Navigation Links
Gold nanostar shape of the future
Date:11/6/2008

DURHAM, N.C. Rods, cones, cubes and spheres move aside. Tiny gold stars, smaller than a billionth of a meter, may hold the promise for new approaches to medical diagnoses or testing for environmental contaminants.

While nanoparticles have been the rage across a wide spectrum of sciences, a new study by Duke University bioengineers indicates that of all the shapes studied to date, stars may shine above all the rest for certain applications.

The key is light, and how that light reflects off the particles. Compared to the other shapes, nanostars can dramatically enhance the reflected light, the Duke scientists found. This increases their potential usefulness as a tracer, label, or contrast agent.

Since the researchers also found that the size and shape of the nanostars affect the spectrum of reflected light, they believe that these tiny nanostars can also be "tuned" to identify particular molecules or chemicals.

"To our knowledge, this is the first report of the development and use of gold nanostars as labels for molecular detection and description of their controlled synthesis with different sizes and shapes" said Chris Khoury, lead author of a paper published on-line in the Journal of Physical Chemistry. Khoury is a graduate student in biomedical engineering working in the laboratory of senior researcher Tuan Vo-Dinh, R. Eugene and Susie E. Goodson Distinguished Professor of Biomedical Engineering and director of The Fitzpatrick Institute for Photonics at Duke.

In the Duke experiments, the nanostars were used in conjunction with a phenomena first described in the 1970s known as surface-enhanced Raman scattering (SERS). When light, usually from a laser, is shined on a sample, the target molecule vibrates and scatters back in its own unique light, often referred to as the Raman scatter. However, this Raman response is extremely weak. When the target molecule is coupled with a metal nanoparticle or nanostruct
'/>"/>

Contact: Richard Merritt
richard.merritt@duke.edu
919-660-8414
Duke University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Superbugs, shapes and nanotechnology
2. Sol-gel inks produce complex shapes with nanoscale features
3. Halogen Customers Shape Industry-Leading Employee Performance and Talent Management Solution
4. Foldable and stretchable, silicon circuits conform to many shapes
5. ShapeGrabber and Nikon Instruments Inc. Announce Distribution Agreement
6. Tiny refrigerator taking shape to cool future computers
7. Metals shape up with a little help from friends
8. UltraShape Appoints Assaf Eyal as President & CEO
9. Amoena Helps Women Re-shape Their Lives After Breast Cancer Surgery
10. Novel Angiogenic Drugs, Including a Future Blockbuster from Genzyme, Could Revolutionize Treatment of Peripheral Arterial Disease
11. Advancements in Population Age and Technology Drive Future of Orthopedic Materials Market
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... EvoDerma ’s NOOME Anti-Aging Motion has been upgraded ... with a second treatment cup to help prevent and smooth ... is thinner on the edges for a softer contact with ... uneven surfaces on the face, neck and décolleté. Choose to ... areas such as the cheeks and neck, or opt for ...
(Date:7/10/2014)... 10, 2014  Franciscan St. Anthony Health-Crown ... for respiratory monitoring outside the operating room, ... in embracing state-of-the-art patient safety technology. ... breathing and can alert medical caregivers when ... amount of carbon dioxide the patient is ...
(Date:7/10/2014)... 2014  Kainos Capital, a firm specializing in acquiring ... it has acquired the Slim-Fast brand from Unilever. Unilever ... of the transaction were not disclosed. Slim-Fast ... that markets ready-to-drink shakes, powders, bars and snacks to ... and in the United Kingdom ...
(Date:7/10/2014)... , July 10, 2014 Research and ... of the "International Photonic Integrated Circuit (Monolithic ... to 2019" report to their offering. ... The concept of photonic integration traces its roots ... The promise of photonic integration went unexplored and ...
Breaking Biology Technology:Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Franciscan St. Anthony Health-Crown Point Underscores Patient Safety Commitment Through Expanded Use of Capnography 2Kainos Capital Acquires Slim-Fast From Unilever 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2
... Nov. 20 Amicus Therapeutics,(Nasdaq: FOLD ) today ... will present a corporate update at the Lazard Capital,Markets ... Tuesday,November 27th at 11:30 am ET at The New ... of the presentation will be available to all,interested parties ...
... Massachusetts and RAMBOUILLET, France,November 20 ... model-based,vision software for musculoskeletal radiography, and ... High Resolution Digital Radiology for osteoarticular,imaging, ... joint and bone,tissues, announced today the ...
... Completion of Strategic Acquisition Reflected in Q3 Results, ... Board: ECTE) today announced financial results for the,third quarter ... 30,2007, net loss was $8,677,000 or $.70 per share, ... period in 2006. For the nine months ended,September 30, ...
Cached Biology Technology:Amicus Therapeutics to Present at the Lazard Capital Markets Fourth Annual Healthcare Conference 2Amicus Therapeutics to Present at the Lazard Capital Markets Fourth Annual Healthcare Conference 3Rapid Quantification of Osteoarthritis With a Novel, Office-Based, High-Resolution Digital Imaging Device 2Echo Therapeutics Reports Third Quarter 2007 Results 2Echo Therapeutics Reports Third Quarter 2007 Results 3Echo Therapeutics Reports Third Quarter 2007 Results 4Echo Therapeutics Reports Third Quarter 2007 Results 5Echo Therapeutics Reports Third Quarter 2007 Results 6
(Date:7/11/2014)... Mills Canyon fire started near the City of Entiat ... local resources, the fire quickly grew to over 1,000 ... of the fire is under investigation by the Washington ... working with existing local resources in developing fire control ... Service (USFS), Washington State Department of Natural Resources, (WA ...
(Date:7/11/2014)... Institute of Standards and Technology (NIST) need a ... they often prove that necessity is truly the ... for M. Lorna De Leoz and Stephen Stein, ... glycomics. Glycomics is the study of the abundant, ... to proteins and lipids and influence cellular processes, ...
(Date:7/11/2014)... Researchers from Ume University, Sweden, have explored two ... the reaction sequence leading to the formation of ... been published in the scientific journal Nature ... improving present day synthetic catalysts for water oxidation, ... devices for the direct storage of solar energy ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2
... release is available in Spanish . , ... processes, but also those that do not. This is why ... healthy cells. With this aim in mind, a team from ... of the C1P molecule. Today two types of ...
... N.Y. New tires allow race cars to take tight ... similar advantages: They are not necessary for basic flight but ... "To escape a predator, you don,t have to be fast, ... a world authority on animal behavior, ecology and evolution and ...
... pollution has already spurred public health officials to advise eating ... in a warmer world. So suggests a paper that ... . Sue Natali, a postdoctoral associate in botany at ... mercury levels in soils under trees growing in air enriched ...
Cached Biology News:The quest for specific anti-inflammatory treatment 2The quest for specific anti-inflammatory treatment 3Hind wings help butterflies make swift turns to evade predators, study finds 2To climate-change worries, add 1 more: Extended mercury threat 2To climate-change worries, add 1 more: Extended mercury threat 3
... is a new product number, ... product number. If showing no ... the old Sigma-Aldrich number (Z71,350-3) ... assistance. ID clarifier: rack holds ...
... GX-1000 3-D Shaker , ,Product Information ... of the GyroTwister GX-1000 is extremely efficient, ... general mixing as well as staining gels, ... continuously adjustable across a broad range. A ...
...
... 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 ...
Biology Products: