Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Physicist Seeks Nanomaterials with Rationally Designed Properties

Doctoral student Benjamin Gray, left, and Jak Chakhalian in the laboratory with a unique state-of-the-art piece of equipment built last summer to fabricate atomic layers of complex oxides.
Doctoral student Benjamin Gray, left, and Jak Chakhalian in the laboratory with a unique state-of-the-art piece of equipment built last summer to fabricate atomic layers of complex oxides.

Abstract:
A University of Arkansas physicist has received the largest award granted to an individual researcher from the Army Research Laboratory to search for a novel class of nanomaterials with rationally designed properties.

Physicist Seeks Nanomaterials with Rationally Designed Properties

Fayetteville, AR | Posted on April 21st, 2011

Physicist Jak Chakhalian seeks to create a new class of materials - so-called topological insulators combined with magnetic and superconductivity properties within just a few atomic layers. From the practical perspective, having all of these properties in one material could lead to building never-before realized topological quantum computers, which could be used to break complex encryption codes and compute things beyond the power of today's supercomputers.

"If you have that, it will revolutionize the way we think about electrons moving in conventional insulators and metals even at the nanoscale," Chakhalian said. He has funding from the Army Research Laboratory of $1.2 million over five years.

Recently Chakhalian, associate professor of physics in the J. William Fulbright College of Arts and Sciences, and colleagues found a novel way to "look" at atomic orbitals and found that they change substantially at the interface between a ferromagnet and a high-temperature superconductor. This finding opens up a new way of designing nanoscale superconducting materials. It also fundamentally changes scientific convention, which suggests that only electron spin and atomic charge - not atomic orbitals - influence the properties of nanostructures. It also has profound implications for interfaces between many other complex oxide materials.

This research was cited by Science magazine as one of the top 10 research breakthroughs of 2007.
Until recently, researchers only recognized three fundamental types of materials: metals such as iron and gold, insulators and semiconductors. In 2006, theoretical physicists suggested that another completely unknown class of insulating materials might exist. This class, called topological insulators, would not conduct electricity inside the crystal but permits the perfect conduction on the surface within a single atomic layer. This happens because geometry protects the surface electrons. In 2007, scientists looked at the alloy bismuth telluride and found the properties that this theory predicted. They had discovered a new class of material.

"On the inside, bismuth telluride is an insulator, but on the surface, within one atomic layer, it's a perfect conductor," Chakhalian said. "It will conduct within the single atomic layer no matter how disordered the crystal on the inside. This is a whole new class of materials very similar to the Nobel prize-winning material, graphene, with many other interesting twists."
Chakhalian wants to create a topological insulator as a nanostructure with magnetic and superconducting properties in a few atomic layers at the interface. He admits that his goal is ambitious, but he likens the research to going to the moon in the 1960s - no one thought it could be done, but it happened.

"We need scientists to be courageous, to jump into the unknown," he said. Chakhalian will use the grant from the Army Research Laboratory to build new equipment to create and test atomically thin superlattices by combining novel materials and using the interface as a tool.

Chakhalian is a member of the University of Arkansas Institute for Nanoscience and Engineering. He holds the Charles E. and Clydene Scharlau Endowed Professorship in Chemistry.

####

For more information, please click here

Contacts:
Jak Chakhalian
associate professor of physics
J. William Fulbright College of Arts and Sciences
479-575-4313


Melissa Lutz Blouin
director of science and research communications
University Relations
479-575-5555

Copyright © Newswise

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

Dr Barbara Armbruster promoted to Worldwide Sales and Marketing Director for XEI Scientific September 27th, 2016

Fighting cancer with sticky nanoparticles September 27th, 2016

Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer September 27th, 2016

UNAM develops successful nano edible coating which increases life food September 27th, 2016

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Laboratories

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

NIST Patents Single-Photon Detector for Potential Encryption and Sensing Apps September 16th, 2016

Electron beam microscope directly writes nanoscale features in liquid with metal ink September 16th, 2016

Physics

New breed of optical soliton wave discovered September 9th, 2016

NREL discovery creates future opportunity in quantum computing: Research into perovskites looks beyond material's usage for efficient solar cells September 9th, 2016

Location matters in the self-assembly of nanoclusters: Iowa State University scientists have developed a new formulation to explain an aspect of the self-assembly of nanoclusters on surfaces that has broad applications for nanotechnology September 8th, 2016

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Govt.-Legislation/Regulation/Funding/Policy

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Tattoo therapy could ease chronic disease: Rice-made nanoparticles tested at Baylor College of Medicine may help control autoimmune diseases September 23rd, 2016

PHENOMEN is a FET-Open Research Project aiming to lay the foundations a new information technology September 19th, 2016

NIST Patents Single-Photon Detector for Potential Encryption and Sensing Apps September 16th, 2016

Chip Technology

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Mexican scientist in the Netherlands seeks to achieve data transmission ... speed of light September 20th, 2016

Towards Stable Propagation of Light in Nano-Photonic Fibers September 20th, 2016

PHENOMEN is a FET-Open Research Project aiming to lay the foundations a new information technology September 19th, 2016

Quantum Computing

NREL discovery creates future opportunity in quantum computing: Research into perovskites looks beyond material's usage for efficient solar cells September 9th, 2016

NREL Discovery Creates Future Opportunity in Quantum Computing: Research into perovskites looks beyond materialís usage for efficient solar cells September 1st, 2016

Colors from darkness: Researchers develop alternative approach to quantum computing August 31st, 2016

Diamonds and quantum information processing on the nano scale August 31st, 2016

Announcements

Dr Barbara Armbruster promoted to Worldwide Sales and Marketing Director for XEI Scientific September 27th, 2016

Fighting cancer with sticky nanoparticles September 27th, 2016

Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer September 27th, 2016

UNAM develops successful nano edible coating which increases life food September 27th, 2016

Military

Tattoo therapy could ease chronic disease: Rice-made nanoparticles tested at Baylor College of Medicine may help control autoimmune diseases September 23rd, 2016

Nano-lipid particles from edible ginger could improve drug delivery for colon cancer, study finds September 8th, 2016

3-D graphene has promise for bio applications: Rice University-led team welds nanoscale sheets to form tough, porous material September 7th, 2016

Nanodiamonds in an instant: Rice University-led team morphs nanotubes into tougher carbon for spacecraft, satellites September 6th, 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