Professor Martijn Kemerink of Linköping University has worked with colleagues in Spain and the Netherlands to develop the first material with conductivity properties that can be switched on and off using ferroelectric polarisation.
Plasma technology could hold the key to creating a sustainable oxygen supply on Mars, a new study has found. It suggests that Mars, with its 96 percent carbon dioxide atmosphere, has nearly ideal conditions for creating oxygen from CO2 through a process known as decomposition.
A double helix twisted around itself: this is the distinctive structure of DNA, which is made up of large molecules. Using synthetically produced molecules, chemists and physicists at Martin Luther University Halle-Wittenberg (MLU) have investigated the forces which are at work inside the molecule to give it its three-dimensional structure. The scientists have recently presented their findings in the international edition of the journal Angewandte Chemie.
To make natural gas and biogas suitable for use, the methane has to be separated from the CO2. This involves the use of membranes: filters that stop the methane and let the CO2 pass through. Researchers at KU Leuven (University of Leuven), Belgium, have developed a new membrane that makes the separation process much more effective.
A French and Japanese research group has developed a new way of visualizing the atomic world by turning data scanned by an atomic force microscope into clear color images. The newly developed method, which enables observation of materials and substances like alloys, semiconductors, and chemical compounds in a relatively short time, holds promise of becoming widely used in the research and development of surfaces and devices.
Two researchers in the UK, using laser-flash photography of microscopic droplet-particle collisions, have discovered that water droplets still have liquid tricks to reveal. Previous research has primarily examined droplet collisions with flat surfaces, such as a wall, but this research team examined the less studied case of a droplet having a head-on collision with a solid, spherical particle. They discuss their work in this week's Physics of Fluids.
Physicists have proven theoretically that active sieving, as opposed to its passive counterpart, can improve the separation abilities of filtration systems. This research on how active sieving could improve systems such as water purification and dialysis were reported this week in The Journal of Chemical Physics. Active sieving also has the potential to filter molecules based on movement dynamics, opening up a new avenue in membrane science based on the ability to tune osmotic pressure.
The side-by-side deposition of atomically flat semiconductor sheets enhances solar cell conversion efficiency.
Research recently published in Nature Communications examines on the capabilities of a human protein that inhibits HIV-1, APOBEC3G (A3G). The paper highlights the work of Northeastern Physics Professor and Chair Mark Williams, postdoctoral researcher Mike Morse, Professor Linda Chelico, University of Saskatchewan in Canada, and Ioulia Rouzina, Ohio State University.
Although proteins have very different function functions, or specialties, in living cells, they share the general characteristics -- the same universality -- in their motions, say University of Oregon scientists. Their motion is much like mountain landslides or wildfires, they report in the journal Physical Review Letters.