Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

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

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

'Electronic skin' could improve early breast cancer detection October 29th, 2014

Tiny carbon nanotube pores make big impact October 29th, 2014

Discoveries

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Announcements

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Food/Agriculture/Supplements

Nanoparticles Display Ability to Improve Efficiency of Filters October 28th, 2014

Smallest world record has 'endless possibilities' for bio-nanotechnology October 8th, 2014

Simple Detection of Toxic Compounds in Dairy Products October 6th, 2014

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Environment

Microrockets fueled by water neutralize chemical and biological warfare agents October 29th, 2014

Nanoparticles Display Ability to Improve Efficiency of Filters October 28th, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Human Interest/Art

Iran-Made Respiratory Nano Masks Provided to Hajj Pilgrims October 23rd, 2014

Japanese gold leaf artists worked on a nano-scale: Study demonstrates X-ray fluorescence spectroscopy is a non-destructive way to date artwork July 3rd, 2014

Harry Potter-style invisibility cloaks: A real possibility next Christmas? Forget socks and shaving foam, the big kids of tomorrow want an invisible cloak for Christmas December 19th, 2013

Chicago Awareness Organization First Not-for-Profit to Sponsor Dog Training to Detect Ovarian Cancer Odorants December 12th, 2013

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE