Navigation Links
New kid on the plasmonic block
Date:4/18/2011

nanoscale objects with visible light, a new generation of highly efficient light-emitting diodes, and supersensitive chemical and biological detectors. There is even evidence that plasmonic materials can be used to bend light around an object, thereby rendering that object invisible.

The plasmonic phenomenon was discovered in nanostructures at the interfaces between a noble metal, such as gold or silver, and a dielectric, such as air or glass. Directing an electromagnetic field at such an interface generates electronic surface waves that roll through the conduction electrons on a metal, like ripples spreading across the surface of a pond that has been plunked with a stone. Just as the energy in an electromagnetic field is carried in a quantized particle-like unit called a photon, the energy in such an electronic surface wave is carried in a quantized particle-like unit called a plasmon. The key to plasmonic properties is when the oscillation frequency between the plasmons and the incident photons matches, a phenomenon known as localized surface plasmon resonance (LSPR). Conventional scientific wisdom has held that LSPRs require a metal nanostructure , where the conduction electrons are not strongly attached to individual atoms or molecules. This has proved not to be the case as Prashant Jain, a member of the Alivisatos research group and one of the lead authors of the Nature Materials paper, explains.

"Our study represents a paradigm shift from metal nanoplasmonics as we've shown that, in principle, any nanostructure can exhibit LSPRs so long as the interface has an appreciable number of free charge carriers, either electrons or holes," Jain says. "By demonstrating LSPRs in doped quantum dots, we've extended the range of candidate materials for plasmonics to include semiconductors, and we've also merged the field of plasmonic nanostructures, which exhibit tunable photonic properties, with the field of quantum dots, which exhibit tunable electron
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology technology :

