USA journal (pnas.org/egi/content/full/105/10/3695), shows how the use of electric fields and fluid- fluid interfaces can be judiciously used to develop new materials with special properties to increase the efficiency of drug delivery patches, solar cells and the next generation of high- performance computing.

"This new manufacturing strategy could revolutionize the way we design two-dimensional nanomaterials with adaptable microscopic structures and desired properties," said Aubry, who was recently named a fellow of the American Association for the Advancement of Science (AAAS) for her outstanding contributions to the field of fluid dynamics.

The research team found they could control the particle distribution, particularly uncharged particles, at a fluid-fluid interface by applying an electric field. Without an electric field, particles self assemble. But they self assemble under capillary action, which make particles attract one another at the free-surface of a liquid. This is the same action we experience when our cereal flakes regroup at the surface of a bowl of milk.

This self-assembly via capillary action has serious flaws. Some of those flaws include an inability to manipulate small-sized particles and adjust the porosity of the resulting material. There are also inherent defects in the particle patterns.

"What is fascinating, is that the presence of an electric field can remedy all these deficiencies," Aubry said. "The key is that when we apply the electric field, we can expand or shrink the lattice, and we can do it dynamically. The explanation is all in the subtle interplay between the forces - both electrostatic and hydrodynamic - acting on the particles."

The research team shows that their new technique creates forces capable of assembling micron-sized particles and theoretically predicts that the method should apply to nanoparticles as well.

"We are extremely excited about the new self-assembly method because it offers flexibility, precision and simplicity," Aubry said.

####

About Carnegie Mellon University
Carnegie Mellon is a private research university with a distinctive mix of programs in engineering, computer science, robotics, business, public policy, fine arts and the humanities. More than 10,000 undergraduate and graduate students receive an education characterized by its focus on creating and implementing solutions for real problems, interdisciplinary collaboration and innovation. A small student- to-faculty ratio provides an opportunity for close interaction between the students and professors. While technology is pervasive on its 144-acre Pittsburgh campus, Carnegie Mellon is also distinctive among leading research universities for the world-renowned programs in its College of Fine Arts. A global university, Carnegie Mellon has campuses in Silicon Valley, Calif., and Qatar, and programs in Asia, Australia and Europe.

For more information, please click here

Contacts:
Chriss Swaney
CMU Media Relations
412-268-5776

Copyright © Carnegie Mellon University

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

National Science Foundation Selects SUNY Poly CNSE for Expanded $2.1M Northeast Advanced Technological Education Center: NSF Center Locates to NanoCollege in Support of Flourishing Tech Industry in NYS September 1st, 2015

Hot electrons point the way to perfect light absorption: Physicists study how to achieve perfect absorption of light with the help of rough ultrathin films September 1st, 2015

Using DNA origami to build nanodevices of the future September 1st, 2015

Nanotech could rid cattle of ticks, with less collateral damage September 1st, 2015

Self Assembly

Using DNA origami to build nanodevices of the future September 1st, 2015

Louisiana Tech University researchers discover synthesis of a new nanomaterial: Interdisciplinary team creates biocomposite for first time using physiological conditions August 24th, 2015

Novel nanostructures for efficient long-range energy transport August 21st, 2015

Biophysics: Formation of swarms in nanosystems August 18th, 2015

Nanomedicine

Using DNA origami to build nanodevices of the future September 1st, 2015

Efficiency of Nanodrug Containing Antibiotics in Treatment of Infectious Diseases Evaluated August 31st, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Iranian Scientists Use Artemisia Annua Plant to Produce Breast Cancer Drugs August 29th, 2015

Announcements

Waste coffee used as fuel storage: Scientists have developed a simple process to treat waste coffee grounds to allow them to store methane September 2nd, 2015

Hot electrons point the way to perfect light absorption: Physicists study how to achieve perfect absorption of light with the help of rough ultrathin films September 1st, 2015

Using DNA origami to build nanodevices of the future September 1st, 2015

Nanotech could rid cattle of ticks, with less collateral damage September 1st, 2015

Alliances/Trade associations/Partnerships/Distributorships

National Space Society Welcomes Janet Ivey As New NSS Governor: Janet Ivey of Janet's Planet is NOW IN ORBIT as a member of the Board of Governors of the National Space Society August 27th, 2015

National Space Society Welcomes Geoff Notkin As New NSS Governor August 26th, 2015

XEI Scientific appoints EM Resolutions as Distributor for the UK & Irish markets August 11th, 2015

Omni Nano and Time Warner Cable Partner to Provide Nanotechnology Education to the Boys & Girls Clubs of Los Angeles: A $10,000 Donation to Benefit Youth of Los Angeles County's Boys & Girls Clubs August 4th, 2015

Research partnerships

Sustainable nanotechnology center September 1st, 2015

$200K Awarded to Develop In Vitro Lung Test for Toxicity of Inhaled Nanomaterials: In Vitro Lung Test Designed to Protect Human Health and Replace Animal Testing September 1st, 2015

Hot electrons point the way to perfect light absorption: Physicists study how to achieve perfect absorption of light with the help of rough ultrathin films September 1st, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

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







Car Brands
Buy website traffic