Navigation Links
Sharpening the nanofocus
Date:5/17/2011

Such highly coveted technical capabilities as the observation of single catalytic processes in nanoreactors, or the optical detection of low concentrations of biochemical agents and gases are an important step closer to fruition. Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab), in collaboration with researchers at the University of Stuttgart in Germany, report the first experimental demonstration of antenna-enhanced gas sensing at the single particle level. By placing a palladium nanoparticle on the focusing tip of a gold nanoantenna, they were able to clearly detect changes in the palladium's optical properties upon exposure to hydrogen.

"We have demonstrated resonant antenna-enhanced single-particle hydrogen sensing in the visible region and presented a fabrication approach to the positioning of a single palladium nanoparticle in the nanofocus of a gold nanoantenna," says Paul Alivisatos, Berkeley Lab's director and the leader of this research. "Our concept provides a general blueprint for amplifying plasmonic sensing signals at the single-particle level and should pave the road for the optical observation of chemical reactions and catalytic activities in nanoreactors, and for local biosensing."

Alivisatos, who is also the Larry and Diane Bock Professor of Nanotechnology at the University of California, Berkeley, is the corresponding author of a paper in the journal Nature Materials describing this research. The paper is titled "Nanoantenna-enhanced gas sensing in a single tailored nanofocus." Co-authoring the paper with Alivisatos were Laura Na Liu, Ming Tang, Mario Hentschel and Harald Giessen.

One of the hottest new fields in technology today is plasmonics the confinement of electromagnetic waves in dimensions smaller than half-the-wavelength of the incident photons in free space. Typically this is done at the interface between metallic nanostructures,
'/>"/>

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

Page: 1 2 3 4

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sharpening the nanofocus
(Date:2/5/2015)... , Jan. 28, 2015 Research and ... the addition of the "Global Biometrics Market ... Regions and Countries " report to their offering. ... Asia-Pacific is anticipated to ... 2015, owing to increasing government spending towards IT ...
(Date:1/22/2015)... , Jan. 13, 2015 /PRNewswire/ - Today, FindBiometrics, the leading ... the launch of its new website design. "When ... its infancy", says Peter O,Neill , founder and CEO ... the industry needs involvement from the key players on a ...
(Date:1/22/2015)... NXTD and NXTDW) a biometric authentication company focused on ... Wocket™ smart wallet at CES 2015 in Las Vegas ... the "11 Hot Products at CES" in a review published in Wired.com, ... Newseveryday.com and "The top 10 gadgets from CES 2015" by Danny ...
Breaking Biology News(10 mins):Global Biometrics Market (2014-2020): Market Forecast By Technologies, Applications, End Use, Regions and Countries 2Global Biometrics Market (2014-2020): Market Forecast By Technologies, Applications, End Use, Regions and Countries 3Identity Industry Leading Publication Debuts New Look As Biometrics Hit Mainstream 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3
... Dr. William Phillips, an Office of Naval Research ... lecture at ONR,s spring distinguished lecture series May ... the Coolest Stuff," highlighted the importance of basic ... scientists. Among the attendees at Phillips, lecture ...
... . , It is the concentration of a few ... the early development of organisms. In the renowned journal ... Pia Aanstad of the University of Innsbruck reports that a ... concentration of the signaling molecule Hedgehog. The development ...
... Stockholm, Sweden and Addis Ababa, Ethiopia Current research ... The related report by Rahman et al, "Compartmentalization of ... cells but elevated levels of FoxP3+ regulatory T cells ... issue of The American Journal of Pathology . ...
Cached Biology News:Nobel Laureate underscores importance of investment in basic research 2Why the thumb of the right hand is on the left hand side 2TB -- hiding in plain sight 2
(Date:2/27/2015)... , Feb. 27, 2015  Steep Hill, the industry ... and internationally, intends to open a full service medical ... Mexico , bringing advanced scientific tools and methodology ... Steep Hill is currently the only laboratory licensed ... potency and contaminant testing in order to meet the ...
(Date:2/26/2015)... 2015 /PRNewswire/ - SQI Diagnostics Inc. ("SQI" or the ... that develops and commercializes proprietary technologies and products for ... results for the fiscal first quarter ended December  31, ... Canadian dollars (CAD), unless otherwise stated. ... business from our existing customers and add to our ...
(Date:2/26/2015)... (PRWEB) February 26, 2015 The Movement ... demonstration to support life extension technologies and awareness. The ... Universal Coordinated Time, on March 21st 2015, in a ... , Eric Schulke, Founder of MILE, says, “Our ... with urgency. The Movement for Indefinite Life Extension is ...
(Date:2/26/2015)... February 26, 2015 The Pittcon ... at the Ernest N. Morial Convention Center in ... as of February 19, 2015) displaying products and ... academic, and government labs. The Exposition will offer ... not limited to, analytical chemistry; drug discovery; nanotechnology; ...
Breaking Biology Technology:Steep Hill First to Receive Provisional Approval to Establish Laboratory Services for Cannabis Testing in State of New Mexico 2SQI Diagnostics Reports First Quarter Financial Results 2SQI Diagnostics Reports First Quarter Financial Results 3SQI Diagnostics Reports First Quarter Financial Results 4SQI Diagnostics Reports First Quarter Financial Results 5SQI Diagnostics Reports First Quarter Financial Results 6Indefinite Life Extension Activists Organize Online Demonstration 2Indefinite Life Extension Activists Organize Online Demonstration 3Pittcon 2015 Announces Exposition Highlights 2
... hemostatic powder is available in ready-to-use applicator, ATLANTA, ... biomaterials, medical device and tissue processing company, announced,today that ... Hemostase MPH for use in general, cardiac and vascular ... U.S., the United,Kingdom and Germany in the second quarter ...
... References to the Brazilian,ethanol industry in the ... the Amsterdam-based non-government organization Friends of,the Earth, ... outdated,information that in no way reflects current ... comes from Marcos Sawaya Jank, president of ...
... and Products Offset Patent Expirations, SAN FRANCISCO, ... of major neuropathic pain (NP) conditions is currently ... a report released today by,WWMR, Inc. Growth over ... by the,successful launch of Lyrica (pregabalin) for diabetic ...
Cached Biology Technology:CryoLife Expands Distribution of Hemostase MPH(R) to France through Laboratoire Gamida 2CryoLife Expands Distribution of Hemostase MPH(R) to France through Laboratoire Gamida 3Friends of the Earth Report on Biofuel Production Offers Incomplete, Outdated and Inaccurate Picture, According to Brazilian Sugarcane Industry Association 2Friends of the Earth Report on Biofuel Production Offers Incomplete, Outdated and Inaccurate Picture, According to Brazilian Sugarcane Industry Association 3US Neuropathic Pain Market Value Doubles to $5 Billion by 2018 2US Neuropathic Pain Market Value Doubles to $5 Billion by 2018 3
... be used with all 96-well ... stacking of covered plates ... with automated systems ... are available for use with ...
... covers can be used with ... covers for stacking of covered ... for use with automated systems ... and non-ridged, are available for ...
... from an inert polymer with a unique split ... split septum caps for use with 384-well tall-chimney ... when used in conjunction with screw or clip-down ... pipetting equipment 384 septum caps may be ...
... Buffer is a unique alternative to ... (TRIS acetate-EDTA) electrophoresis buffers. Bionic Buffer ... rapid running times, and high-resolution band ... gel electrophoresis after dilution to working ...
Biology Products: