. Nano Technology News .

Synthetic and biological nanoparticles combined to produce new metamaterials
by Staff Writers
Aalto, Finland (SPX) Dec 21, 2012

Two different protein cages, cowpea chlorotic mottle virus (blue) and Pyrococcus furiosus ferritin (red), can be used to guide the assembly of binary nanoparticles superlattices through tunable electrostatic interactions with charged gold nanoparticles (yellow). Credit: Johanna Juselius.

Scientists from Aalto University, Finland, have succeeded in organising virus particles, protein cages and nanoparticles into crystalline materials. These nanomaterials studied by the Finnish research group are important for applications in sensing, optics, electronics and drug delivery.

Layer structures, or superlattices, of crystalline nanoparticles have been extensively studied in recent years. The research develops hierarchically structured nanomaterials with tuneable optical, magnetic, electronic and catalytic properties.

Such biohybrid superlattices of nanoparticles and proteins would allow the best features of both particle types to be combined. They would comprise the versatility of synthetic nanoparticles and the highly controlled assembly properties of biomolecules.

The research group also discovered magnetic self-assemblies of ferritin protein cages and gold nanoparticles. These magnetic assemblies can modulate efficiently spin-spin relaxation times of surrounding protons in water by enhancing the spin dephasing and consequently provide contrast enhancement in magnetic resonance imaging (MRI).

The gold nanoparticles and viruses adopt a special kind of crystal structure. It does not correspond to any known atomic or molecular crystal structure and it has previously not been observed with nano-sized particles.

Virus particles - the old foes of mankind - can do much more than infect living organisms. Evolution has rendered them with the capability of highly controlled self-assembly properties. Ultimately, by utilising their building blocks we can bring multiple functions to hybrid materials that consist of both living and synthetic matter, Kostiainen trusts.

The results have just been published in the respected journal Nature Nanotechnology.


Related Links
Aalto University
Nano Technology News From SpaceMart.com
Computer Chip Architecture, Technology and Manufacture

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review

Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Get Our Free Newsletters
Space - Defense - Environment - Energy - Solar - Nuclear


Nanocrystals Not Small Enough to Avoid Defects
Berkeley CA (SPX) Dec 17, 2012
Nanocrystals as protective coatings for advanced gas turbine and jet engines are receiving a lot of attention for their many advantageous mechanical properties, including their resistance to stress. However, contrary to computer simulations, the tiny size of nanocrystals apparently does not safeguard them from defects. In a study by researchers with the U.S. Department of Energy (DOE)'s La ... read more

Taiwan's China Airlines to buy six Boeing planes

Bird strike prevention radar system takes off

Boeing's Final Design for Wedgetail AEW and C Airborne Mission Segment Accepted by Australia

Upgraded MiG-29s supplied to India

Mr Xi in Space

China plans manned space launch in 2013: state media

China to launch manned spacecraft

Tiangong 1 Parked And Waiting As Shenzhou 10 Mission Prep Continues

Two Mannings in court: idealist or emotionally unstable?

US diplomacy goes virtual with youth video game

WikiLeaks suspect treated like 'zoo animal': lawyer

Northrop trials Aussie biometric ID system

Indian washermen spin out decades-old tradition

National Grid Creates Big Questions for Transmission Industry

Zimbabwe and China ink $400 mn electricity deal

Germany energy 'revolution' on course despite concerns

Keystone XL: Welcome to the Proxy Energy War

YPF seeks $37B cash for shale development

Mexico to Privatize State Oil Company Pemex?

BP says sells stake in China gas field to Kuwait

NGC Provides Attitude Heading Reference For Sikorsky's S-76D Helicopter

Lockheed Martin Wins Role on Army Software and Systems Engineering Contract

Integrated soldier kits for more troops

Britain's Charles shown Tata's new military-grade steel

Synthetic and biological nanoparticles combined to produce new metamaterials

Nanocrystals Not Small Enough to Avoid Defects

Nature Materials Study: Boosting Heat Transfer With Nanoglue

New optical tweezers trap specimens just a few nanometers across

Flexing fingers for micro-robotics: Berkeley Lab scientists create a powerful, microscale actuator

Head-mounted cameras could help robots understand social interactions

CU-Boulder team develops swarm of pingpong ball-sized robots

Research: Tiny robots may think as a group

The content herein, unless otherwise known to be public domain, are Copyright 1995-2012 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement