Navigation Links
Berkeley Lab scientists control light scattering in graphene
Date:3/16/2011

Scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley have learned to control the quantum pathways determining how light scatters in graphene. Controlled scattering provides a new tool for the study of this unique material graphene is a single sheet of carbon just one atom thick and may point to practical applications for controlling light and electronic states in graphene nanodevices.

The research team, led by Feng Wang of Berkeley Lab's Materials Sciences Division, made the first direct observation, in graphene, of so-called quantum interference in Raman scattering. Raman scattering is a form of "inelastic" light scattering. Unlike elastic scattering, in which the scattered light has the same color (the same energy) as the incident light, inelastically scattered light either loses energy or gains it.

Raman scattering occurs in graphene and other crystals when an incoming photon, a particle of light, excites an electron, which in turn generates a phonon together with a lower-energy photon. Phonons are vibrations of the crystal lattice, which are also treated as particles by quantum mechanics.

Quantum particles are as much waves as particles, so they can interfere with one another and even with themselves. The researchers showed that light emission can be controlled by controlling these interference pathways. They present their results in a forthcoming issue of the journal Nature, now available in Advance Online Publication.

Manipulating quantum interference, in life and in the lab

"A familiar example of quantum interference in everyday life is antireflective coating on eyeglasses," says Wang, who is also an assistant professor of physics at UC Berkeley. "A photon can follow two pathways, scattering from the coating or from the glass. Because of its quantum nature it actually follows both, and the c
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology technology :

