Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > ‘Ubiquitous element strategy’ for overcoming potential deficiencies of rare elements in the synthesis of industrially important electronic, thermionic, and structural materials

Active functionalities of 12CaO•7Al2O3 (C12A7) realized by replacing O2- ion in the crystallographic subnanometer-sized cages by abundant-anion species.
Active functionalities of 12CaO•7Al2O3 (C12A7) realized by replacing O2- ion in the crystallographic subnanometer-sized cages by abundant-anion species.

Abstract:
Japanese scientists report on a unique ‘ubiquitous element strategy' for synthesizing industrially important electronic, thermionic, and structural materials using naturally abundant elements. This strategy aims to overcome the ‘rare-element crisis' that was triggered by increasing demand for such elements as lithium, used in batteries, and dysprosium for Ne-Fe-B permanent magnets.

‘Ubiquitous element strategy’ for overcoming potential deficiencies of rare elements in the synthesis of industrially important electronic, thermionic, and structural materials

Tsukuba, Japan | Posted on July 5th, 2011

In the review article published in the journal Science and Technology of Advanced Materials [dx.doi.org/10.1088/1468-6996/12/3/034303] scientists from Tokyo Institute of Technology describe their research on the synthesis and applications of oxide materials based on the 20-30 most abundant elements including Si, Al, Ca, Na, and Mg. The key to this strategy is an in-depth knowledge of the role of elements in the physical properties of materials—knowledge available from research on the science and technology of nanometer-sized materials.

Research covered in this paper includes:

The conversion of ceramic 12CaO7Al2O3 (C12A7)—interconnected, positively charged nano-cages—into a chemically and thermally stable transparent conductor which undergoes a metal-superconductor transition at 0.2 K. C12A7 has a wide bandgap of >7 eV and a low work function of 2.4 eV. The authors describe the synthesis, properties, and applications—light-emitting, electron field emitters, and nonvolatile memories—of C12A7 based on their own research.

The generation of ionized oxygen is important in the electronics industry for applications including the production of silicon diode layers on semiconductors. Conventional methods rely on the catalytic action of Pt—a metal in scarce supply. Here, the researchers describe the production of large quantities of atomic oxygen by incandescent heating of 2-mm-diameter tube of yttria-doped zirconia—a solid oxide electrolyte that conducts oxygen ions. This method of generating atomic oxygen is more efficient, highly selective in the types of ions generated, and enables lower temperature oxidation of silicon compared with thermal oxidation.

In another example of the ‘ubiquitous element strategy' the authors describe the effect of phase transitions on the controlled fracture in mullite ceramics (3Al2O3•2SiO2), which is crucial for impact-resistant armor and bumper shields for spacecraft. The researchers found that mullite exhibited superior protection as Whipple bumper shields compared to conventional aluminum alloys "tested for the impact by an aluminum alloy flyer at 5.5 km/s".

Other materials discussed include SrTiO3/TiO2, exhibiting a fivefold higher Seebeck effect compared with bulk material; the pulsed laser deposition of flat MgO(111) films on Al2O3(0001) substrates and of atomically flat MgO(111) films on YSZ(111) substrates with NiO(111) buffer layers.

This up to date and highly informative review includes 34 figures and 115 references.


Related information
[1] Hideo Hosono1,2,3, Katsuro Hayashi2, Toshio Kamiya2,3, Toshiyuki Atou2 and Tomofumi Susaki2,4, "New functionalities in abundant element oxides: ubiquitous element strategy",
Science and Technology of Advanced Materials 12 (2011) p. 034303. [dx.doi.org/10.1088/1468-6996/12/3/034303]

1 Frontier Research Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori,
Yokohama 226-8503, Japan

2 Secure Materials Center, Materials and Structures Laboratory, Tokyo Institute of
Technology, Nagatsuta, Midori, Yokohama 226-8503, Japan

3 Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta, Midori,
Yokohama 226-8503, Japan

4 Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

####

For more information, please click here

Contacts:
Mikiko Tanifuji
National Institute for Materials Science, Tsukuba, Japan
Email:
Tel. +81-(0)29-859-2494

Copyright © National Institute for Materials Science,

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

A copy of the research paper is available from:

Related News Press

News and information

Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016

Leti and Taiwanese Tech Organizations Sponsoring Workshop in Taipei on MEMS, IoT, Smart Lighting Applications, System Reliability & Security September 28th, 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

Chemistry

Chains of nanogold – forged with atomic precision September 23rd, 2016

Carbon-coated iron catalyst structure could lead to more-active fuel cells September 15th, 2016

Researchers build world's largest database of crystal surfaces and shapes September 14th, 2016

On-surface chemistry leads to novel products: On-surface chemical Reactions can lead to novel chemical compounds not yet synthesized by solution chemistry. September 13th, 2016

Chip Technology

Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016

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

Discoveries

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

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

Announcements

Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016

Leti and Taiwanese Tech Organizations Sponsoring Workshop in Taipei on MEMS, IoT, Smart Lighting Applications, System Reliability & Security September 28th, 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

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016

Semiconducting inorganic double helix: New flexible semiconductor for electronics, solar technology and photo catalysis September 15th, 2016

Researchers design solids that control heat with spinning superatoms: Carnegie Mellon University and Columbia University collaborators discover the cause of vastly different thermal conductivities in superatomic structural analogues September 8th, 2016

Fish 'biowaste' converted to piezoelectric energy harvesters: Jadavpur University researchers in India devised a way to recycle fish byproducts into an energy harvester for self-powered electronics September 8th, 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