Category Technology/Electronics

This diagram illustrates the effect of helium ions on the mechanical and electrical properties of the layered ferroelectric: a.) Disappearance domains in the exposed area; as the mound forms yellow regions (ferroelectricity) gradually disappear; b.) Mechanical properties of the material; warmer colors indicate hard areas, cool colors indicate soft areas; c.) Conductivity enhancement; warmer colors show insulating areas, cooler colors show more conductive areas. Credit: ORNL

2D electronic devices could inch closer to their ultimate promise of low power, high efficiency and mechanical flexibility with a processing technique developed at the Department of Energy’s Oak Ridge National Laboratory...

Image of a nonlinear Bessel beam. Credit: Miguel Ángel Porras

Researchers have revealed the underlying order of chaos by observing very long and intense laser light beams and ionized matter in the so-called “light filaments”. Observed for first time in solids in 1964 and in the air in 1994, the “light filamentation” phenomenon has been recently explained by researchers from the Complex Systems Group (GSC), Madrid. Thanks to the new understanding of the “light filamentation” phenomenon from the approach of complex systems and the chaos theory, new research projects will be boosted to control such “light filaments” and to improve their applications.

One of the goals of the Science of Complexity is to extract patterns of behavior where only disorder is observed, no matter if the object o...

Experimental results for dried films formed of a binary mixture of colloidal particles of size ratio 7:1.

Researchers from the University of Surrey in collaboration with the Université Claude Bernard, Lyon used computer simulation and materials experiments to show how when coatings with different sized particles, such as paints dry, the coating spontaneously forms two layers. This mechanism can be used to control the properties at the top and bottom of coatings independently, which could help increase performance of coatings across industries as diverse as beauty and pharmaceuticals.

Dr Andrea Fortini explained: “When coatings such as paint, ink or even outer layers on tablets are made, they work by spreading a liquid containing solid particles onto a surface, and allowing the liquid to e...

By simply shining the right color of light on the graphene, contaminants and light-sensitive soap mixture, the graphene clusters together and sinks; shining a different color of light re-disperses it for re-use. Credit: Monash University

A simple effective way of capturing graphenes and the toxins, contaminants they attract from water by using light has been found. The findings could have significant implications for large-scale water purification. A small amount of a special light-sensitive soap was added to the water containing the graphenes and contaminants. The soap changes its molecular structure when light of a particular colour is shone onto it...