Magnetic-charge ice’ slides into view

A new material called “magnetic-charge ice” has been created by physicists in the US. The magnetic properties of the material can be manipulated at the nanometre scale and the material could someday be used to encode data at higher densities than current magnetic memories. The techniques used to create and control the new material could […]

Ionic additive improves OFETs

Researchers at the Chinese Academy of Sciences in Beijing and the University of Cambridge in the UK have accidently discovered how to enhance the charge-carrier mobility in conjugated polymer thin films by simply adding an ionic additive. The new films, which have a hole mobility that is 24 times higher than those without the ionic […]

Dumbbell dimers could make miniaturized nanosensors

The handedness of individual chiral nanoparticles made of metallic dumbbells can be determined by their optical properties alone. So say researchers in Texas in the US and Donostia-San Sebastian in Spain, whose new work could help in the development of highly efficient miniaturized nanoscale sensors for studying the structure of chiral molecules and biomolecules like […]

Photoactive pixels switch on and off

Thanks to photocurrent spectral atomic force microscopy (PCS-AFM), researchers at the Massachusetts Institute of Technology (MIT) say they have been able to observe photoactive pixels switching on and off in a heterostructure made of two different 2D materials. The technique might help in the design of new electronic and optoelectronic devices based on these atomically […]

Photonic gyroids mimic butterfly wings

Using a technique called optical two-beam super-resolution lithography, researchers in Australia have succeeded in making photonic “gyroid” nanostructures similar to those found in butterfly wings. The artificial structures, which outperform their natural counterpart in many ways, might be used in a variety of photonics and optics technologies…. http://nanotechweb.org/cws/article/tech/64982 Comparing an artificial and natural gyroid structure

Collecting hot carriers in graphene superlattices

t least five “hot carriers” are produced for every photon absorbed by superlattices made from graphene and boron nitride. This new result from researchers in New York, Tallahassee and Seattle, means that the carbon sheet could be used to make flexible optoelectronics devices such as ultrafast and highly efficient photodetectors and solar cells…. http://nanotechweb.org/cws/article/tech/64988 Moiré […]

Analysing ‘3D graphene’

Researchers in Australia and Singapore are the first to have measured the electronic properties of topological Dirac semimetal thin films, which are 3D analogues of graphene. These films, made from sodium bismuth, have high charge carrier mobilities and could be used to make new electronic devices like topological transistors…….. http://nanotechweb.org/cws/article/tech/64999 Na3Bi thin films

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