Navigation Links
Rice University lab develops technique to control light from nanoparticles
Date:9/29/2011

A nanoscale game of "now you see it, now you don't" may contribute to the creation of metamaterials with useful optical properties that can be actively controlled, according to scientists at Rice University.

A Rice laboratory led by chemist Stephan Link has discovered a way to use liquid crystals to control light scattered from gold nanorods. The researchers use voltage to sensitively manipulate the alignment of liquid crystal molecules that alternately block and reveal light from the particles; the gold nanorods collect and retransmit light in a specific direction.

The research was reported in the American Chemical Society journal Nano Letters.

It seems simple, but Link said the technique took two years to refine to the point where light from the nanoparticles could be completely controlled.

"The key to our approach is the in-plane rotation of liquid crystal molecules covering individual gold nanorods that act as optical antennas," said Link, an assistant professor of chemistry and electrical and computer engineering. "Learning how our devices work was exciting and has provided us with many ideas of how to manipulate light at the nanoscale."

Link said the device is actually a super half wave plate, a refined version of a standard device that alters the polarization of light.

With the new device, the team expects to be able to control light from any nanostructure that scatters, absorbs or emits light, even quantum dots or carbon nanotubes. "The light only has to be polarized for this to work," said Link, who studies the plasmonic properties of nanoparticles and recently authored a perspective on his group's recent research in plasmonics for the Journal of Physical Chemistry Letters. (View a video of Link and his team here.)

In polarized light, like sunlight reflecting off water, the light's waves are aligned in a particular plane. By changing the direction of their alignment, liquid crystal
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Parent Project Muscular Dystrophy Awards End Duchenne Grant to University of Pennsylvanias Dr. Tejvir S. Khurana
2. University of Western Ontario researchers investigate stress and breast cancer
3. SanBio Announces Site Opening of Phase 1/2a Clinical Trial of Novel Cell Therapy in Stable Stroke Patients at University of Pittsburgh Medical Center
4. HUYA Bioscience International Forms Alliance With Zhejiang Chinese Medical University Life Science College
5. Swedish University Hospital Improves Monitoring of Treatment Efficacy in Multiple Sclerosis With Synthetic MRI Innovation
6. University of Houston receives NSF grant for high school teachers program
7. New nanoscale parameter by Aalto University resolves dilemmas on silicon property
8. University of Muenster Bridges 1st Patient to Transplant with SynCardias Total Artificial Heart
9. Elsevier and the National University of Singapore Announce Winners of 24-Hour Hackathon
10. The Human Brain is Sensitive to Light, Breakthrough Findings From Valkee and the University of Oulu
11. CEM President and CEO Delivers Commencement Address at the University of Texas at Austin Chemistry and Biochemistry Department Graduation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... 2014 Deep Knowledge Ventures last ... on ‘Commercialising Longevity Research’ and welcomed a host ... London Bioscience Innovation Center for the event, organised ... Analytics Ltd. The meeting highlighted the need for ... for age-related disease, as well as the crucial ...
(Date:7/10/2014)... (PRWEB) July 10, 2014 Robert Harman, DVM, ... Medicine company, is proud to announce the relaunch of his ... with a new series called “ What are Stem Cells ... an honest and straightforward foundation in the basics of stem ... decision on the right type of treatment when considering regenerative ...
(Date:7/10/2014)... 10, 2014  Franciscan St. Anthony Health-Crown ... for respiratory monitoring outside the operating room, ... in embracing state-of-the-art patient safety technology. ... breathing and can alert medical caregivers when ... amount of carbon dioxide the patient is ...
(Date:7/10/2014)... 2014 Research and Markets ( http://www.researchandmarkets.com/research/s3bqj2/photonic ... "International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, ... report to their offering. ... photonic integration traces its roots in the latter ... photonic integration went unexplored and unfulfilled for several ...
Breaking Biology Technology:DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 2Robert Harman, DVM Talks About What Stem Cells are in His Latest Blog Series for Vet-Stem, Inc. 3Franciscan St. Anthony Health-Crown Point Underscores Patient Safety Commitment Through Expanded Use of Capnography 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2
... Robotic cars attracted attention last decade with a 100-mile driverless ... put up by the U.S. government. The past ... microrobots, miniaturized mobile machines designed to perform specific tasks. And ... some think the time has come for a microrobotics challenge. ...
... CASTRES, France , July 2, 2010 Olivier ... Pierre Fabre,Group starting September 1, 2010 . , ... Until now, Olivier Bohuon , 51, ... such, he ran the,group,s entire pharmaceutical activities from Chicago ( $22 ...
... ... progenitors into specific T cell lineages to the activity of a single gene encoding a ... for the development of blood cells lineages. , ... (PRWeb UK) July 1, 2010 -- A research team in Japan has ...
Cached Biology Technology:Thermal-powered, insect-like robot crawls into microrobot contenders' ring 2Thermal-powered, insect-like robot crawls into microrobot contenders' ring 3Olivier Bohuon Joins Pierre Fabre 2The Last Checkpoint to T Cell Fate 2
(Date:7/11/2014)... available in German . ... that uses the refraction of X-rays through a specimen ... with this method are often of much higher quality ... team of Prof. Franz Pfeiffer are particularly interested in ... including X-ray phase-contrast imaging. One main goal is ...
(Date:7/11/2014)... at the National Institute of Standards and Technology ... work more effectively, they often prove that necessity ... the case recently for M. Lorna De Leoz ... growing specialization of glycomics. Glycomics is the study ... that are attached to proteins and lipids and ...
(Date:7/11/2014)... 2014, Shenzhen, China Researchers from Salk Institute for ... first time evaluated the safety and reliability of ... developed a new method, TALEN-HDAdV, which could significantly ... cell (hiPSC). This study published online in ... foundation for stem cell-based gene therapy. , The ...
Breaking Biology News(10 mins):New simple setup for X-ray phase contrast 2A new genome editing method brings the possibility of gene therapies closer to reality 2
... Health (NIMH), part of the National Institutes of Health, ... social behavior in humans--one of the most important but ... reported in Nature Neuroscience, published online on July 10, ... volunteers to those with a genetic abnormality, Williams Syndrome, ...
... Academy of Sciences (CAS) and the Danish Committee of ... release of pig genomic sequences. The released sequence data ... different domestic pig breeds from Europe and China. The ... genome sequencing effort, the Sino-Danish Pig Genome Project, started ...
... truckers and college students pulling all-nighters, appears to do ... is one of several in a new study that ... the modulation of sleep, wake, and arousal states. , ... colleagues at The Neurosciences Institute in San Diego. , ...
Cached Biology News:Scientists uncover new clues about brain function in human behavior 2Scientists uncover new clues about brain function in human behavior 3‘Blue Brain?project explores thought at molecular level 2