Chemistry Times
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to ChemistryTimes.com RSS Feed Subscribe


More Articles
New blood: Tracing the beginnings of hematopoietic stem cellsNew blood: Tracing the beginnings of hematopoietic stem cells

Mysteries of space dust revealedMysteries of space dust revealed

New study takes the shine off magpie folkloreNew study takes the shine off magpie folklore

A shift in the code: New method reveals hidden genetic landscapeA shift in the code: New method reveals hidden genetic landscape

Highs and lows: Height changes in the ice sheets mappedHighs and lows: Height changes in the ice sheets mapped

Despite academic achievement, pay gaps likely continue between the racesDespite academic achievement, pay gaps likely continue between the races

Bats bolster brain hypothesis, maybe technology, tooBats bolster brain hypothesis, maybe technology, too

New discovery: Microbes create dripstonesNew discovery: Microbes create dripstones

Common household chemicals decrease reproduction in mice, study findsCommon household chemicals decrease reproduction in mice, study finds

Program earns kudos for improving grades, retaining studentsProgram earns kudos for improving grades, retaining students

Has the puzzle of rapid climate change in the last ice age been solved?Has the puzzle of rapid climate change in the last ice age been solved?

Lithium-based neutron detector named among Top 100 technologies of the yearLithium-based neutron detector named among Top 100 technologies of the year

A self-organizing thousand-robot swarmA self-organizing thousand-robot swarm

Genetically engineered fruit flies could save cropsGenetically engineered fruit flies could save crops

Eco-friendly 'pre-fab nanoparticles' could revolutionize nano manufacturingEco-friendly 'pre-fab nanoparticles' could revolutionize nano manufacturing

Diamonds are a quantum computer's best friendDiamonds are a quantum computer's best friend

Our ancestor's 'leaky' membrane answers big questions in biologyOur ancestor's 'leaky' membrane answers big questions in biology

Crash-testing rivetsCrash-testing rivets

Scientists discover the miracle of how geckos move, cling to ceilingsScientists discover the miracle of how geckos move, cling to ceilings

Photo editing algorithm changes weather, seasons automaticallyPhoto editing algorithm changes weather, seasons automatically

Geography matters: Model predicts how local 'shocks' influence U.S. economyGeography matters: Model predicts how local 'shocks' influence U.S. economy

Shrinking dinosaurs evolved into flying birdsShrinking dinosaurs evolved into flying birds

Running for life: How speed restricts evolutionary change of the vertebral columnRunning for life: How speed restricts evolutionary change of the vertebral column

Protein's 'hands' enable bacteria to establish infection, research findsProtein's 'hands' enable bacteria to establish infection, research finds

A healthy lifestyle adds years to lifeA healthy lifestyle adds years to life

Do probiotics help kids with stomach bugs?Do probiotics help kids with stomach bugs?

Strict diet suspends development, doubles lifespan of wormsStrict diet suspends development, doubles lifespan of worms

Identified for the first time what kind of explosive has been used after the detonationIdentified for the first time what kind of explosive has been used after the detonation

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Toward better solar cells: Chemists gain control of light-harvesting paths (10/12/2009)

Tags:
solar cells, dendrimers

University of Florida chemists have pioneered a method to tease out promising molecular structures for capturing energy, a step that could speed the development of more efficient, cheaper solar cells.

"This gives us a new way of studying light-matter interactions," said Valeria Kleiman, a UF associate professor of chemistry. "It enables us to study not just how the molecule reacts, but actually to change how it reacts, so we can test different energy transfer pathways and find the most efficient one."

Kleiman is the principal investigator in the research featured in a paper set to appear Friday in the journal Science.

Her work focuses on molecules known as dendrimers whose many branching units make them good energy absorbers. The amount of energy the synthetic molecules can amass and transfer depends on which path the energy takes as it moves through the molecule. Kleiman and three co-authors are the first to gain control of this process in real time. The team demonstrated that it could use phased tailored laser pulses -- light whose constituent colors travel at different speeds -- to prompt the energy to travel down different paths.

"What we see is that we control where the energy goes by encoding different information in the excitation pulses," Kleiman said.

Researchers who now test every new molecular structure for its energy storage and transfer efficiency may be able to use what Kleiman called a new spectroscopic tool to quickly identify the most promising structures for photovoltaic devices.

"Imagine you want to go from here to Miami, and the road is blocked somewhere," she said. "With this process, we're able to say, 'Don't take that road, follow another one instead.'"

Note: This story has been adapted from a news release issued by the University of Florida

Post Comments:

Search
New Articles
Scripps Research Institute chemists uncover powerful new click chemistry reactivityScripps Research Institute chemists uncover powerful new click chemistry reactivity

Novel chip-based platform could simplify measurements of single molecules

Engineer turns metal into glass

Copper foam turns carbon dioxide into useful chemicalsCopper foam turns carbon dioxide into useful chemicals

Foam favorable for oil extractionFoam favorable for oil extraction

Therapy for ultraviolet laser beams: Hydrogen-treated fibersTherapy for ultraviolet laser beams: Hydrogen-treated fibers

Researchers prove stability of wonder material silicene

Scientists enhance synthesis of chromium dioxide (100) epitaxial thin film growthScientists enhance synthesis of chromium dioxide (100) epitaxial thin film growth

Origami could lead to exotic materials, tiny transformers

Researchers uncover novel process for creation of fuel and chemical compounds

Diamond defect interior designDiamond defect interior design

Watching chemistry in motion: Chemical environments mapped using molecular vibrationsWatching chemistry in motion: Chemical environments mapped using molecular vibrations

New material structures bend like microscopic hair

3-D printing finds its 'sweet spot' through 'nifty shades of gray'

A protecting umbrella against oxygenA protecting umbrella against oxygen



Archives
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007


Science Friends
Agricultural Science
Astronomy News
Sports Tech
Biology News
Biomimicry Science
Cognitive Research
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetic Archaeology
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.