Navigation Links
Regular light bulbs made super-efficient with ultra-fast laser
Date:5/29/2009

An ultra-powerful laser can turn regular incandescent light bulbs into power-sippers, say optics researchers at the University of Rochester. The process could make a light as bright as a 100-watt bulb consume less electricity than a 60-watt bulb while remaining far cheaper and radiating a more pleasant light than a fluorescent bulb can.

The laser process creates a unique array of nano- and micro-scale structures on the surface of a regular tungsten filamentthe tiny wire inside a light bulband theses structures make the tungsten become far more effective at radiating light.

The findings will be published in an upcoming issue of the journal Physical Review Letters.

"We've been experimenting with the way ultra-fast lasers change metals, and we wondered what would happen if we trained the laser on a filament," says Chunlei Guo, associate professor of optics at the University of Rochester. "We fired the laser beam right through the glass of the bulb and altered a small area on the filament. When we lit the bulb, we could actually see this one patch was clearly brighter than the rest of the filament, but there was no change in the bulb's energy usage."

The key to creating the super-filament is an ultra-brief, ultra-intense beam of light called a femtosecond laser pulse. The laser burst lasts only a few quadrillionths of a second. To get a grasp of that kind of speed, consider that a femtosecond is to a second what a second is to about 32 million years. During its brief burst, Guo's laser unleashes as much power as the entire grid of North America onto a spot the size of a needle point. That intense blast forces the surface of the metal to form nanostructures and microstructures that dramatically alter how efficiently can radiate from the filament.

In 2006, Guo and his assistant, Anatoliy Vorobeyv, used a similar laser process to turn any metal pitch black. The surface structures created on the metal were incredibly effective at captu
'/>"/>

