Navigation Links
Hotspots tamed by BEAST
Date:1/19/2011

The secrets behind the mysterious nano-sized electromagnetic "hotspots" that appear on metal surfaces under a light are finally being revealed with the help of a BEAST. Researchers at the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a single molecule imaging technology, dubbed the Brownian Emitter Adsorption Super-resolution Technique (BEAST), that has made it possible for the first time to directly measure the electromagnetic field inside a hotspot. The results hold promise for a number of technologies including solar energy and chemical sensing.

"With our BEAST method, we were able to map the electromagnetic field profile within a single hotspot as small as 15 nanometers with an accuracy down to 1.2 nanometers, in just a few minutes," says Xiang Zhang, a principal investigator with Berkeley Lab's Materials Sciences Division and the Ernest S. Kuh Endowed Chaired Professor at the University of California (UC), Berkeley. "We discovered that the field is highly localized and, unlike a typical electromagnetic field, does not propagate through space. The field also has an exponential shape that rises steeply to a peak and then decays very fast."

Zhang, who directs the Center for Scalable and Integrated NanoManufacturing (SINAM), a National Science Foundation Nano-scale Science and Engineering Center at UC Berkeley, is the corresponding author of a paper on this research that appears in the journal Nature under the title "Mapping the Distribution of Electromagnetic Field Inside a 15nm Sized Hotspot by Single Molecule Imaging." Co-authoring the paper with Zhang were Hu Cang, Anna Labno, Changgui Lu, Xiaobo Yin, Ming Liu and Christopher Gladden.

Under optical illumination, rough metallic surfaces will become dotted with microscopic hotspots, where the light is strongly confined in areas measuring tens of nanometers in diameter, and the Raman (inelastic) scattering
'/>"/>

Contact: Xiang Zhang
xiang@berkeley.edu
510-225-8559
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Prime Health Network and Its Patients Thrive in Tough Economic Times on the InstaMed Network
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Hotspots tamed by BEAST
(Date:1/23/2015)... Biofertilizers stimulate microbial activities in soil. These microorganisms generate ... activities in the soil or in the rhizosphere. The ... on reducing environmental pollution and on reducing the usage ... the bio fertilizers market with analysis and forecasting of ...
(Date:1/22/2015)... Md. (PRWEB) January 22, 2015 ... its new UV-1280 multipurpose UV-visible spectrophotometer. Offering wavelength ... high-quality instrument is ideal for applications in a ... life science. , The user-friendly UV-1280 enables intuitive ...
(Date:1/22/2015)... 21, 2015 Cambridge Semantics, the leading provider ... announced that 2014 was a record-breaking year across the board ... the Anzo Smart Data Platform and our Smart Data solutions, ... from diverse data which led to record growth for the ...
(Date:1/22/2015)... California (PRWEB) January 22, 2015 Pipette.com ... Offer to their comprehensive portfolio of Eppendorf products. ... customers to purchase a Centrifuge 5424/5424 R and receive ... of either Eppendorf Research plus or Eppendorf Reference 2 ...
Breaking Biology Technology:Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 2Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 3Biofertilizers Market Expected to Reach $1,649.7 Million by 2019 - New Report By MarketsandMarkets 4Shimadzu’s New Monitored Single-Beam UV-Vis Spectrophotometer Offers Comprehensive Measurement Options in a Compact Body 2Cambridge Semantics Announces Record Results for 2014 2Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2
... --- For more than 15 years, carbon nanotubes ... Researchers have conceived applications for nanotubes ranging from ... should, in theory, give them mechanical and electrical ... , Unfortunately, theory and experiments have failed to ...
... CHAPEL HILL, N.C., Aug. 15 The ... divided into multiple market,segments. In this challenging ... increasingly complex organizational and,decision-making structures to effectively ... only being influenced by medical professionals,focused on ...
... HARBIN, China, Aug. 15 /Xinhua-PRNewswire-FirstCall/ -- China Kangtai,Cactus ... a,vertically integrated grower, developer, manufacturer and marketer of ... today record,second quarter results for the period ended ... million, a 34.9% increase compared to $3.7 million,in ...
Cached Biology Technology:True properties of carbon nanotubes measured 2True properties of carbon nanotubes measured 3U.S. Hospital Sales Opportunities Maximized Through Functional Optimization 2China Kangtai Cactus Biotech Announces Record Second Quarter Results 2China Kangtai Cactus Biotech Announces Record Second Quarter Results 3
(Date:1/22/2015)... , Jan. 15, 2015  BellBrook Labs, a ... discovery, announced the launch of a TR-FRET (time ... company,s Transcreener UDP Assay, a high throughput screening ... new assay will allow for sensitive detection of ...
(Date:1/22/2015)... , Jan. 21, 2015  Analyst Report Issued by Small Cap ... report showed that planet-wide, transactions at merchants on the leading ... total number of credit, debit, and prepaid cards reached 6.54 ... victims of fraudulent card usage in 2012, and credit and ...
(Date:1/22/2015)... 22, 2015 Infinisource has launched its new NXG series ... The G2 sets a higher standard for collecting attendance and ... solution. With plug-and-play installation, touch screen interface and seamless connection ... robust time collection solution for the small to mid-size employer. ...
Breaking Biology News(10 mins):BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2Infinisource's NXG series sets new time clock standard 2
... of speech in humans. Crucial for the process are acoustic ... to a disturbed vocal development both in humans and in ... they either develop no or a rudimentary form of human ... are removed from their parents and are raised apart from ...
... can be embarrassing, but a new study suggests that ... Turku, Finland, interviewed more than three thousand men - ... younger brothers - about the first time they had ... had suffered from erectile dysfunction and premature ejaculation at ...
... Metrology Laboratory in the United Kingdom and the University of ... how the proportions of isotopes in a chemical element (atoms ... numbers of neutrons) vary throughout the length of a single ... these methods to track the geographical movements of people, including ...
Cached Biology News:A bad performance is better than no performance at all 2Sulphur in just one hair could blow a terrorist's alibi 2Sulphur in just one hair could blow a terrorist's alibi 3
... DW4 liquid handling system from Molecular Devices ... in one instrument. The system handles a ... plate washing96-, 384- and 1536-welland is the ... DW4 has been optimized to dispense from ...
... Radiochemical Purity is >95%NEN Radiolabeled Ligands\n\nReceptor-related research ... availability of new radiolabeled ligands selected to ... a wide range of products and services ... over 400 state-of-the-art radioligands. If you do ...
... Radiolabeled Ligands\n\nReceptor-related research has long been enabled ... ligands selected to keep pace with new ... products and services for receptor research and ... If you do not find exactly what ...
... UltraPure Agarose and SYBR Safe DNA Gel Stain ... Saves money versus buying these same products separately ... alternative to ethidium bromide ... Agarose resolves DNA and RNA fragments from 100 bp ...
Biology Products: