Navigation Links
Designer lights from the physics lab
Date:3/17/2012

old particles, on which the particles can be arrayed like beads on a string that wraps helically around the cylinder.

"The precision and yield of the expected structure is extremely high, and the degree of control achieved is greater than in any previous attempt to pattern metallic nanoparticles in a defined geometry," says coauthor Professor Friedrich Simmel, a physicist at the Technical University of Munich. By varying the size, disposition and composition of the nanoparticles or altering other features of the water-soluble structures, the investigators can customize the impact of the material on light rays passing through it.

For instance, by arranging the gold particles in right or left-handed helices, the properties of the transmitted light are altered accordingly. The magnitude of the optical response was found to be markedly dependent on the size of the particles, and their precise chemical nature also has a significant influence on how they interact with incident light. Thus, if the gold particles are coated with silver, the position of the optical resonance is shifted from the red to the blue range of the spectrum.

The phenomenon of circular dichroism can be used to characterize the optical activity of materials. It is measured using two light beams of defined wavelength which are circularly polarized in opposite senses and modulated in different ways by passage through the material. When the response of a given sample of the metamaterial was determined at various wavelengths, the results were found to agree with calculations based on a theoretical model. Hence, the model can be used to design materials that modulate light in specific ways. "We will now test whether we can also alter the refractive index of our materials," says Liedl. "Materials with a negative index of refraction could, for instance, serve as the basis for novel optical lens systems."(NIM/suwe)


'/>"/>

Contact: Dr. Kathrin Bilgeri
kathrin.bilgeri@lmu.de
49-892-180-6938
Ludwig-Maximilians-Universitt Mnchen
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Celebrity Designer Ty Pennington to Host 10th Annual ADHD Experts on Call Program
2. Angela Shen-Hsieh of Visual I
3. O Named to Board of Directors of AIGA: Oldest and Largest Membership Organization for Designers
4. Designer molecules being developed to fight disease
5. Designer nano luggage to carry drugs to diseased cells
6. Medical Device Designers Avoid the Pitfalls of Outsourcing Medical Tubing
7. Iowa State, Ames Lab physicist developing, improving designer optical materials
8. Designer probiotics could reduce obesity
9. From a flat mirror, designer light
10. Molecular graphene heralds new era of designer electrons
11. Informed Medical Communications Highlights Opportunity in Revised PhRMA Code
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... 16, 2014 The Activated Carbon ... which is why IBISWorld updated its original industry research ... benefit from an intensified focus on environmental policy. Over ... emission standards for power plants and a range of ... IBISWorld Industry Analyst Sarah Kahn, “a range of downstream ...
(Date:12/17/2014)... Once more, EMAAR has selected ... waste water treatment plant to phase one of BayLaSun, ... Two years ago Bioshaft successfully supplied and operated a ... residential towers with an occupancy of 900 residences. ... gallons per day and was signed on September 16th, ...
(Date:12/17/2014)... 2014  Vermillion, Inc. (NASDAQ: VRML ), ... announced the next step in its expanded strategy to ... with the naming of current Chief Operating Officer, ... while current Chairman of the Board and CEO ... These changes are effective January 1, 2015. ...
(Date:12/15/2014)... METTLER TOLEDO is pleased to announce ... V19 with PVM technology , is now available. ... measurement tool continuously captures high-resolution images under a ... automatically prepares a report pairing the most relevant ... changes. This compelling blend of high resolution images ...
Breaking Biology Technology:Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 2Activated Carbon Manufacturing in the US Industry Market Research Report Has Been Updated from IBISWorld 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4New Real-Time In Situ Probe-Based Video Microscope from METTLER TOLEDO 2
... ... Calibration Free Supersaturation Assessment and Control for the Development and Optimization of Crystallization Processes, ... ATR-FTIR spectra for the production and control of qualitative supersaturation trajectories. , ... (PRWEB) October 9, 2009 -- ...
... PALO ALTO, Calif., Oct. 8 CardioDx, a cardiovascular ... G. Lange, M.D., Ph.D., as Chairman of the company,s ... first and only gene expression test to quantify the ... with stable chest pain. , "Dr. Lange brings ...
... WORTH, Texas, Oct. 8 Guacamole is a little ... and deli sections introduce Wholly "Pink" Guacamole. Nielsen-ranked, top-selling ... row, donating 15 percent of proceeds from October "PINK" ... pretty-in-pink box is a reminder of Texas-Based Wholly,s support ...
Cached Biology Technology:Calibration Free Supersaturation Assessment and Control for the Development and Optimization of Crystallization Processes 2CardioDx Announces Appointment of Dr. Louis G. Lange as Chairman of the Board of Directors 2CardioDx Announces Appointment of Dr. Louis G. Lange as Chairman of the Board of Directors 3Grocery Produce Fighting for a Cause - Wholly 'Pink' Guacamole 2
(Date:12/10/2014)...  Wake Forest Baptist Medical Center today announced plans for ... Medicine. Funding for this $50 million capital project is ... publicly launched next summer. The medical ... series R.J. Reynolds Tobacco Company complex, adjacent to 525@vine ... with plans to be ready to welcome medical students ...
(Date:12/10/2014)... SUNNYVALE, California , December 9, 2014 /PRNewswire/ ... Integrate with ITN,s BCARD Platform ... secure, cloud-based enterprise meeting scheduling solutions for business-to-business ... International, the world leader in mobile near-field communication ... solutions.      (Logo: http://photos.prnewswire.com/prnh/20140612/691055) , ...
(Date:12/4/2014)... Fla. , Dec. 3, 2014  Crossmatch™, ... today announced that its DigitalPersona ® Pro ... readers have been deployed throughout First Bank branch ... South Carolina and Virginia. First ... Southern Pines, North Carolina , ...
Breaking Biology News(10 mins):Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3
... that the dawn of agriculture may have come with ... some 11,400 years ago, roughly a thousand years before ... in the region. The discovery dates domesticated figs to ... making the fruit trees the oldest known domesticated crop. ...
... combining the four bacterial surface proteins that generate ... the University of Chicago have created a vaccine ... drug-resistant strains of Staphylococcus aureus, the most common ... source of community-associated illness. , The vaccine ...
... June 15th issue of G&D, Dr. Marie-Louise Hammarskjold (UVA) ... the Wilms' Tumor 1 tumor suppressor. The Wilms' Tumor ... pathological human development, with known roles in kidney and ... , Dr. Hammarskjold and colleagues reveal that WT1 works ...
Cached Biology News:Tamed 11,400 years ago, figs were likely first domesticated crop 2MRSA vaccine shows promise in mouse study 2MRSA vaccine shows promise in mouse study 3
BD BaculoGold Max-XP Insect Cell Medium 1 Liter...
Performance, mycoplasma, virus, and endotoxin tested...
... Gel Loading Buffer is ... and tracking of DNA ... native polyacrylamide gels. This ... density sucrose which allows ...
... is the most effective ... PCR products. TOPO TA ... TOPO vectors are supplied ... topoisomerase I. This enables ...
Biology Products: