Featured Research

from universities, journals, and other organizations

Herding Nano-particles Into Precise Lattices Could Be Basis For Improved Tissue Engineering

Date:
April 8, 2008
Source:
Carnegie Mellon University
Summary:
Researchers are developing a manufacturing strategy that could improve technologies used in tissue engineering and information technology.

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.

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, 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.


Story Source:

The above story is based on materials provided by Carnegie Mellon University. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Mellon University. "Herding Nano-particles Into Precise Lattices Could Be Basis For Improved Tissue Engineering." ScienceDaily. ScienceDaily, 8 April 2008. <www.sciencedaily.com/releases/2008/04/080407132129.htm>.
Carnegie Mellon University. (2008, April 8). Herding Nano-particles Into Precise Lattices Could Be Basis For Improved Tissue Engineering. ScienceDaily. Retrieved October 1, 2014 from www.sciencedaily.com/releases/2008/04/080407132129.htm
Carnegie Mellon University. "Herding Nano-particles Into Precise Lattices Could Be Basis For Improved Tissue Engineering." ScienceDaily. www.sciencedaily.com/releases/2008/04/080407132129.htm (accessed October 1, 2014).

Share This



More Matter & Energy News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Japan Looks To Faster Future As Bullet Train Turns 50

Japan Looks To Faster Future As Bullet Train Turns 50

Newsy (Oct. 1, 2014) Japan's bullet train turns 50 Wednesday. Here's a look at how it's changed over half a century — and the changes it's inspired globally. Video provided by Newsy
Powered by NewsLook.com
US Police Put Body Cameras to the Test

US Police Put Body Cameras to the Test

AFP (Oct. 1, 2014) Police body cameras are gradually being rolled out across the US, with interest surging after the fatal police shooting in August of an unarmed black teenager. Duration: 02:18 Video provided by AFP
Powered by NewsLook.com
Raw: Japan Celebrates 'bullet Train' Anniversary

Raw: Japan Celebrates 'bullet Train' Anniversary

AP (Oct. 1, 2014) A ceremony marking 50 years since Japan launched its Shinkansen bullet train was held on Wednesday in Tokyo. The latest model can travel from Tokyo to Osaka, a distance of 319 miles, in two hours and 25 minutes. (Oct. 1) Video provided by AP
Powered by NewsLook.com
Robotic Hair Restoration

Robotic Hair Restoration

Ivanhoe (Oct. 1, 2014) A new robotic procedure is changing the way we transplant hair. The ARTAS robot leaves no linear scarring and provides more natural results. Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins