Featured Research

from universities, journals, and other organizations

Tackling the tiniest technology to make gadgets smaller, faster and more efficient

Date:
March 4, 2014
Source:
University of Cincinnati
Summary:
Researchers are discovering how to manipulate light to one day better view the world's tiniest objects through a super-lens, as well as how to hide an object in plain sight. The research focuses on exciting collective oscillations of metal electrons called plasmons, and on directing light through nanometer-thin metal films, about a thousand times thinner than a human hair. The result could empower integrated circuits or facilitate a super-lens with seven times the strength of a standard microscope, opening further research into fields such as studying microorganisms and viruses.

University of Cincinnati researchers are discovering how to manipulate light to one day better view the world's tiniest objects through a super-lens, as well as how to hide an object in plain sight.
Credit: Image courtesy of University of Cincinnati

University of Cincinnati researchers are discovering how to manipulate light to one day better view the world's tiniest objects through a super-lens, as well as how to hide an object in plain sight.

Related Articles


Masoud Kaveh-Baghbadorani, a doctoral student in the University of Cincinnati's physics program, will present this research on March 4, at the American Physical Society Meeting in Denver.

The research focuses on exciting collective oscillations of metal electrons called plasmons, and on directing light through nanometer-thin metal films, about a thousand times thinner than a human hair. The result could empower integrated circuits or facilitate a super-lens with seven times the strength of a standard microscope, opening further research into fields such as studying microorganisms and viruses.

Other applications involve bouncing light around an object by cloaking it with a metamaterial film. Instead of the object reflecting light and thus causing it to be seen, the light manipulation can make it invisible.

Plasmonics is an emerging field, but it has its limitations due to the loss of energy in the metal layers, which dissipate the plasmon energy into heat. Kaveh-Baghbadorani's research focuses on developing hybrid metal/organic nanowires that essentially work as an energy pump to compensate for metal losses in plasmonic nanostructures.

This energy pump results from exciton radiation, an electronic excitement in the semiconductor nanowires. Kaveh-Baghbadorani explains that the exciton functions somewhat like a hydrogen atom -- negative and positive charges are bound together. The research is examining energy transfer from excitons in semiconductor nanowires to different metal materials used to cover the nanowires, as well as the effects of the thickness of covering organic layers in energy transfer.

The researchers want to know how the dynamics of excitons are affected by the use of different organic materials, and how lifetime and energy transferring processes of nanowire excitons are modified by changing the design of the nanowires or the thickness of organic spacer layers.

Kaveh-Baghbadorani's advisor, Hans-Peter Wagner, a UC associate professor of physics, is one of the co-researchers on the project. "To achieve our goal, the knowledge of exciton relaxation and energy-transfer processes in plasmonic semiconductor nanowire heterostructures is of crucial importance," says Wagner, whose lab has a growth facility to allow researchers to produce a variety of plasmonic structures. The lab also has special optical methods to measure exciton relaxation processes on a sub-picosecond time-scale.

Co-researchers on the project include Wagner; Qiang Gao, research fellow, and Chennupati Jagadish, professor of engineering, Australian National University, where the semiconductor nanowires are produced; and Gerd Duscher, professor of engineering, University of Tennessee.


Story Source:

The above story is based on materials provided by University of Cincinnati. The original article was written by Dawn Fuller. Note: Materials may be edited for content and length.


Cite This Page:

University of Cincinnati. "Tackling the tiniest technology to make gadgets smaller, faster and more efficient." ScienceDaily. ScienceDaily, 4 March 2014. <www.sciencedaily.com/releases/2014/03/140304125939.htm>.
University of Cincinnati. (2014, March 4). Tackling the tiniest technology to make gadgets smaller, faster and more efficient. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2014/03/140304125939.htm
University of Cincinnati. "Tackling the tiniest technology to make gadgets smaller, faster and more efficient." ScienceDaily. www.sciencedaily.com/releases/2014/03/140304125939.htm (accessed November 24, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Monday, November 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Car Park Solution for Flexible Green Energy

Car Park Solution for Flexible Green Energy

Reuters - Innovations Video Online (Nov. 24, 2014) A British solar power start-up says that by covering millions of existing car park spaces around the UK with flexible solar panels, the country's power problems could be solved. Suzannah Butcher reports. Video provided by Reuters
Powered by NewsLook.com
Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Newsy (Nov. 23, 2014) Microsoft has robotic security guards working at its Silicon Valley Campus. Video provided by Newsy
Powered by NewsLook.com
US Army Completes Ebola Treatment Unit

US Army Completes Ebola Treatment Unit

Reuters - US Online Video (Nov. 22, 2014) The US Army of engineers completes Ebola treatment center in Liberia. Julie Noce reports. Video provided by Reuters
Powered by NewsLook.com
Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
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