Navigation Links
Researchers create laser the size of a virus particle
Date:11/5/2012

A Northwestern University research team has found a way to manufacture single laser devices that are the size of a virus particle and that operate at room temperature. These plasmonic nanolasers could be readily integrated into silicon-based photonic devices, all-optical circuits and nanoscale biosensors.

Reducing the size of photonic and electronic elements is critical for ultra-fast data processing and ultra-dense information storage. The miniaturization of a key, workhorse instrument -- the laser -- is no exception.

The results are published in the journal Nano Letters.

"Coherent light sources at the nanometer scale are important not only for exploring phenomena in small dimensions but also for realizing optical devices with sizes that can beat the diffraction limit of light," said Teri Odom, a nanotechnology expert who led the research.

Odom is the Board of Lady Managers of the Columbian Exposition Professor of Chemistry in the Weinberg College of Arts and Sciences and a professor of materials science and engineering in the McCormick School of Engineering and Applied Science.

"The reason we can fabricate nano-lasers with sizes smaller than that allowed by diffraction is because we made the lasing cavity out of metal nanoparticle dimers -- structures with a 3-D 'bowtie' shape," Odom said.

These metal nanostructures support localized surface plasmons -- collective oscillations of electrons -- that have no fundamental size limits when it comes to confining light.

The use of the bowtie geometry has two significant benefits over previous work on plasmon lasers: (1) the bowtie structure provides a well-defined, electromagnetic hot spot in a nano-sized volume because of an antenna effect, and (2) the individual structure has only minimal metal "losses" because of its discrete geometry.

"Surprisingly, we also found that when arranged in an array, the 3-D bowtie resonators could emit l
'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. New England Biolabs Introduces Polbase, an Information Repository of Scientific Data for Polymerase Researchers
2. In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
3. Multidisciplinary team of researchers develop world’s lightest material
4. Researchers shrink tumors and minimize side effects using tumor-homing peptide to deliver treatment
5. Innovative MetaMorph® NX Software Shatters Barriers Between Researchers and Image Analysis Goals with Exclusive Visual Workflow
6. UCLA researchers demonstrate fully printed carbon nanotube transistor circuits for displays
7. Penn and Brown researchers demonstrate earthquake friction effect at the nanoscale
8. Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public
9. Researchers develop one of the worlds smallest electronic circuits
10. MU researchers identify key plant immune response in fight against bacteria
11. Researchers realize high-power, narrowband terahertz source at room temperature
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... November 20, 2014 The November 2014 ... as an open access journal featuring the following articles:, ... proteins to preserve photoresponsiveness in the retina , ... in situ hybridization using chromogenic substrates in zebrafish , ... RNA, and protein electrophoresis , Nuclear LC3-positive ...
(Date:11/21/2014)... SAN DIEGO , Nov. 20, 2014 /PRNewswire/ ... patient has been dosed in its Phase 1 ... and cisplatin for the treatment of malignant pleural ...  Polaris Group is conducting clinical trials on ADI-PEG ... other agents, for the treatment of several other ...
(Date:11/18/2014)... FL (PRWEB) November 17, 2014 ... point-of-care diagnostic tests – today announces its third ... and Prevention’s (CDC) Get Smart About Antibiotics Week ... Week is a national campaign designed to highlight ... health departments, and non-profit and for-profit partners to ...
(Date:11/18/2014)... 18, 2014 American Process Inc. ... formed a partnership with researchers at Georgia Institute ... Technology, and the USDA’s Forest Products Laboratory to ... nanocellulose. Nanocellulose is a rapidly emerging high performance ... project is to replace heavy steel structures within ...
Breaking Biology Technology:BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 2BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 3Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 2American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 3
... 3 /PRNewswire-FirstCall/ - OncoGenex Pharmaceuticals, Inc. (NASDAQ: OGXI ) announced today ... at the 9th Annual Needham Healthcare Conference on June 10 at ... New York City . , , ... webcast will be available through the Investor Relations page of the OncoGenex Web ...
... China , June 3 /PRNewswire-Asia-FirstCall/ -- Tianyin,Pharmaceutical Co., Inc. (NYSE Amex: TPI ), ... at the Company,s website: , , , ... , , ... , , ...
... Caliper Life Sciences, Inc. (Nasdaq: CALP ) today announced that its ... on Friday, June 11 at 12:45 p.m. EDT . ... on the company,s business. The live webcast can be accessed at ... , , ...
Cached Biology Technology:OncoGenex Pharmaceuticals to Present at the 9th Annual Needham Healthcare Conference 2Tianyin Corporate Presentation Updated 2
(Date:11/6/2014)... team of Florida State University biologists could lead to ... and survive environmental swings such as droughts or floods. ... the journal The Plant Cell , sheds light ... is organized in a cell and how plants regulate ... and others are turned off. , "If you understand ...
(Date:11/5/2014)... associate professor of biology in the UTSA College ... the nation selected to receive a two-year $300,00 ... Exploratory Research (EAGER). The funding supports President Obama,s ... to create new technology that will demystify complex ... behaviors in neuroscience are broken into the interactions ...
(Date:11/4/2014)... amount of death at the right time might actually ... research that could help in understanding animal populations, pest ... a paper in the journal Trends in Ecology ... colleagues conclude that the kind of positive population effect ... or mortality, depends on the size and developmental stage ...
Breaking Biology News(10 mins):Maize analysis yields whole new world of genetic science 2UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3When less is more: Death in moderation boosts population density in nature 2
... tiny pest threatening the staple diet of millions ... project announced today, bringing together plant experts from ... Dr Peter Urwin from the University of Leeds ... through the 7 million Sustainable Agriculture Research for ...
... is availabe in Spanish . , ANN ... the National Institute on Aging have produced the largest ... a treasure trove offering new insights into early migrations ... astronomers who build ever-larger telescopes to peer deeper into ...
... between two points, but it isnt necessarily the fastest ... when terrain is not level, and now American and ... a zigzag course provides the most efficient way for ... I think zigzagging is something people do intuitively, said ...
Cached Biology News:Purging the plantain pests in Africa 2U-M researchers release most detailed global study of genetic variation 2U-M researchers release most detailed global study of genetic variation 3In the race to the top, zigzagging is more efficient than a straight line 2
... adamanteus venom Description: Phosphodiesterase I ... in studying nucleic acid structure ... hydrolyzes 5'-mononucleotides from 3'-hydroxy-terminated ribo-oligonucleotides ... I cleaves ADP-ribosylated proteins at ...
Economical and manually filled LN2 vacuum insulated storage container offers high capacity and low nitrogen consumption while offering convenient storage of samples....
... determination of digitonin and digoxin. Physical form: Lyophilized ... and 0.06% NaCl Preparation Note: Sodium iodide ... Res. Commun., 19, 755 (1965). Unit Definition: ... phosphorus from ATP per min at pH 7.4 ...
... potent TURBO DNase (patent pending) in the TURBO ... DNA removal capabilities. TURBO DNase is a recombinant, ... more efficient than wild type DNase I in ... DNase binds DNA substrates 6-fold more tightly than ...
Biology Products: