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

Imaging

Designing ultrasound tools with Lego-like proteins August 29th, 2016

Forces of nature: Interview with microscopy innovators Gerd Binnig and Christoph Gerber August 26th, 2016

News and information

Designing ultrasound tools with Lego-like proteins August 29th, 2016

A nanoscale wireless communication system via plasmonic antennas: Greater control affords 'in-plane' transmission of waves at or near visible light August 27th, 2016

Forces of nature: Interview with microscopy innovators Gerd Binnig and Christoph Gerber August 26th, 2016

Laboratories

A new way to display the 3-D structure of molecules: Metal-organic frameworks provide a new platform for solving the structure of hard-to-study samples August 21st, 2016

Scientists uncover origin of high-temperature superconductivity in copper-oxide compound: Analysis of thousands of samples reveals that the compound becomes superconducting at an unusually high temperature because local electron pairs form a 'superfluid' that flows without resist August 19th, 2016

Let's roll: Material for polymer solar cells may lend itself to large-area processing: 'Sweet spot' for mass-producing polymer solar cells may be far larger than dictated by the conventional wisdom August 12th, 2016

NREL technique leads to improved perovskite solar cells August 11th, 2016

Govt.-Legislation/Regulation/Funding/Policy

Analog DNA circuit does math in a test tube: DNA computers could one day be programmed to diagnose and treat disease August 25th, 2016

New approach to determining how atoms are arranged in materials August 25th, 2016

Johns Hopkins scientists track metabolic pathways to find drug combination for pancreatic cancer August 25th, 2016

New electrical energy storage material shows its power: Nanomaterial combines attributes of both batteries and supercapacitors August 25th, 2016

Discoveries

Designing ultrasound tools with Lego-like proteins August 29th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

New electrical energy storage material shows its power: Nanomaterial combines attributes of both batteries and supercapacitors August 25th, 2016

Materials/Metamaterials

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

Unraveling the crystal structure of a -70° Celsius superconductor, a world first: Significant advancement in the realization of room-temperature superconductors August 25th, 2016

Semblant to Present at China Mobile Manufacturing Forum 2016 August 25th, 2016

Announcements

Designing ultrasound tools with Lego-like proteins August 29th, 2016

A nanoscale wireless communication system via plasmonic antennas: Greater control affords 'in-plane' transmission of waves at or near visible light August 27th, 2016

Forces of nature: Interview with microscopy innovators Gerd Binnig and Christoph Gerber August 26th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Research partnerships

New electrical energy storage material shows its power: Nanomaterial combines attributes of both batteries and supercapacitors August 25th, 2016

New theory could lead to new generation of energy friendly optoelectronics: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics August 23rd, 2016

A new way to display the 3-D structure of molecules: Metal-organic frameworks provide a new platform for solving the structure of hard-to-study samples August 21st, 2016

Researchers watch catalysts at work August 19th, 2016

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