Contact: Jonathan Sherwood
jonathan.sherwood@rochester.edu
585-273-4726
University of Rochester
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Atrial Fibrillation Month - StopAfib.org Announces September Focus on Life-Threatening Irregular Heartbeat
2. World Sight Day - Britons at Risk of Losing Their Sight by Not Having Regular Eye Tests
3. Dendreon Announces Publication of Phase 1 Study Highlighting Immunologic and Clinical Activity of Lapuleucel-T (Neuvenge(R)) in Advanced Breast Cancer Patients
4. ImmuneRegen BioSciences Files 8-K that Highlights Enclosed Shareholder Letter Discussing Recent Achievements and Outlook
5. Safety Profile of TAXUS(R) Liberte(TM) Stent System Highlighted in Worlds Largest Stent Registry
6. Stimuvax(R) Phase II data highlight three-year survival results for patients with non-small cell lung cancer
7. Three Studies by Independent Scientists Highlighting Pressure Cycling Technology (PCT) to be Presented this Week at the British Mass Spectrometry Societys 29th Annual Meeting
8. Access Highlighted in Recent BusinessWeek Article
9. Lighting the Onco-Pipeline, Stem Cell Cancer, and More at Global Cancer Congress, January 28-29, 2008, Tampa
10. Highlights of Economic and Business Growth in the Tampa Bay Region
11. Respironics Acquires Apollo Light Systems, Inc., Expands into Circadian Rhythm Device-Based Therapy Market
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Regular light bulbs made super-efficient with ultra-fast laser
(Date:7/10/2014)... Capital, a firm specializing in acquiring and managing food ... the Slim-Fast brand from Unilever. Unilever will retain a ... were not disclosed. Slim-Fast is a branded ... shakes, powders, bars and snacks to retail customers throughout ... United Kingdom and Ireland.  The ...
(Date:7/10/2014)... in the fight against terrorism with the creation of ... with the use of light and special glass fibres. ... B: Chemical , the researchers describe a novel optical ... low as 6.3 ppm (parts per million). It requires ... "Traditionally explosives detection has involved looking for metals that ...
(Date:7/10/2014)... RICHLAND, Wash. The lithium-ion batteries that power our ... run longer on a single charge with the help ... the porous material to replace the graphite traditionally used ... more than 10 times the energy storage capacity of ... lithium-ion battery electrode was published today in Nature ...
(Date:1/15/2014)... approach akin to assembling a club sandwich at ... (NIST) researchers have succeeded in crafting a uniform, ... of foam commonly used in upholstered furniture and ... nanotube-coated polyurethane foam was reduced 35 percent compared ...
Breaking Biology Technology:Kainos Capital Acquires Slim-Fast From Unilever 2Detecting trace amounts of explosives with light 2Silicon sponge improves lithium-ion battery performance 2Silicon sponge improves lithium-ion battery performance 3Layered security: Carbon nanotubes promise improved flame-resistant coating 2
... April 15 Hovione is pleased to announce,that ... that it intends,to use Hovione,s TwinCaps(R) dry powder ... an inhaled long-acting neuraminidase inhibitor active,against the influenza ... III clinical trials in Japan and other Asian ...
... MADISON, N.J., April 15 Quest Diagnostics,Incorporated (NYSE: ... resolution of the,previously disclosed federal government investigation related ... kit manufacturing subsidiary closed,voluntarily in 2006. Quest Diagnostics ... 2004. , Quest Diagnostics ...
... Development for Neurological ConditionsBROOMFIELD, Colo., April 15 ... in central nervous system (CNS) diseases, announced today ... development company. The new company will focus ... molecule drugs for acute and chronic neurological conditions ...
Cached Biology Technology:Hovione's TwinCaps(R) Inhaler in Phase III Clinical Trials for Influenza 2Hovione's TwinCaps(R) Inhaler in Phase III Clinical Trials for Influenza 3Quest Diagnostics Finalizes Previously Announced Settlement With Government Related to Test Kit Subsidiary Closed in 2006 2Accera, Inc. Launches Neuera Pharmaceuticals, Inc. 2Accera, Inc. Launches Neuera Pharmaceuticals, Inc. 3
(Date:7/11/2014)... from Ume University, Sweden, have explored two different ... reaction sequence leading to the formation of oxygen ... published in the scientific journal Nature Communications ... present day synthetic catalysts for water oxidation, which ... for the direct storage of solar energy in ...
(Date:7/11/2014)... normal circumstances, astrocytes participate in normal physiological ... exhibit therapeutic and repairing effects on brain ... found that nerve cells differentiated from adipose-derived ... viability, which produces influences on subsequent studies ... Hospital, Hebei United University, China demonstrated that ...
(Date:7/10/2014)... In Santa Fe, Albuquerque, and other major cities in ... watered with treated municipal wastewater rather than precious potable ... more than 40% of all golf courses receive treated ... courses. , Additionally, golf courses and homeowners alike ... nutrient in fertilizer is nitrate. A New Mexico State ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2'Tailored' water -- the latest in lawn care 2
... normal immune cells to become specialized tumor fighters, demonstrating for ... the body and shrink large tumors in humans. , ... the experimental treatment saw their tumors shrink and were declared ... after the therapy began, Steven A. Rosenberg of the National ...
... bacterial perpetrator of the often severe disease caused ... keep looking: Scientists at the National Institute of ... National Institutes of Health, have exonerated a toxin ... Panton-Valentine leukocidin (PVL) is one of many toxins ...
... dot on his computer screen. The dot ?which represents ... into a mass with finger-like projections that looks like ... biology envisions a future when computer simulations like this ... and formulate individualized treatment plans. For the last two ...
Cached Biology News:Science researchers genetically transform immune cells into tumor fighters 2Science researchers genetically transform immune cells into tumor fighters 3MRSA toxin acquitted: Study clears suspected key to severe bacterial illness 2MRSA toxin acquitted: Study clears suspected key to severe bacterial illness 3Math model predicts cancer behavior 2Math model predicts cancer behavior 3Math model predicts cancer behavior 4
lid holder -see Blotters (Semi-Dry) for more info...
... QPlate is the consumable ... 16 contains 16 individually controlled ... contains a sophisticated liquid flow ... fast and precise solution and ...
This kit is designed to select cells labeled with phycoerythrin- (PE-) conjugated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
... bring you ease of use and rapid solutions to meet your laboratory's requirements for data management ... ... ... CLARA® is the standard software for Staccato Systems and ...
Biology Products: