Navigation Links
Duke researchers coax bright white light from unexpected source
Date:12/18/2008

e In-house Laboratory Independent Research program because of its potential advantages as an energy efficient and safe illumination source.

"One of the objectives is to give soldiers efficient lighting that doesn't run their batteries down," Everitt said. "They need efficiency, brightness, longevity and ruggedness, and this helps with all of those things."

Existing commercial LEDs are already rugged enough to be used in bumper-mounted brake lights, Everitt said.

"They are good enough for decoration and for use in traffic lights, but they don't make good reading lights because they are not of a white color that our eyes use best," Liu said. White LEDs on the market now are costly, short-lived and not truly white, the researchers added.

A compound that can be used on faces or babies' bottoms also has major safety advantages over fluorescent bulbs, which happen to contain toxic mercury. "If a fluorescent bulb gets broken in the course of battle, it exposes soldiers to that mercury in addition to its shattered glass," Everitt said.

"I think the biggest payoff for the general public will ultimately be in future energy crises we're certainly going to face," Everitt added. "If we can have more efficient lighting it will reduce our energy requirements."

Scientists have long known that zinc oxide can itself serve as a solid state ultraviolet light source. They have also known that adding sulfur allows it to emit some white light. But Liu, Everitt and Foreman are investigating how nanostructuring and doping improves its performance.

The introduced sulfur is thought to boost wavelength conversions from ultraviolet to visible wavelengths by serving as an "impurity" that changes the chemistry and physics of the zinc oxide in ways the Duke researchers are still probing.

Most scientists consider such impurities "defects" that interfere with zinc oxide's ability to produce a stronger ultraviolet light, they
'/>"/>

Contact: Monte Basgall
monte.basgall@duke.edu
919-681-8057
Duke University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Researchers improve ability to write and store information on electronic devices
2. Long-awaited international ethical guidelines for biobank researchers
3. CU researchers shed light on light-emitting nanodevice
4. Stevens researchers provide new information about mass spectrometry
5. Researchers measure carbon nanotube interaction
6. Researchers underscore limitations of genetic ancestry tests
7. ASU researchers improve memory devices using nanotech
8. UD researchers race ahead with latest spintronics achievement
9. Researchers outline structure of largest nonvirus particle ever crystallized
10. Ames Laboratory researchers solve fuel-cell membrane structure conundrum
11. Researchers use magnetism to target cells to animal arteries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
(Date:1/14/2014)... NY (PRWEB) January 14, 2014 EquitiesIQ, ... Alliqua, Inc. (OTCQB: ALQA). Alliqua is an emerging biomedical ... serve the wound care market. , Free report download: ... restructured with a seasoned management team and Board, which ...
(Date:1/14/2014)... 2014 In recent years, growing suspicion ... in product development and promotion has led to unprecedented ... fueled by concerns about the insidious impact of commercialization ... spectacular fines to the world’s biggest pharmas for illegal ...
(Date:1/14/2014)... (PRWEB) January 13, 2014 Bob Hainsey, ... more than 20 years in the industry, has joined ... . Hainsey will serve as the society’s Science and ... Hainsey join SPIE as our Technology Strategist, further strengthening ...
Breaking Biology Technology:Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2
... Madison, Wis. - Stratatech Corp. has received ... Institute on Aging , a division of the National ... gene therapy products for the use in the treatment of ... stasis and pressure ulcers. , ,It is estimated that in ...
... Brookfield, Wis.-based Fiserv, Inc. and CUNA ... delivery and presentation of CUNA Mutual's payment ... with the technology solutions offered by Fiserv ... CUNA Mutual's payment protection products, which include credit life, ...
... Wis. -- We take it for granted the lights ... and ice storms can temporarily bring down power lines and ... of us believe affordable power will always be there - ... ,If only it was as easy as flipping a switch. ...
Cached Biology Technology:Keeping Wisconsin supplied with energy won't get any easier 2Keeping Wisconsin supplied with energy won't get any easier 3
(Date:4/17/2014)... NY, April 17, 2014The development of stem cell therapies ... ability to characterize stem cell populations based on cell ... discovered a new marker that is highly expressed in ... cord blood, which they describe in an article in ... Mary Ann Liebert, Inc., publishers. The article is available ...
(Date:4/17/2014)... births, Down syndrome - or trisomy 21 - is ... results from a chromosomal abnormality where cells of affected ... of the human genome). A study conducted by Stylianos ... Medicine and Development at the University of Geneva (UNIGE) ... light on how the extra chromosome 21 upsets the ...
(Date:4/17/2014)... White House honored Clemson professor Rajendra Singh Thursday ... to promote and expand solar deployment in the ... D. Houser Banks Professor of Electrical and Computer ... Nanoelectronics, is considered a local hero leading the ... economic opportunity in solar power and driving policy ...
Breaking Biology News(10 mins):Trisomy 21: How an extra little chromosome throws the entire genome off balance 2Trisomy 21: How an extra little chromosome throws the entire genome off balance 3White House honors Clemson professor as 'Champion of Change' for solar deployment 2
... orchids are found in habitats where light may be ... surprising that many achlorophyllous (lacking chlorophyll), as well as ... supply them with carbohydrates in order to grow. However, ... and range in their photosynthetic capabilities. For those ...
... 07/07/11, Clearwater Beach, FL. Research to be presented ... Study of Ingestive Behavior (SSIB), the foremost society for research ... ghrelin, a naturally occurring gut hormone, increases our willingness to ... for non-food items. Have you ever wondered about why ...
... developing limbs and digits were present in primitive fish ... to land, researchers have discovered. Genetic switches control ... particular switch taken from fish DNA is placed into ... developing limb region of embryos, University of Chicago researchers ...
Cached Biology News:Orchids and fungi: An unexpected case of symbiosis 2Orchids and fungi: An unexpected case of symbiosis 3Orchids and fungi: An unexpected case of symbiosis 4Genetic switch for limbs and digits found in ancient fish 2Genetic switch for limbs and digits found in ancient fish 3
Rabbit polyclonal to Oct2, prediluted ( Abpromise for all tested applications). entrezGeneID: 5452 SwissProtID: P09086...
Oct 2 Immunogen: Full length human protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
...
Phosphotyrosine IgG mouse monoclonal antibody: Alkaline Phosphatase conjugate...
Biology Products: