Category Technology/Electronics

The research team, left to right: Brookhaven Lab research collaborator David Szalda, Baruch College; David Shaffer, Yan Xie, and Javier Concepcion, Brookhaven Lab. Not pictured: Anna Lewandowska-Andralojc, Adam Mickiewicz University. Credit: Image courtesy of DOE/Brookhaven National Laboratory

For artificial photosynthesis to become a viable alternative to fossil fuels, the efficiency and speed of water oxidation ie into O2, H ions, and electrons–is one of the processes that must be improved. By accelerating formation of O-O bond in water oxidation, newly developed ruthenium catalysts could drive the reaction needed to efficiently store solar energy in the chemical bonds of clean fuels.

The 2 catalysts–complexes of ruthenium surrounded by binding molecules (ligands) containing phosphonate ...

Scene from Ice Age (2002) processed in the style of The Starry Night. Comparing independent per-frame processing to our time consistent approach, the latter is clearly preferable. Credit: Manuel Ruder, et al.

3 researchers at the University of Freiburg has taken the science of using neural networks to understand the style of paintings done by human hands and applying it to modern photographs, one step further, by applying it to video.

Imagine if you could film a friend with your phone, as he wanders aimlessly down a road on the edges of a quaint village, then use an app to make it look like your friend was wandering through a Starry Night painting, by Vincent Van Gough? It appears the day may be coming when amateur and professional video/movie makers alike may be able to do such things wit...

Image of one of the graphene-based devices Xu and colleagues worked with. Credit: Lei Wang

In traditional light-harvesting methods, energy from 1 photon only excites 1 electron or none depending on the absorber’s energy gap. The remaining energy is lost as heat. But a new article describe an approach to coax photons into stimulating multiple electrons. Their method exploits some surprising quantum-level interactions to give one photon multiple potential electron partners.

Wu and Xu in UW’s Dept of Materials Science & Engineering and the Det of Physics, made this surprising discovery using graphene.
The researchers took a single atom layer of graphene and sandwiched it between 2 thin layers of boron-nitride. Electrons do not flow easily within boron-nitride so it is an insulator.

When the g...

This is an optical nanocavity made, from top to bottom, of molybdenum disulfide (MoS2), aluminum oxide and aluminum. Credit: University at Buffalo

The future of movies and manufacturing may be in 3D, but electronics and photonics are going 2D semiconducting materials. One of the latest advancements centers on molybdenum disulfide (MoS2), while commonly used in lubricants and steel alloys, is still being explored inoptoelectronics. Recently, engineers placed a single layer of MoS2 molecules on top of a photonic structure called an optical nanocavity made of aluminum oxide and aluminum. (A nanocavity is an arrangement of mirrors that allows beams of light to circulate in closed paths which build things like lasers and optical fibers used for communications.)

The MoS2 nanocavity can increase ...