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Details of The war of nanometers 6

Two scientists of the center of search IBM of Saint Jose, in California, have announced of being resolutions to measure the guideline and the force of the magnetic disposed iron atom anisotrophy single on one surface in branch.

The magnetic anisotrophy, has explained the investigators, is one property important in order to determine the ability to an atom memorizzare in stable way a bit of information. "Today one of the main challenges for industry IT is consequently to reduce the how much more possible dimension of the bit used for the memorization of the data, increasing the ability to the recording supports", has said Gian Luca Bona, manager Science and Technology near IBM Almaden Research Center di San Jose, in California, "we are working to extreme limits, and now we are a step nearer to imagine like memorizzare given to atomic level. To comprise magnetic the specific property of atoms is the first step in order to continue towards given methods new and more effective than memorization ".

According to announced scientific result from IBM it reaches from Zurigo, where some investigators have put to point a method in order to use one molecule like one risen of able switch to work without to disintegrate the external structure of the same molecule. Draft, according to Big Blue, of "a meaningful step in ahead towards computazionali elements of base on molecular scale that are remarkablly more small, faster and have a smaller energetic consumption regarding puts into effect them chip of the computers and unit of memory".

The investigators have moreover demonstrated that the atoms to the inside of a molecule can be employ to you in order commutare atoms in one adjacent molecule, with the possibility, therefore, to implement rudimentali logical elements. Previously, the investigators of IBM and other companies had demonstrated the commutation possibility to the molecule inside single, but the molecules changed shape during the commutation, and therefore they seemed inadatte in order to construct logical circuits for chip of the computers or elements of memory.

"These molecular switches could a day carry to chip of the computers with equal speed to those of put into effect them supercomputers, but much smaller in the idmensioni. Someone assumes quite chip for small computers therefore from being able to be compares to you to granelli of powder or such from being able to be in the tip of a needle ", IBM asserts.

Ventimila gold particles, ciascuna del diameter of sixty nanometers, one hundred times smaller than a red globule, beyond millesima the part del diameter of a hat. IBM has assembled them with one particular technique of "nanostampa" in order producing one very small work of art. Draft of an image of the sun, than for the alchemists in XVII the century symbolized the gold, one reproduction of a work of the doctor, astronomer and mystic of 17esimo the century Robert Fludd.

If a machine for the offset press work with a resolution of 1500 points for inch, the studied method of nanostampa from IBM catches up the one hundred thousand DPI (Dots For Inch)"For before the time - the company in a famous one declares - the investigators has printed particles quite of 60 nanometers - approximately 100 times smaller than human a red globule - with resolution of a single particle, in order to create nanomodelli that they go from simple lines to complex dispositions".

But in order which reason to develop one technical of press on one reduced scale a lot? The press, explains an article published on Nanotechnology Natures, is the technology more used in order to deposit of particles of small various dimensions on superficial. One technical similar, on reduced scale much more, could find application in the within of the electronics, the optical, of the biotechnology, used in order to produce structures whose dimensions, in the order of the nanometers, confer to they peculiar property.

The ordinary press previews that an image is affected one metallic slab, filled up of ink and transferred on seams that to they time imprimono the image on the surface to print. Through "dwarf-it prints" IBM, single nanoparticelle are moved from the "seam" to the surface to print without some dispersion, being maintained their disposition (thanks to the technique of the "directed assemblage", that she takes advantage of the property of the nanomateriali, come transferred from the matrix to the surface to print without that their structure endures modifications).

"This technique - Heiko Wolf looks on to, investigator near laboratory IBM of Zurigo - will open the road to new methods for posizionare in efficient way and specifies various types of nanoparticelle on superficial different, so as to being able some to take advantage of the only property to feasible costs".

The company explains that the method of "dwarf-prints" developed will be able to operate with particles of dimensions until two nanometers, creating complex structures in which every the single one nanoparticella can maintain its property. This technique of assemblage will be able to play a fundamental role in the production of the chip of the future, in order to produce cables in the order of magnitude of millionth of millimeter, or also for the development of able biosensori to reveal the presence of toxins or pathogenic agents.

"the nanoparticelle - IBM explains - they can moreover interact with the light. With the new method, optical materials with new property could be printed, as an example for the use in the devices optoelettronici you. The "metamateriali" could be created the so-called, in which small the printed publication structures are how much the wavelength of the light and therefore they act like if they were an only disc of a valve with extraordinary property ".