Featured Research

from universities, journals, and other organizations

Metamaterials, quantum dots show promise for new technologies

Date:
May 24, 2012
Source:
Purdue University
Summary:
Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including advanced solar cells and quantum computing.

This graphic depicts a new "nanostructured metamaterial" - layers of silver and titanium oxide and tiny components called quantum dots - to dramatically change the properties of light. Researchers are working to perfect the metamaterials, which might be capable of ultra-efficient transmission of light, with potential applications including advanced solar cells and quantum computing.
Credit: Image courtesy of CUNY

Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including advanced solar cells and quantum computing.

The metamaterial -- layers of silver and titanium oxide and tiny components called quantum dots -- dramatically changes the properties of light. The light becomes "hyperbolic," which increases the output of light from the quantum dots.

Such materials could find applications in solar cells, light emitting diodes and quantum information processing far more powerful than today's computers.

"Altering the topology of the surface by using metamaterials provides a fundamentally new route to manipulating light," said Evgenii Narimanov, a Purdue University associate professor of electrical and computer engineering.

Findings were detailed in a research paper published April 13 in the journal Science.

Such metamaterials could make it possible to use single photons -- the tiny particles that make up light -- for switching and routing in future computers. While using photons would dramatically speed up computers and telecommunications, conventional photonic devices cannot be miniaturized because the wavelength of light is too large to fit in tiny components needed for integrated circuits.

"For example, the wavelength used for telecommunications is 1.55 microns, which is about 1,000 times too large for today's microelectronics," Narimanov said.

Nanostructured metamaterials, however, could make it possible to reduce the size of photons and the wavelength of light, allowing the creation of new types of nanophotonic devices, he said.

The work was a collaboration of researchers from Queens and City Colleges of City University of New York (CUNY), Purdue University, and University of Alberta. The experimental study was led by the CUNY team, while the theoretical work was carried out at Purdue and Alberta.

The Science paper is authored by CUNY researchers Harish N.S. Krishnamoorthy, Vinod M. Menon and Ilona Kretzschmar; University of Alberta researcher Zubin Jacob; and Narimanov. Zubin is a former Purdue doctoral student who worked with Narimanov.

The approach could help researchers develop "quantum information systems" far more powerful than today's computers. Such quantum computers would take advantage of a phenomenon described by quantum theory called "entanglement." Instead of only the states of one and zero, there are many possible "entangled quantum states" in between.

The research has been funded by the National Science Foundation and the U.S. Army Research Office.


Story Source:

The above story is based on materials provided by Purdue University. The original article was written by Emil Venere. Note: Materials may be edited for content and length.


Journal Reference:

  1. H. N. S. Krishnamoorthy, Z. Jacob, E. Narimanov, I. Kretzschmar, V. M. Menon. Topological Transitions in Metamaterials. Science, 2012; 336 (6078): 205 DOI: 10.1126/science.1219171

Cite This Page:

Purdue University. "Metamaterials, quantum dots show promise for new technologies." ScienceDaily. ScienceDaily, 24 May 2012. <www.sciencedaily.com/releases/2012/05/120524143529.htm>.
Purdue University. (2012, May 24). Metamaterials, quantum dots show promise for new technologies. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2012/05/120524143529.htm
Purdue University. "Metamaterials, quantum dots show promise for new technologies." ScienceDaily. www.sciencedaily.com/releases/2012/05/120524143529.htm (accessed September 30, 2014).

Share This



More Matter & Energy News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Argentina's Tax Evaders Detected, Hunted Down by Drones

Argentina's Tax Evaders Detected, Hunted Down by Drones

AFP (Sep. 30, 2014) Argentina doesn't only have Lionel Messi the footballer, it has now also acquired "Mesi" the drone system which monitors undeclared mansions, swimming pools and soy fields to curb tax evasion in the country. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Do Video Games Trump Brain Training For Cognitive Boosts?

Do Video Games Trump Brain Training For Cognitive Boosts?

Newsy (Sep. 29, 2014) More and more studies are showing positive benefits to playing video games, but the jury is still out on brain training programs. Video provided by Newsy
Powered by NewsLook.com
CERN Celebrates 60 Years of Science

CERN Celebrates 60 Years of Science

Reuters - Business Video Online (Sep. 29, 2014) CERN, the European Organisation for Nuclear Research, celebrates 60 years of bringing nations together through science. As Joanna Partridge reports from inside the famous science centre it's also planning to turn the Large Hadron Collider particle accelerator back on after an upgrade. Video provided by Reuters
Powered by NewsLook.com
This 'Invisibility Cloak' Is Simpler Than Most

This 'Invisibility Cloak' Is Simpler Than Most

Newsy (Sep. 28, 2014) Researchers from the University of Rochester have created a type of invisibility cloak with simple focal lenses. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins