Navigation Links
Nano spiral staircases modify light
Date:3/14/2012

The small clearance between the particles ensures that the gold particles of a DNA strand work in unison, thereby amplifying the interactions many fold. Professor Alexander O. Govorov, theoretical physicist at the Ohio State University in Athens, USA, had predicted that the effect should depend on the spacing, size and composition of the metal particles. Using the DNA origami method, the Munich physicists built up nanostructures in which they varied these parameters.

The results of these experiments confirm the predictions of their colleagues in every regard: Aqueous solutions of right-handed and left-handed nano spiral staircases differ visibly in their interactions with circular polarized light. Spiral staircases with large particles show a significantly stronger optical response than those with small particles. The chemical composition of the particles also had a large effect: When the gold particles were coated with a layer of silver, the optical resonance shifted from the red to the shorter wave blue domain.

By combining theoretical calculations and the possibilities of DNA origami, the researchers are now able to produce nano-optical materials with precisely specified characteristics. Professor Tim Liedl describes the path the research might follow: "We will now investigate whether we can use this method to influence the refraction index of the materials we manufacture. Materials with a negative refractive index could be used to develop novel optical lens systems so-called super lenses."


'/>"/>
Contact: Dr. Andreas Battenberg
battenberg@zv.tum.de
49-892-891-0510
Technische Universitaet Muenchen
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Spiral Biotech to Introduce New Autoplate Spiral Plating System at ASM General Meeting in May
2. Charging makes nano-sized electrodes swell, elongate and spiral
3. Sangamos Zinc Finger Nuclease Technology Used to Efficiently Modify Human Stem Cells
4. LX211 highlighted as potential disease modifying therapy for noninfectious uveitis
5. CEL-SCI Collaborators Present Data Suggesting That LEAPS Technology Has Ability to Modify Immune Response
6. The Michael J. Fox Foundation Announces $1.5 Million in Funding to Advance Development of Drug Targets for Disease-Modifying Parkinsons Disease Treatments
7. Amgen and FDA Agree to Modify Nplate® (Romiplostim) Risk Evaluation and Mitigation Strategy
8. Informed Medical Communications Highlights Opportunity in Revised PhRMA Code
9. DOE JGI Director Eddy Rubin highlights the genomics of plant-based biofuels in the journal Nature
10. Neuralstem Reports Second Quarter Financial Results and Highlights
11. Light touch: Controlling the behavior of quantum dots
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nano spiral staircases modify light
(Date:8/28/2014)... converters are important devices in spintronics, an electronic ... of electrons but also on their spin and ... of electric into magnetic signals and vice versa. ... from the Institute of Physics at Johannes Gutenberg ... UK, Prague, and Japan, has for the first ...
(Date:8/28/2014)... WA (PRWEB) August 28, 2014 Sterlitech ... Filtration’s polymeric membranes to its stable of products ... available molecular weight cut-offs and include membrane filters with ... steady increase in customer demand for our membrane process ... greater variety of flat sheet membranes,” explains Sterlitech President ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 Earlier this ... University in partnership with the U.S. Air Force ... biofuel. The results indicated that this type of fuel ... feedstock and will be important to America’s Eco friendly ... now has a mandate to become independent of foreign ...
(Date:8/27/2014)... Austin, TX (PRWEB) August 27, 2014 ... $6 million in Series B funding and secured Otter ... and investment capital will accelerate commercialization of GGI’s Agriplier™ ... multiple crop types. , “Since our first meeting, ... commitment to the biological product space,” said Alan Sobba, ...
Breaking Biology Technology:A new, tunable device for spintronics 2A new, tunable device for spintronics 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 2Green & Grow Inc. Secures $6M Series B Funding from Otter Capital 3
... screening and selection process for the next conferences demonstrating class ... the class has been identified, and Ill be busy until ... number of new products introduced at Februarys DEMO to 70. ... to get a sense of significant issues and trends that ...
... , Diseases like Parkinson's, Alzheimer's, juvenile diabetes ... including my own. Stem cell research, which is being ... some of these diseases. But these cures will continue to ... in the way of the vital work of scientists. , ...
... Wallace H. Coulter Foundation , named for the late ... at UW-Madison a five-year, $580,000 annual grant for pursuing ... research to get it ready for applications in the ... a decision will be made on continuing aid by ...
Cached Biology Technology:DEMO 2006: A sea change is coming 2DEMO 2006: A sea change is coming 3Standing up for stem cell research 2Standing up for stem cell research 3UW Biomedical Engineering awarded $2.9 million research grant 2
(Date:8/28/2014)... new method for measuring and imaging how quickly blood ... better understand how drug abuse affects the brain, which ... and lead to better treatment options for recovering drug ... researchers from Stony Brook University in New York, USA ... today in The Optical Society,s (OSA) open-access journal ...
(Date:8/28/2014)... . Cars, planes ... of sophisticated assembly lines. Mobile assembly carriers, on to which ... assembly lines. In the case of a car body, the ... a precise spatial and chronological sequence, resulting in a complete ... of such an assembly line at molecular level has been ...
(Date:8/28/2014)... Oregon, northern California, and Alaska totaled 515 million board ... an increase of more than 10 percent compared to ... Pacific Northwest Research Station reported today. During this same ... to 247 million board feet. , The total value ... percent to $390 million in the same quarter, while ...
Breaking Biology News(10 mins):This is your brain's blood vessels on drugs 2This is your brain's blood vessels on drugs 3Nanoscale assembly line 2Nanoscale assembly line 3West coast log exports up, lumber exports down in second quarter of 2014 2
... 2011A compact, self-contained, automated system for surveillance and screening ... infectious diseases is a step closer to reality, thanks ... University of California Los Angeles School of Public Health, ... LANL and the UCLA School of Public Health will ...
... New Haven, Conn. Triceratops and Torosaurus have ... a new discovery traces the giants, family tree further back ... reigned long before its more well-known descendants, making it the ... species, called Titanoceratops after the Greek myth of ...
... is available in French and German . ... of public attention. In particular silver nanoparticles are being investigated ... regulatory authorities. The assumption behind this interest is that they ... Bernd Nowack and Harald Krug, together with Murray Heights of ...
Cached Biology News:LANL to certify automated influenza surveillance system 2LANL to certify automated influenza surveillance system 3Newly discovered dinosaur likely father of Triceratops 2Nanosilver: A new name -- well-known effects 2Nanosilver: A new name -- well-known effects 3
...
... for serial preparation of ... including cytosol/particulate/cytoskeleton/nuclear fractions from ... fractions can directly be ... such as 2-D gel/Western ...
Wheat Germ Agglutinin (WGA) PS SPA Imaging Bead, 2 g. Category: Leadseeker Beads....
... steadylite plus assay system offers ... sensitivity, Designed for batch-processing systems, ... higher density microplates such as ... free, Convenient storage conditions ( ...
Biology Products: