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


More Articles
Rediscovering Venus to find faraway earthsRediscovering Venus to find faraway earths

Archaeologists discover bronze remains of Iron Age chariotArchaeologists discover bronze remains of Iron Age chariot

Researchers resolve the Karakoram glacier anomaly, a cold case of climate scienceResearchers resolve the Karakoram glacier anomaly, a cold case of climate science

Fish tale: New study evaluates antibiotic content in farm-raised fishFish tale: New study evaluates antibiotic content in farm-raised fish

New 3-D display technology promises greater energy efficiencyNew 3-D display technology promises greater energy efficiency

Researchers break nano barrier to engineer the first protein microfiberResearchers break nano barrier to engineer the first protein microfiber

Structure of an iron-transport protein revealedStructure of an iron-transport protein revealed

First step: From human cells to tissue-engineered esophagusFirst step: From human cells to tissue-engineered esophagus

Magnetic mirrors enable new technologies by reflecting light in uncanny waysMagnetic mirrors enable new technologies by reflecting light in uncanny ways

Lift weights, improve your memoryLift weights, improve your memory

Spiders: Survival of the fittest groupSpiders: Survival of the fittest group

Autophagy helps fast track stem cell activationAutophagy helps fast track stem cell activation

Myelin vital for learning new practical skillsMyelin vital for learning new practical skills

More physical activity improved school performanceMore physical activity improved school performance

Engineering new vehicle powertrainsEngineering new vehicle powertrains

Around the world in 400,000 years: The journey of the red foxAround the world in 400,000 years: The journey of the red fox

Active aging is much more than exerciseActive aging is much more than exercise

Study: New device can slow, reverse heart failureStudy: New device can slow, reverse heart failure

Are the world's religions ready for ET?Are the world's religions ready for ET?

Gut bacteria, artificial sweeteners and glucose intoleranceGut bacteria, artificial sweeteners and glucose intolerance

Recreating the stripe patterns found in animals by engineering synthetic gene networksRecreating the stripe patterns found in animals by engineering synthetic gene networks

Laying the groundwork for data-driven scienceLaying the groundwork for data-driven science

Hold on, tiger momHold on, tiger mom

Nature's designs inspire research into new light-based technologiesNature's designs inspire research into new light-based technologies

Missing piece found to help solve concussion puzzleMissing piece found to help solve concussion puzzle

Biologists delay the aging process by 'remote control'Biologists delay the aging process by 'remote control'

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

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
Bending -- but not breaking -- in search of new materialsBending -- but not breaking -- in search of new materials

A billion holes can make a batteryA billion holes can make a battery

New materials yield record efficiency polymer solar cellsNew materials yield record efficiency polymer solar cells

Clearing a path for electrons in polymers: Closing in on the speed limitsClearing a path for electrons in polymers: Closing in on the speed limits

Manipulating complex molecules by handManipulating complex molecules by hand

Improving the taste of alcohol-free beer with aromas from the regular beerImproving the taste of alcohol-free beer with aromas from the regular beer

Better bomb-sniffing technologyBetter bomb-sniffing technology

Chemists gain edge in next-gen energyChemists gain edge in next-gen energy

Putting batteries in a kidsafe coat of armor

Two photons strongly coupled by glass fiberTwo photons strongly coupled by glass fiber

Why We are made of 'star stuff'Why We are made of 'star stuff'

Active, biodegradable packaging for oily productsActive, biodegradable packaging for oily products

Novel 3D printing process enables metal additive manufacturing for consumer marketNovel 3D printing process enables metal additive manufacturing for consumer market

Can plants edge out petroleum as raw material for textiles and plastics?

ORNL thermomagnetic processing method provides path to new materialsORNL thermomagnetic processing method provides path to new materials



Archives
November 2014
October 2014
September 2014
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.