Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Imaging methodology reveals nano details not seen before: Understanding nanoparticles at atomic scale in 3 dimensions could improve materials

This is a graphic representation of a 3-D atomic resolution screw dislocation in a platinum nanoparticle.

Credit: Chien-Chun Chen and I-Sheng Chou, UCLA
This is a graphic representation of a 3-D atomic resolution screw dislocation in a platinum nanoparticle.

Credit: Chien-Chun Chen and I-Sheng Chou, UCLA

Abstract:
A team of scientists from the University of California, Los Angeles (UCLA) and Northwestern University has produced 3-D images and videos of a tiny platinum nanoparticle at atomic resolution that reveal new details of defects in nanomaterials that have not been seen before.

Imaging methodology reveals nano details not seen before: Understanding nanoparticles at atomic scale in 3 dimensions could improve materials

Chicago, IL | Posted on March 28th, 2013

Prior to this work, scientists only had flat, two-dimensional images with which to view the arrangement of atoms. The new imaging methodology developed at UCLA and Northwestern will enable researchers to learn more about a material and its properties by viewing atoms from different angles and seeing how they are arranged in three dimensions.

The study will be published March 27 by the journal Nature.

The authors describe being able to see how the atoms of a platinum nanoparticle -- only 10 namometers in diameter -- are arranged in three dimensions. They also identify how the atoms are arranged around defects in the platinum nanoparticle.

Similar to how CT scans of the brain and body are done in a hospital, the scientists took images of a platinum nanoparticle from many different directions and then pieced the images together using a new method that improved the quality of the images.

This novel method is a combination of three techniques: scanning transmission electron microscopy, equally sloped tomography (EST) and three-dimensional Fourier filtering. Compared to conventional CT, the combined method produces much higher quality 3-D images and allows the direct visualization of atoms inside the platinum nanoparticle in three dimensions.

"Visualizing the arrangement of atoms in materials has played an important role in the evolution of modern science and technology," said Jianwei (John) Miao, who led the work. He is a professor of physics and astronomy at UCLA and a researcher with the California NanoSystems Institute at UCLA.

"Our method allows the 3-D imaging of the local structures in materials at atomic resolution, and it is expected to find application in materials sciences, nanoscience, solid state physics and chemistry," he said.

"It turns out that there are details we can only see when we can look at materials in three dimensions," said co-author Laurence D. Marks, a professor of materials science and engineering at Northwestern's McCormick School of Engineering and Applied Science.

"We have had suspicions for a long time that there was more going on than we could see from the flat images we had," Marks said. "This work is the first demonstration that this is true at the atomic scale."

Nanotechnology expert Pulickel M. Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering at Rice University complimented the research.

"This is the first instance where the three-dimensional structure of dislocations in nanoparticles has been directly revealed at atomic resolution," Ajayan said. "The elegant work demonstrates the power of electron tomography and leads to possibilities of directly correlating the structure of nanoparticles to properties, all in full 3-D view."

Defects can influence many properties of materials, and a technique for visualizing these structures at atomic resolution could lead to new insights beneficial to researchers in a wide range of fields.

"Much of what we know about how materials work, whether it is a catalyst in an automobile exhaust system or the display on a smartphone, has come from electron microscope images of how the atoms are arranged," Marks said. "This new imaging method will open up the atomic world of nanoparticles."

The experimental images were acquired at the Electron Imaging Center for NanoMachines of California NanoSystems Institute. The work at UCLA was supported by UC Discovery/TomoSoft Technologies (IT107-10166). The work at Northwestern University was supported by the Materials Research Center, which is funded by the National Science Foundation.

####

For more information, please click here

Contacts:
Megan Fellman

847-491-3115

Copyright © Northwestern 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 Links

The paper is titled "Three-dimensional imaging of dislocations in a nanoparticle at atomic resolution." In addition to Miao and Marks, other authors of the paper, all from UCLA, are co-first authors Chien-Chun Chen and Chun Zhu and co-authors Edward R. White, Chin-Yi Chiu, Mary Scott, Chris Regan and Yu Huang:

Related News Press

News and information

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Throwing new light on printed organic solar cells December 1st, 2016

Imaging

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Controlled electron pulses November 30th, 2016

Govt.-Legislation/Regulation/Funding/Policy

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Quantum obstacle course changes material from superconductor to insulator December 1st, 2016

Throwing new light on printed organic solar cells December 1st, 2016

Discoveries

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Announcements

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Novel Electrode Structure Provides New Promise for Lithium-Sulfur Batteries December 3rd, 2016

Research Study: MetaSOLTM Shatters Solar Panel Efficiency Forecasts with Innovative New Coating: Coating Provides 1.2 Percent Absolute Enhancement to Triple Junction Solar Cells December 2nd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

UTSA study describes new minimally invasive device to treat cancer and other illnesses: Medicine diffusion capsule could locally treat multiple ailments and diseases over several weeks December 3rd, 2016

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Quantum obstacle course changes material from superconductor to insulator December 1st, 2016

Throwing new light on printed organic solar cells December 1st, 2016

Tools

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Controlled electron pulses November 30th, 2016

Scientists shrink electron gun to matchbox size: Terahertz technology has the potential to enable new applications November 25th, 2016

News from Quorum: The Agricultural Research Service of the USDA uses a Quorum Cryo-SEM preparation system for the study of mites, ticks and other soft bodied organisms November 22nd, 2016

Research partnerships

Deep insights from surface reactions: Researchers use Stampede supercomputer to study new chemical sensing methods, desalination and bacterial energy production December 2nd, 2016

Quantum obstacle course changes material from superconductor to insulator December 1st, 2016

Novel silicon etching technique crafts 3-D gradient refractive index micro-optics November 28th, 2016

Single photon converter -- a key component of quantum internet November 28th, 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