Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Tungsten photonic crystals may answer the need for more power in advanced electrical applications

25.08.2003


Technical Insights’ High Tech Materials Alert



Scientists have discovered that when lattice tungsten filaments are heated, they are capable of emitting greater energy than solid tungsten filaments.

"Because of this significant advance, lattice tungsten filaments will likely meet the increasing power requirements of high-tech electrical systems, such as those in hybrid electric cars, sophisticated boats, engines, and industrial waste heat-driven electrical generators," says Technical Insights Analyst Aninditta Savitry.


Tungsten lattice emissions transfer more energy than solid tungsten filaments into certain bands of near-infrared wavelengths. The energy is used by photovoltaic cells to convert light into electricity. "The next generation of lighting may arrive if the results that are now possible at 1.5 microns can be extended to the entire visible spectrum," says Savitry.

Tungsten lattices have crystalline regularity and are capable of bending light without losing any energy. Computer chip production technology has enabled mass fabrication of these sub-micron-featured lattices. Precise channels of the crystal lattice have been constructed, forming a home for particular wavebands as they travel. The innovation here is to use the channels not to bend light, but to permit input energy to exit only with the desired frequency bands, and thereby enhance output.

Existing receivers absorb only limited bands of incoming energy across the wide spectrum of infrared radiation. Photonic lattices, when placed between a solar, dynamo, or fire generator and receiver, can be engineered to absorb energy.

Tungsten lattices have exhibited a conversion efficiency of 34 percent and electrical power density of about 14 W/cm2 when heated to 1,250 degree centigrade in a vacuum.

New analysis by Technical Insights, a business unit of Frost & Sullivan (http://www.ti.frost.com), featured in High-Tech Materials Alert, presents insights into the discovery of tungsten photonic crystals and their capabilities in providing higher power than competing materials.

Frost & Sullivan is a global leader in strategic growth consulting. Acquired by Frost & Sullivan, Technical Insights is an international technology analysis business that produces a variety of technical news alerts, newsletters, and reports. This ongoing growth opportunity analysis of tungsten photonic crystals is covered in High Tech Materials Alert, a Technical Insights subscription service, and in Advanced Materials Update, a Frost & Sullivan Technical Insights technology report. Technical Insights and Frost & Sullivan also offer custom growth consulting to a variety of national and international companies. Executive summaries and interviews are available to the press.


###
High Tech Materials Alert

Contact:
USA:
Julia Paulson
P: 210-247-3870
F: 210-348-1003
E: jpaulson@frost.com

APAC:
Pramila Gurtoo
DID: 603-6204-5811
Gen: 603-6204-5800
Fax: 603-6201-7402
E: pgurtoo@frost.com

Julia Paulson | EurekAlert!
Further information:
http://www.ti.frost.com/
http://www.frost.com/
http://www.Technical-Insights.frost.com

More articles from Power and Electrical Engineering:

nachricht A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes
20.07.2018 | Science China Press

nachricht Future electronic components to be printed like newspapers
20.07.2018 | Purdue University

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

20.07.2018 | Power and Electrical Engineering

Reversing cause and effect is no trouble for quantum computers

20.07.2018 | Information Technology

Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern

20.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>