Researchers using powerful supercomputers have found a way to generate microwaves with inexpensive silicon, a breakthrough that could dramatically cut costs and improve devices such as sensors in self-driving vehicles.
Carbon nanotubes are supermaterials that can be stronger than steel and more conductive than copper, but they're rare because, until now, they've been incredibly expensive.
Scientists at the Department of Energy's Oak Ridge National Laboratory are the first to successfully simulate an atomic nucleus using a quantum computer. The results, published in Physical Review Letters, demonstrate the ability of quantum systems to compute nuclear physics problems and serve as a benchmark for future calculations.
Paintings by Vincent van Gogh, Pablo Picasso and Johannes Vermeer have been delighting art lovers for years. But it turns out that these works of art might be their own worst enemy -- the canvases they were painted on can deteriorate over time. In an effort to combat this aging process, one group is reporting in ACS Applied Nano Materials that nanomaterials can provide multiple layers of reinforcement.
By chemically attaching nano-particles of the rare earth element, gadolinium, to carbon nanotubes, the researchers have found that the electrical conductivity in the nanotubes can be increased by incorporating the spin properties of the gadolinium which arises from its magnetic nature.
DNA, the carrier of genetic information, has become established as a highly useful building material in nanotechnology. One requirement in many applications is the controlled, switchable assembly of nanostructures. In the journal Angewandte Chemie, scientists have now introduced a new strategy for control through altering pH value. It is based on ethylenediamine, which only supports the assembly of DNA components in a neutral to acidic environment -- independent of the base sequences and without metal ions.
Newly-developed nanovalves allow the flow of individual nanoparticles in liquids to be controlled in tiny channels. This is of interest for lab-on-a-chip applications such as in materials science and biomedicine.
A collaboration research team at the Toyohashi University of Technology and Massachusetts Institute of Technology has revealed the relationship between the strain in a magnetic insulator thin film and spin waves. The relationship between magnetoelastic anisotropy and propagation properties of forward volume spin waves in single-crystalline yttrium iron garnet films grown on three garnet substrates was experimentally demonstrated. This facilitates the design of spin wave integrated circuits.
Scientists at the University of Alberta have applied a machine learning technique using artificial intelligence to perfect and automate atomic-scale manufacturing, something which has never been done before. The vastly greener, faster, smaller technology enabled by this development greatly reduces impact on the climate while still satisfying the insatiable demands of the information age.
Columbia investigators have made a major breakthrough in nanophotonics research, with their invention of a novel 'home-built' cryogenic near-field optical microscope that has enabled them to directly image, for the first time, the propagation and dynamics of graphene plasmons at variable temperatures down to negative 250 degrees Celsius. If researchers can harness this nanolight, they will be able to improve sensing, subwavelength waveguiding, and optical transmission of signals.