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Scientists use electron 'ink' to write on graphene 'paper'

Scientists use electron 'ink' to write on graphene 'paper' | Biosciencia News | Scoop.it
(Phys.org) —Nanoscale writing offers a reliable way to record information at extremely high densities, making it a promising tool for patterning nanostructures for a variety of electronic applications.
Biosciencia's insight:

Images taken by a scanning transmission electron microscope (STEM) of electron ink on graphene paper, showing the letter ā€œNā€ and the symbol ā€œÉ….

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Ultrashort laser pulses squeezed out of graphene

Ultrashort laser pulses squeezed out of graphene | Biosciencia News | Scoop.it
Experiments suggest that the carbon sheets can produce beams in broad range of colours.
Nature News doi: 10.1038/nature.2013.12911
Biosciencia's insight:

Graphene's hexagonal lattice of carbon atoms can absorb laser light like a sponge and then release it in bursts lasting just a fraction of a nanosecond.

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New magnetic graphene may revolutionise electronics

New magnetic graphene may revolutionise electronics | Biosciencia News | Scoop.it
Researchers from IMDEA-Nanociencia Institute and from Autonoma and Complutense Universities of Madrid (Spain) have managed to give graphene magnetic properties.
Biosciencia's insight:

Scientists were already aware that graphene, an incredible material formed of a mesh of hexagonal carbon atoms, has extraordinary conductivity, mechanical and optical properties. Now it is possible to give it yet one more property: magnetism, implying a breakthrough in electronics.

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Controlling magnetic clouds in graphene | The University of Manchester

Controlling magnetic clouds in graphene | The University of Manchester | Biosciencia News | Scoop.it

Wonder material graphene can be made magnetic and its magnetism switched on and off at the press of a button, opening a new avenue towards electronics with very low energy consumption.

Biosciencia's insight:

In a report published in Nature Communications, aUniversity of Manchester team led by Dr Irina Grigorieva shows how to create elementary magnetic moments in graphene and then switch them on and off.

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Graphene joins the race to redefine the ampere

Graphene joins the race to redefine the ampere | Biosciencia News | Scoop.it
A new joint innovation by the National Physical Laboratory (NPL) and the University of Cambridge could pave the way for redefining the ampere in terms of fundamental constants of physics.
Biosciencia's insight:

The international system of units (SI) comprises seven base units (the metre, kilogram, second, Kelvin, ampere, mole and candela). Ideally these should be stable over time and universally reproducible. This requires definitions based on fundamental constants of nature which are the same wherever you measure them.

The present definition of the Ampere, however, is vulnerable to drift and instability. This is not sufficient to meet the accuracy needs of present and certainly future electrical measurement. The highest global measurement authority, the Conférence Générale des Poids et Mesures, has proposed that the ampere be re-defined in terms of the electron charge.

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