Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Magnetic, Luminescent Nanoparticles Set New Standard

Abstract:
Researchers at UC Davis have created a new type of nanoparticles that could be used in tests for environmental pollution or contamination of food products, and for medical diagnostics.

The particles, about 100 to 200 nanometers in size, are luminescent, magnetic and inexpensive to make, and can be tagged with antibodies. They are made up of a magnetic core of iron oxide or iron/neodymium/cobalt oxide coated in a shell of europium and gadolinium oxide. When stimulated with a laser, europium emits red light at a very specific wavelength.

Magnetic, Luminescent Nanoparticles Set New Standard

Davis, CA | Posted on January 25th, 2007

The nanoparticles can be manipulated with magnets and detected by fluorescence. They could also be labeled with other fluorescent labels in different colors, or used as part of an assay with other fluorescent labels. The built-in europium luminescence acts as an internal standard, making it easier to carry out accurate quantitative assays, said Ian Kennedy, professor of mechanical and aeronautical engineering and senior author on a paper describing the work.

The particles can also be coated with short pieces of DNA and used for genetic analysis. The team is exploring uses including testing for bioterrorism agents such as ricin or botulinum toxin in food and for genetic tests in cancer medicine.

The nanoparticles were made by spray pyrolysis, which involves mixing the raw material in a solvent and spraying it through a flame. The method is much cheaper than the techniques previously used for making similar particles, and can readily be scaled up to industrial production. It is already used in the chemical industry to make products such as fumed silica and carbon black.

Other authors on the paper are research specialist Dosi Dosev, Department of Mechanical and Aeronautical Engineering; postdoctoral researcher Mikaela Nichkova, research associate Shirley Gee and Professor Bruce Hammock, all of the Department of Entomology; and physics graduate student Randy Dumas and Kai Liu, associate professor of physics.

The researchers are establishing a company, Synthia LLC, to develop the technology further.

The paper is published online in the journal Nanotechnology and will appear in the Feb. 7, 2007, print issue of the journal. The work was funded primarily by the National Science Foundation and the Superfund Basic Research Program of the National Institute of Environmental Health Sciences.

####

About UC Davis
UC Davis is one of the nation's top public research universities and is part of the world's pre-eminent public university system. The campus is set in the heart of the Central Valley, close to the state capital and San Francisco Bay Area. As one of the last "small-town universities," we cherish our close relationships on campus and within the Davis community.

For more information, please click here

Contacts:
Ian Kennedy, Mechanical and Aeronautical Engineering
(530) 752-2796


Andy Fell, UC Davis News Service
(530) 752-4533

Copyright © UC Davis

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanomedicine

Leading bugs to the death chamber: A kinder face of cholesterol February 8th, 2016

UTHealth research looks at nanotechnology to help prevent preterm birth February 7th, 2016

Scientists take key step toward custom-made nanoscale chemical factories: Berkeley Lab researchers part of team that creates new function in tiny protein shell structures February 6th, 2016

Hepatitis virus-like particles as potential cancer treatment February 5th, 2016

Discoveries

Canadian physicists discover new properties of superconductivity February 8th, 2016

Leading bugs to the death chamber: A kinder face of cholesterol February 8th, 2016

The iron stepping stones to better wearable tech without semiconductors February 8th, 2016

Graphene is strong, but is it tough? Berkeley Lab scientists find that polycrystalline graphene is not very resistant to fracture February 7th, 2016

Announcements

Canadian physicists discover new properties of superconductivity February 8th, 2016

Leading bugs to the death chamber: A kinder face of cholesterol February 8th, 2016

From allergens to anodes: Pollen derived battery electrodes February 8th, 2016

The iron stepping stones to better wearable tech without semiconductors February 8th, 2016

Food/Agriculture/Supplements

Scientists have put a high precision blood assay into a simple test strip: Researchers have developed a new biosensor test system based on magnetic nanoparticles February 3rd, 2016

Herbal Extracts Applied to Synthesize Titanium Dioxide Nanoparticles January 28th, 2016

Antibacterial Nanocomposites Designed in Iran for Foodstuff Packaging January 20th, 2016

HSI 2016 | Hyperspectral Imaging and Applications conference is announced January 13th, 2016

Environment

Scientists have put a high precision blood assay into a simple test strip: Researchers have developed a new biosensor test system based on magnetic nanoparticles February 3rd, 2016

Herbal Extracts Applied to Synthesize Titanium Dioxide Nanoparticles January 28th, 2016

FLEXcon shares insights on developments and safety guidelines in nanotechnology: FLEXcon hosted New England Nanotechnology Association event, discussing latest industry activities and innovations January 25th, 2016

Highly efficient heavy metal ions filter January 25th, 2016

Human Interest/Art

Rice to enter first international nanocar race: Five teams will participate in October 2016 event in France December 15th, 2015

Bionic liver micro-organs explain off-target toxicity of acetaminophen (Tylenol): Israeli-German partnership aims to replace animal experiments with advanced liver-on-chip devices August 17th, 2015

Omni Nano and Time Warner Cable Partner to Provide Nanotechnology Education to the Boys & Girls Clubs of Los Angeles: A $10,000 Donation to Benefit Youth of Los Angeles County's Boys & Girls Clubs August 4th, 2015

Kalam: versatility personified August 1st, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic