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Three-dimensional nanomagnets for the computer of tomorrow
by Staff Writers
Madrid, Spain (SPX) Nov 22, 2017


Fabrication process of the new 3-D nanomagnets: Using a gas injector and an electron microscope a scaffold is 3-D printed onto a Silicon substrate (steps 1 and 2). Magnetic material is deposited over the whole ensemble (green, step 3). Magnetic information is then read from the substrate and the nanostructure independently by using a laser (red, step 4).

Since the late 60's electronic devices have stored and transmitted information (bits) in two-dimensional circuits. Now, researchers at the University of Cambridge have been able to break this barrier by creating a nanoscale magnetic circuit capable of moving information along the three dimensions of space. This breakthrough could lead to an important increase in storage and processing capacities of electronic devices over those used today.

The information revolution that has shaped society into what it is today has been based on traditional printing of ever-shrinking electronic components. With current technologies reaching the limits of what Physics allows, researchers are starting to explore the third dimension in search for a route to continue improving those electronic devices in our pockets.

In a recent study published in the journal ACS Nano, researchers at the University of Cambridge (UK) and TU Eindhoven (Netherlands), demonstrate how by combining the most advanced techniques in 3D-nanprinting with traditional methods it becomes possible to create functional circuits that can process information.

"We demonstrate a new way to fabricate and use a magnetic device which, in a nanometric scale, can controllably move information along the three dimensions of space", highlights Amalio Fernandez-Pacheco, principal investigator of the project at the Cavendish Laboratory in Cambridge.

To create these nano-magnets in 3D an electron microscope is used along with a gas injector to 3D print a suspended scaffold on a traditional 2D Silicon substrate. After 3D nano-printing, magnetic material is deposited over the whole ensemble to allow information transport.

By combining a very precise fabrication protocol with an tailor-made laser system, the authors have been able to demonstrate the detection of structures which are almost completely suspended and have widths of only 300 nanometers.

"In this work not only we demonstrate a big leap in nanofabrication capacities, but also, importantly, we have developed a system which allows us to look at these tiny devices in a relatively simple way", remarks Dedalo Sanz-Hernandez, leader of this work.

"The information within the device can be read using a single laser in dark-field configuration (a technique designed to isolate small objects from bright backgrounds)", he explains.

This breakthrough is part of the broader field of what is known as 'spintronics'. Spintronic technologies not only exploit the electrical charge electrons to store and process information, but also their spin, allowing the development of electronic circuits that benefit from greater energy efficiency than current technologies.

"Projects such as this one open the path to the development of a completely new generation of magnetic devices that can store move and process information in a very efficient way by exploiting the three dimensions of space", remarks Fernandez-Pacheco.

Research Report: "Fabrication, Detection, and Operation of a Three-Dimensional Nanomagnetic Conduit".

CHIP TECH
Scientists create a prototype neural network based on memristors
Nizhny Novgorod, Russia (SPX) Nov 22, 2017
Lobachevsky University scientists under the supervision of Alexey Mikhailov, Head of the UNN PTRI Laboratory of Thin Film Physics and Technology, are working to develop an adaptive neural interface that combines, on the one hand, a living culture, and on the other, a neural network based on memristors. This project is one if the first attempts to combine living biological culture with a bi ... read more

Related Links
Spanish Foundation for Science and Technology
Computer Chip Architecture, Technology and Manufacture
Nano Technology News From SpaceMart.com


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