1. Strange new twist: Berkeley researchers discover Möbius symmetry in metamaterials
2. Berkeley Law Survey Challenges Popular Beliefs About Hi-tech Startup Patents
3. Grove Gift Launches Translational Medicine Program at UCSF & UC Berkeley
4. Berkeley Lab scientists create molecular paper
5. LS9, Inc., U.C Berkeley, and JBEI Make Major Breakthrough in Cellulosic Fuels Production
6. Berkeley researchers take the lead out of piezoelectrics
7. Berkeley researchers find new route to nano self-assembly
8. DOE to Explore Scientific Cloud Computing at Argonne, Lawrence Berkeley National Laboratories
9. Now, the story can be told how scientists helped ID Amerithrax
10. Laboratory-grown urethras implanted in patients, scientists report
11. Cellular Dynamics International Scientists Report on Efficient Method to Produce Footprint-Free Induced Pluripotent Stem Cells (iPSCs) Under Feeder-Free Conditions
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Berkeley Lab scientists control light scattering in graphene
(Date:7/30/2015)... WARRINGTON, Pa. , July 30, 2015 /PRNewswire/ ... announced that it has received the second $1.0M ... Business Innovation Research (SBIR) grant valued at up ... the company,s aerosolized KL4 surfactant as a potential ... lung injury.  Discovery Labs was awarded an initial ...
(Date:7/29/2015)... 2015 Sanofi, un leader ... résultats pour le premier semestre 2015. Le Directeur ... Visionner l,interview vidéo et lire la ... Au sommaire de l,interview :  ... croissance - Diabète - ...
(Date:7/29/2015)... July 29, 2015 /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ... Company,s Chief Financial Officer has resigned.  The Company has ... Officer who retired in December 2014, as full time ... permanent successor.     Andy Ashworth began ... ensure a smooth transition.  Andy was the Company,s CFO ...
(Date:7/29/2015)... , July 29, 2015 ... announced the addition of the "Global Biosimilars ... offering. The Global Biosimilars Market, 2015 ... the rapidly growing biosimilars market. With the blockbuster ... to minimize costs, biosimilars are being viewed as ...
Breaking Biology Technology:Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 2Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 3BioAmber Announces Change in Chief Financial Officer 2BioAmber Announces Change in Chief Financial Officer 3Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3
... INTRODUCTION , ... the absorbance at 280 nm and calculating the concentration using ... because extinction coefficients are typically obtained using standard cuvettes with ... be done in microplates, but they have not been widely-used ...
... Corporation, 1311 Orleans Dr., Sunnyvale, CA 94089. , , , ... , This application note describes ... Probes in the Gemini XS, Gemini EM and SpectraMax M2 ... assay is much more sensitive than traditional photometer methods, such as absorbance ...
... T. Ferguson, Ph.D., ... , INTRODUCTION , This application note ... Molecular Devices to study the performance of the LIVE/DEAD ... dyes, calcein AM (cal AM) and ethidium homodimer (EthD-1), to stain ...
Cached Biology Technology:PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 2PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 3PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 4PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 5PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 6PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 7PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 8PathCheck Applied to Measurement of Protein Solutions in the SpectraMax Plus Microplate Spectrophotometer (MaxLine Application Note #26) 9Using the NanoOrange protein kit in the Gemini XS, Gemini EM and SpectraMax M2 microplate readers (MaxLine Application Note #22) 2Using the NanoOrange protein kit in the Gemini XS, Gemini EM and SpectraMax M2 microplate readers (MaxLine Application Note #22) 3Using the NanoOrange protein kit in the Gemini XS, Gemini EM and SpectraMax M2 microplate readers (MaxLine Application Note #22) 4LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 2LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 3LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 4LIVE/DEAD Viability/Cytotoxicity Assay for Animal Cells Using the SpectraMax Gemini XS Fluorescence Microplate Reader (MaxLine Application Note #43) 5
(Date:7/8/2015)... NEW YORK , July 8, 2015  BD ... announced BD & Guidepoint Mentor, a new ... to Guidepoint,s expert network services. BD ... technologies to improve healthcare delivery and outcomes and, with ... start-up entrepreneur will be able to directly engage with ...
(Date:7/8/2015)... , July 8, 2015 The ... as this summer,s must have products such as wearables, smart ... as popularity for biometrics based devices continues to rapidly grow.  ... Inc. (NASDAQ: NXTD ), Google Inc. (NASDAQ: GOOG ... FIT ), GoPro, Inc. (NASDAQ: GPRO ) and ...
(Date:7/7/2015)... Calif. , July 7, 2015  Based ... market, Frost & Sullivan recognizes Credence ID, LLC ... Entrepreneurial Company of the Year Award. Credence ... to aid in its mission of offering enrollment ... populations globally. As Credence ID was formed by ...
Breaking Biology News(10 mins):BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 2Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 3Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 4Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 5
... professor Karen Warkentin, working at the Smithsonian Tropical ... frog embryos at a very early developmental stage ... reported in the Nov. 7, 2008 issue of ... initial responses to the environment may be critical ...
... West Nile virus in North America over the past decade ... according to an article in the November issue of ... before its emergence in New York in 1999, has since ... Nile virus has killed hundreds of millions of birds and ...
... -- Scientists have long known that it,s possible for one ... by skipping or including certain sequences from the messenger RNA. ... as alternative splicing, is both far more prevalent and varies ... all human genes, about 94 percent, generate more than one ...
Cached Biology News:Red-eyed treefrog embryos actively avoid asphyxiation inside their eggs 2Human genes sing different tunes in different tissues 2
... Disposable. Virgin, optically clear polystyrene ... and alphanumeric coordinates for cell counting. ... number is a new product number, ... number. If showing no availability yet, ...
... system uses two Adept CE 4100 high ... 4200 dual wavelength detector for added flexibility. ... PowerStream data processing software and interface unit, CE ... The supplied analytical pumps may be substituted by ...
... may be carried out using this high ... attention. System control and data processing is ... The elegant, powerful and very easy to ... 98 and 2000., The supplied automatic sample injector ...
... routine binary separations. Excellent detection is provided ... variable wavelength detector. Ultra-fine control of the ... highly accurate and precise, high pressure dual piston ... may be plotted on a printer or an ...
Biology Products: