Scientists Creating New Materials...with Viruses?
2013 02 04

By Mark Hoffman | ScienceWorldReport.com

Scientists combine synthetic and biological nanoparticles to produce new metamaterials

Aalto University scientists have organized synthetic and biological building blocks in a single structure - combining virus particles (and other protein cages) with inorganic nanoparticles to form crystalline layer structures, or superlattices.

The research aims to develop hierarchically structured nanomaterials with tunable optical, magnetic, electronic and catalytic properties. Such nanomaterials are important for applications in sensing, optics, electronics and drug delivery.

By generating biohybrid 3D superlattices of nanoparticles and proteins, "the versatility of synthetic nanoparticles and the highly controlled assembly properties of biomolecules can be combined," explains Dr Mauri Kostiainen of Aalto University Department of Applied Physics, who led the research.

"Binary nanoparticle lattices have received so much attention because they can provide a way to prepare multifunctional metamaterials - periodic artificial materials not found in nature. In them, new properties arise from collective behaviour," explains Kostiainen.

For example, they showed that virus or ferritin protein cages can be used to guide the assembly of RNA molecules or iron oxide nanoparticles into superlattices, formed through tunable electrostatic interactions with charged gold nanoparticles.

"The gold nanoparticles and viruses adopt a special kind of crystal structure that doesn’t correspond to any known atomic or molecular crystal structure and it has previously not been observed with nano-sized particles," said Kostiainen.

In bringing these kind of new materials to fruition, scientists turn the usually unwanted properties of viruses into something very useful, by employing the unique capability of highly controlled self-assembly of the virus particles.

The Academy of Finland funded the study.

The online article provides an in-depth description of this research project: http://dx.doi.org/10.1038/nnano.2012.220.

***

"Aalto University-led research group shows that CCMV virus or ferritin protein cages can be used to guide the assembly of RNA molecules or iron oxide nanoparticles into three-dimensional binary superlattices. The lattices are formed through tuneable electrostatic interactions with charged gold nanoparticles."

(No audio)



Article from: scienceworldreport.com






Related Articles
Nanomaterial Can Stop a Speeding Bullet, Strengthen Soldiers’ Body Armor
Nanotechnology condoms could provide greater protection against HIV and Herpes
Nanotech Dental Filling Kills Bacteria, Strengthens Teeth
New Discovery Provides Unprecedented Control of Magnetic Fields
New kind of magnetism discovered: ’Quantum Spin Liquid’
Earth’s Magnetic Field Made Quick Flip- Flop
New Metamaterial Proves To Be A Perfect Absorber Of Light


Latest News from our Front Page

Study Claims Cave Art Made by Neanderthals
2014 09 02
A series of lines scratched into rock in a cave near the southwestern tip of Europe could be proof that Neanderthals were more intelligent and creative than previously thought. The cross-hatched engravings inside Gorham’s Cave in Gibraltar are the first known examples of Neanderthal rock art, according to a team of scientists who studied the site. The find is significant because ...
EU Nanny State to Ban Toasters, Kettles & Hair Dryers!
2014 09 02
"Despite arctic sea ice growing by 43%, the EU nanny state is set to ban toasters, hair dryers and kettles in the name of preventing global warming."
Nigeria launches new biometric ID card - brought to you by Mastercard
2014 09 02
Yesterday afternoon, president Goodluck Jonathan became the first recipient of Nigeria’s new national eID card, in a ceremony at the presidential villa in the capital Abuja. The cards will be issued to 13 million Nigerians as part of a pilot project, with the ultimate aim of producing a national identity management system (NIMS). Nigeria’s NIMS is an ambitious attempt to consolidate ...
LA Times Now Describing Illegal Aliens As ’Informal Workers’ Who ’Labor Unofficially’
2014 09 02
Via Weasel Zippers, we learned the Los Angeles Times has a new term for illegal aliens in the work force: they’re “informal workers,” and that doesn’t mean they don’t arrive on the job in a tuxedo. Times reporter Tiffany Hsu (a "UC Berkeley grad") began her Saturday story with the new I-word (and illegal immigrants also “labored unofficially” in "gray employment"): Informal ...
13 years ago this man was accused of abusing 18 girls in Rotherham - so why are police only NOW acting on the claims?
2014 09 02
Comment: As this story finally is getting more and more coverage, let’s expose these sick perverts for what they are and get to the root of the problem that enabled horrors like this to not only go unnoticed for such a long time, but also to the heart of why people in law and government denied it and decided to ...
More News »