Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Disappearing gold a boon for nanolattices

Abstract:
When gold vanishes from a very important location, it usually means trouble. At the nanoscale, however, it could provide more knowledge about certain types of materials. A recent discovery that enables scientists to replace gold nanoparticles with dummy "spacers" has allowed scientists to create materials with never-before-seen structures, which may lead to new properties.

Disappearing gold a boon for nanolattices

Argonne, IL | Posted on January 29th, 2012

In a new study, researchers led by Professor Chad A. Mirkin from Northwestern University used the high-intensity X-rays provided at beamline 5-ID of the Advanced Photon Source (APS) at the U.S. Department of Energy's Argonne National Laboratory to look at "nanoparticle superlattices"—well-ordered arrangements of tiny nanoscale spheres that can be manipulated to take on a number of different properties.

Superlattices have several characteristics that make them especially appealing to materials scientists, said Northwestern graduate student Evelyn Auyeung, one of the lead authors of the study. "Superlattices are defined by the fact that they maintain a well-organized structure over relatively long distances," she said. "The advantage to an ordered structure is that it gives you a better opportunity to tune or program the characteristics of the material."

In previous experiments conducted at Argonne, scientists examined the effect of using DNA as a kind of glue to reinforce the lattice structure. It had been shown that DNA is a versatile tool that directs nanoparticles into a variety of one-, two-, and three-dimensional superlattices, where the lattice parameter and symmetries depended on the length of the DNA, as well as the size and shapes of the particles used.

By incorporating the spacer particle—one that had no inorganic core—in place of the gold nanoparticle, the researchers were able to transform the structure of a body-centered cubic lattice to a simple cubic lattice. They extended this technique to other binary lattices and were able to synthesize many exotic lattices, including one which has no natural or synthetic equivalent for any known material. "Using these dummy particles gives us access to an entirely new design space," Auyeung said. "The next step is to study the kind of properties that these lattices have thanks to the different arrangement of the nanoparticles. If we can fully investigate this design space, we might be able to access some new emergent properties from these materials."

The work was supported by the U.S. Department of Energy's Basic Energy Sciences program.

The Advanced Photon Source at Argonne National Laboratory is one of four synchrotron radiation light sources supported by the U.S. Department of Energy's Office of Science. The APS is the source of the Western Hemisphere's brightest x-ray beams for research in virtually every scientific discipline. More than 3,500 researchers representing universities, industry, and academic institutions from every U.S. state visit the APS each year to carry out both applied and basic research in support of the BES mission.

The results of the research were published in the January issue of Nature Nanotechnology.

By Jared Sagoff

####

About Argonne National Laboratory

Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation's first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America's scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy's Office of Science.

DOE's Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.

For more information, please click here

Contacts:
Jared Sagoff
630/252-5549

Copyright © Argonne National Laboratory

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 Links

Follow Argonne on Twitter at:

Related News Press

News and information

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

New exotic phenomena seen in photonic crystals: Researchers observe, for the first time, topological effects unique to an “open” system January 12th, 2018

Imaging

The nanoscopic structure that locks up our genes January 16th, 2018

Silver nanoparticles take spectroscopy to new dimension: A new way of organizing nanostructures has boosted Raman signals by a hundred thousand times to better identify and characterize different molecules January 2nd, 2018

Laboratories

Laboratory Management Web Application Goes Nationwide January 9th, 2018

NRL improves optical efficiency in nanophotonic devices January 4th, 2018

Tweaking quantum dots powers-up double-pane solar windows: Engineered quantum dots could bring down the cost of solar electricity January 2nd, 2018

Govt.-Legislation/Regulation/Funding/Policy

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

New exotic phenomena seen in photonic crystals: Researchers observe, for the first time, topological effects unique to an “open” system January 12th, 2018

'Decorated' stem cells could offer targeted heart repair January 11th, 2018

Discoveries

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

Materials/Metamaterials

Nanotube fibers in a jiffy: Rice University lab makes short nanotube samples by hand to dramatically cut production time January 11th, 2018

New oxide and semiconductor combination builds new device potential: Researchers integrated oxide two-dimensional electron gases with gallium arsenide and paved the way toward new opto-electrical devices January 10th, 2018

Ultrafine fibers have exceptional strength: New technique developed at MIT could produce strong, resilient nanofibers for many applications January 5th, 2018

NRL improves optical efficiency in nanophotonic devices January 4th, 2018

Announcements

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

Research partnerships

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

New era in high field superconducting magnets – opening new frontiers in science, nanotechnology and materials discovery January 9th, 2018

Touchy nanotubes work better when clean: Rice, Swansea scientists show that decontaminating nanotubes can simplify nanoscale devices January 4th, 2018

Study resolves controversy about electron structure of defects in graphene December 21st, 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