Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Tailor-made magnetic nanoparticles

22.07.2010
Magnetic nanoparticles provide a multitude of technical applications like magnetic resonance imaging, hyperthermic treatment of cancer, drug delivery, catalysis, biosensors, semiconductors and information storage. The magnetic properties strongly depend on size and shape, and production of defined and homogeneous particles is essential for their application. Monocrystalline particles can be synthesized chemically, but this route suffers from broad size distributions, low gram quantities or only poorly defined magnetic properties which limit the number of applications.

<p> The limitations of chemical synthesis can be overcome by nanoparticles produced by magnetotactic bacteria. The prototypical Magnetospirillum (M.) gryphiswaldensee exhibits octahedral magnetite (Fe3O4) nanocrystals with a maximal size of 50 nm. Shape and size can be controlled by genetic engineering leading to recombinant magnetic nanoparticles from 20 nm to 150 nm in diameter. Particle sizes in the transition area in between supra- and ferrimagnetism are difficult to achieve chemically or other methods. <p> Based on the unique properties the tailor made nanocrystals produced by bacterial magnetosomes several applications can be developed. In hyperthermal treatments, a high specific energy transfer can be achieved. Likewise, magnetic separation will benefit from the high specific magentization capacity and will improve the process. <p>

Magnetic particles can be produced and adjusted in size. To characterize their magnetic properties, samples may be provided.

Further Information: PDF

Bayerische Patentallianz GmbH
Phone: +49 89 5480177-0

Contact
Peer Biskup

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=1700&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht New Lithium Salts of Pentafluorophenylamide Anions as Electrolytes in Lithium Ionic Batteries
18.04.2017 | TechnologieAllianz e.V.

nachricht Gratings on glass surfaces
28.03.2017 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

Im Focus: Quantum-physical Model System

Computer-assisted methods aid Heidelberg physicists in reproducing experiment with ultracold atoms

Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...

Im Focus: Glacier bacteria’s contribution to carbon cycling

Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.

A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

New quantum liquid crystals may play role in future of computers

21.04.2017 | Physics and Astronomy

A promising target for kidney fibrosis

21.04.2017 | Health and Medicine

Light rays from a supernova bent by the curvature of space-time around a galaxy

21.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>