1. Denser, more powerful computer chips possible with plasmonic lenses that fly
2. Plasmonic whispering gallery microcavity paves the way to future nanolasers
3. GRIN plasmonics
4. Trapping a rainbow: Lehigh researchers slow broadband light waves with nanoplasmonic structures
5. New Radiation-Blocking Medical Garments Introduced at RSNA Meeting in Chicago : Demron-M Technology Provides Total Protection in a Lightweight, Durable, Flexible Fabric
6. Techstreet Launches BuildingBlocks Utility for Industry Standards Saving Time and Increasing Productivity for Engineers
7. SENOMYX ANNOUNCES INITIATION OF DEVELOPMENT ACTIVITIES FOR NEW BITTER BLOCKERS
8. Hebrew University scientist develop technique for eliminating reblockage of arteries
9. Viroblock SA Reports Positive Results of Preclinical Studies in Antiviral Nasal Spray
10. Spring blockbuster movie now showing
11. Pierre Fabre Dermatologie Starts Clinical Trials on a Beta-Blocker to Treat Severe Infantile Haemangioma
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New kid on the plasmonic block
(Date:9/30/2014)... Fla. , Sept. 30, 2014 CORD:USE ... pleased to announce that it has entered into an ... Inc. (Tianhe) which has licensed a series of patented technologies ... cells for possible clinical applications.  Tianhe is performing Phase ... and Spain using Tianhe,s Stem ...
(Date:9/30/2014)... Md., Sept. 30, 2014 BioHealth Innovation, ... commercializing market-relevant biohealth innovations and increasing access to early-stage ... today that venture capitalist, Tania Fernandez , Ph.D., ... Dr. Fernandez will be a member of the management ... provide up to $50 million in seed and early-stage ...
(Date:9/30/2014)... September 30, 2014 Lyme Research ... of Lyme disease research at universities, today announced the ... on the identification, treatment and cure for Lyme and ... received the most applications in its history—over 20 grant ... “While we were pleased to receive so many solid ...
(Date:9/30/2014)... Whitehouse Laboratories is pleased ... Parenteral Drug Association (PDA) to host a ... container closure integrity testing. This lecture/laboratory course will examine ... philosophies detailed in the recently proposed revision to USP ... course will span container closure integrity testing (leak testing) ...
Breaking Biology Technology:CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 2CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 4Seasoned Life Sciences Venture Capitalist Tania Fernandez Joins BHI to Help Manage New BioHealth Gap Fund 2Lyme Research Alliance Awards Nearly $600,000 in New Grants 2Lyme Research Alliance Awards Nearly $600,000 in New Grants 3Lyme Research Alliance Awards Nearly $600,000 in New Grants 4Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 2Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 3Whitehouse Laboratories to Partner with PDA for Educational Course on Container Closure Integrity Testing 4
... breaches - ... - ... 29 Protein Sciences Corporation,("PSC") announced today that the sale of ... Inc. (NYSE: EBS ),and its affiliate (collectively "Emergent") has been ...
... 29 /PRNewswire-FirstCall/ - Par,Pharmaceutical Companies, Inc. (NYSE: PRX ... and live webcast on Friday, August 8, 2008 at ... ended June 28, 2008. The,Company will release results after ... release will be available on the Par website at, ...
... Event Expected to Attract a Record Number of ... ... DeviceSpace(TM), the world,s,leading online medical device and diagnostics job board ... Minnesota on,Monday, September 8, 2008. The event will take place at ...
Cached Biology Technology:Protein Sciences Announces Termination of Deal to Sell to Emergent BioSolutions 2DeviceSpace(TM) to Host Medical Device and Diagnostics Career Fair in Minneapolis 2
(Date:9/30/2014)... research, involving mice and published in the October 2014 ... , suggests that just because you can do ... team of Italian scientists have found that using marijuana ... immune system. This damage may result in autoimmune diseases ... bowel disease and rheumatoid arthritis in adulthood. , "I ...
(Date:9/30/2014)... some hope: A new research report published in October ... , explains how scientists developed a synthetic version of ... development in human and mouse eggs similar to the ... during fertilization. , "We believe that the results of ... understanding of human fertilization by providing a precise answer ...
(Date:9/30/2014)... of perilous threats in today,s ocean. From overfishing ... fragile coral ecosystems are disappearing at unprecedented rates ... of corals surrounding the island of Moorea in ... tropical environment: coral guard-crabs. New research from the ... scientist Seabird McKeon and the museum,s predoctoral fellow ...
Breaking Biology News(10 mins):Adolescent exposure to thc may cause immune systems to go up in smoke 2Synthetic sperm protein raises the chance for successful in vitro fertilization 2Smithsonian scientists discover coral's best defender against an army of sea stars 2
... of different cancers actually share something in common ?a molecular ... microRNA (miRNA) that target key cancer genes and promote malignant ... as an emerging class of gene regulators and may also ... , The study appears online in the Proceedings of ...
... have for the first time reconstructed the Darwinian evolution ... research was led by Joe Thornton, assistant professor of ... and Evolutionary Biology, and will be published in the ... can drive the evolution of complex molecular systems ?those ...
... UT Southwestern Medical Center ophthalmologists will be the first in ... to fix nearsightedness. , "Think of it as a contact ... who is inserting the new implantable collamer lens, or ICL, ... , The ICL can replace or reduce the need for ...
Cached Biology News:Common molecular 'signature' identified in solid tumors 2Common molecular 'signature' identified in solid tumors 3Evolution of 'irreducible complexity' explained 2New 'implanted contacts' designed to fix nearsightedness 2
... from KUBTEC is a dual capability system with ... representation of the specimen under test. While the ... images, the micro focus source also allows the ... standard 2D images. The 50 mm x 50 ...
... electroporation products and specialty electrodes, has developed ... experiment optimization and large volume electroporation. The ... Molecular Delivery. The days of researchers struggling ... the number of samples and cell types ...
... (PR) Competitor Assay Kits are ideal ... receptor binding compounds using fluorescence polarization ... fusion of glutathione transferase to the ... receptor [PR-LBD(GST)] and a proprietary, fluorescently ...
... Kodak Companys Molecular Imaging Systems group ... Station 4000 Digital Imaging Systems, featuring ... for comprehensive fluorescence, luminescence, radiographic and ... million pixel CCD and 10x optical ...
Biology Products: