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

There was a lot of excitement a few years ago following the discovery of the DNA origami technique. The approach could be used to build nanoparticles of a given shape and size. However, real applications, such as nano-tweezers, remained out of reach. An international team of researchers led by Professor Tim Liedl of the Ludwig-Maximillians-Universitaet Muenchen and Professor Friedrich Simmel of the Technische Universitaet Muenchen have now succeeded in building nanoparticles using optically active DNA building blocks that can be used to modify light in very specific ways.

Coupling light and nanostructures may help significantly reduce the size of optical sensors for medical and environmental applications, while at the same time making them more sensitive. However, the size of a light wave stretching out over 400 to 800 nanometers is gigantic in comparison to nanostructures of only a few nanometers. Yet in theory, when tiniest structures work together in very specific ways, even small objects can interact very well with light. Unfortunately it is not possible to produce the requisite three-dimensional structures with nano-scale precision in sufficient quantities and purity using conventional methods.

"With DNA origami, we have now found a methodology that fulfills all of these requirements. It makes it possible to define in advance and with nanometer precision the three-dimensional shape of the object being created," says Professor Friedrich Simmel, who holds the Chair for Biomolecular Systems and Bionanotechnology at the TU Muenchen. Programmed solely using the sequence of basic building blocks, the nano-elements fold themselves into the desired structures." Friedrich Simmel's team successfully built nano spiral staircases 57 nanometers high and 34 nanometers in diameter with 10 nanometer gold particles attached at regular intervals.

On the surface of the gold particles the electrons react with the electromagnetic field of the light.
'/>"/>

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:7/28/2014)... (PRWEB) July 28, 2014 Proove ... medicine, will be exhibiting data and research conducted through ... International Spine Intervention Society’s (ISIS) 22nd Annual Scientific ... at the Hyatt Regency, in Orlando, Florida. ... and clinical competence of physicians who care for patients ...
(Date:7/28/2014)... 28, 2014 According ... Market by Products (Consumables, Instruments, Services), Methods (Phenotypic, Genotypic), Applications (Pharmaceutical, ... (Detection, Characterization) - Global Forecasts to 2019" ... is estimated at $896.5 Million in 2014 ... by 2019, growing at a CAGR of ...
(Date:7/28/2014)... , July 28, 2014   Propeller Health ... disease, announced the hire of Brad Towle ... will be responsible for driving the company,s sales growth, ... experience in healthcare, and specifically his past role in ... to the company at this pivotal time in the ...
(Date:7/28/2014)... 28, 2014 The global market for ... 2020, according to a new study by Grand View ... demand for effective vaccines and drugs in an attempt ... needs is expected to drive market demand over the ... agricultural productivity via the use of genetically engineered seeds ...
Breaking Biology Technology:Proove Biosciences Exhibits Industry Leading Data and Research at International Spine Intervention Society’s 22nd Annual Scientific Meeting 2Microbial Identification Market worth $1,194.1 Million by 2019 2Microbial Identification Market worth $1,194.1 Million by 2019 3Propeller Health Hires Brad Towle as Senior Vice President of Business and Client Development 2Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 2Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 3Global Biotechnology Market Worth $604.40 Billion by 2020: Grand View Research, Inc 4
... from desktops, laptops, MP3 players and smartphones are a ... digital audio (or video) programs are delivered ... to a range of devices for on-demand listening. ... and consumers for a variety of reasons providing ...
... Representatives , for the second time in the past two years, ... restrictions on federal funding for human embryonic stem cell research. , ... override a promised presidential veto of the Stem Cell Research ... push, the White House reiterated its opposition to using federal taxpayer ...
... plans to erect as many as five more buildings on ... about needs well beyond its existing base of 2,500 employees, ... administrative officer, said the company anticipates adding 1,500 more individual ... 2,500. In addition, there remains plenty of room on the ...
Cached Biology Technology:Podcasts time, place, and player shifted media 2Podcasts time, place, and player shifted media 3Podcasts time, place, and player shifted media 4House passes bill to lift stem cell funding restrictions 2Epic Systems will build well beyond current staff size 2
(Date:7/28/2014)... drugs already approved by the U.S. Food and Drug ... growth of certain bacterial pathogens inside human cells, including ... fever. The findings, published in mBio , the ... demonstrate a new way of identifying non-antibiotic drugs that ... A handful of drugs on the list inhibit the ...
(Date:7/28/2014)... of researchers led by the University of Arizona has ... genetic information will enhance scientists, and agriculturalists, understanding of ... enable the development of new rice varieties that are ... help solve global hunger challenges. , The paper, "The ... and evidence for independent domestication," was published online in ...
(Date:7/28/2014)... MIT professor John Essigmann and colleagues from the University of ... thought if they could induce the virus to mutate uncontrollably, ... a strategy that our immune system uses against many ... caused HIV to mutate at an enhanced rate, as expected. ... a small clinical trial reported in 2011. In a new ...
Breaking Biology News(10 mins):New route to identify drugs that can fight bacterial infections 2Generating a genome to feed the world: UA-led team sequences African rice 2Generating a genome to feed the world: UA-led team sequences African rice 3Generating a genome to feed the world: UA-led team sequences African rice 4Forced mutations doom HIV 2Forced mutations doom HIV 3Forced mutations doom HIV 4
... neuroscience for the first time points to a developmental ... Timothy syndrome, and observed defects in brain wiring, according ... published online yesterday in Nature Neuroscience . These ... underlying intellectual disability and many other brain disorders. ...
... - It is perhaps impossible to overstate the importance of ... frequently mutated gene in human tumors. p53 keeps pre-cancerous cells ... senescent aging at the cellular level. Loss of p53 ... make mutant or damaged cells die or stop growing. ...
... German . Animals have developed a variety ... habitats. It is known, for example, that many urban birds ... the low-frequency sound of road traffic. However, as scientists from ... a useful side effect. The real reason for this behaviour ...
Cached Biology News:New discovery in autism-related disorder reveals key mechanism in brain development and disease 2Cancer suppressor gene links metabolism with cellular aging 2Cancer suppressor gene links metabolism with cellular aging 3Clamorous city blackbirds 2
Request Info...
RayBio Human Chemokine Antibody Array 1.1 (8) with Accessory, detects 38 chemokine factors (for lysate) Class: Antibody Array Products Product Group: Antibody Array...
... CultureWell cell culture chambered coverslips ... cells for staining and imaging. ... silicone gaskets with standard optical-quality ... and ready to use. Preassembled ...
Adhesive seal-tab, for HybriWell™ hybridization sealing system *set of 400*...
Biology Products: