Scientists have now characterized the higher energy levels reached by electrons in resonance in three-particle systems, which are too complex to be described using simple equations. This theoretical model is intended to offer guidance for experimentalists interested in observing these resonant structures in positronium ions.
Researchers have explored how renewable energy cooperatives have evolved. They have found that these cooperatives have developed a significant capacity to survive and adapt in response to the hostile context brought about by the economic and political regime.
A major factor holding back development of wearable biosensors for health monitoring is the lack of a lightweight, long-lasting power supply. Now scientists report that they have developed a method for making a charge-storing system that is easily integrated into clothing for 'embroidering a charge-storing pattern onto any garment.'
Scientists have demonstrated for the first time that heat from the sun and coldness from outer space can be collected simultaneously with a single device. Their research suggests that devices for harvesting solar and space energy will not compete for land space and can actually help each other function more efficiently.
Researchers are working to develop a method to convert water and carbon dioxide to the renewable energy of the future, using the energy from the sun and graphene applied to the surface of cubic silicon carbide. They have now taken an important step towards this goal, and developed a method that makes it possible to produce graphene with several layers in a tightly controlled process.
A research group has successfully developed a methodology for enhancing thermoelectric power factor while decreasing thermal conductivity. By introducing ZnO nanowires into ZnO films, the thermoelectric power factor became 3 times larger than that of ZnO film without ZnO nanowires. The success of this research will lead to the realization of high-performance transparent thermoelectric devices which will enable energy recovery from transparent objects used all over the world.
Researchers have taken an ordinary white button mushroom from a grocery store and made it bionic, supercharging it with 3D-printed clusters of cyanobacteria that generate electricity and swirls of graphene nanoribbons that can collect the current.
Many of today's methods of purifying water rely on filters and chemicals that need regular replenishing or maintenance. Millions of people, however, live in areas with limited access to such materials, leading the research community to explore new options of purifying water in using plasmas. Many plasma-based approaches are expensive, but a new class of plasma devices may change that. Researchers at the have been studying a new type of plasma generator for water purification.
A whiff of plasma, when combined with a nanosized catalyst, can cause chemical reactions to proceed faster, more selectively, at lower temperatures, or at lower voltages than without plasma. Using computer modeling, researchers investigated the interactions between plasmas and metal catalysts embedded into ceramic beads in a packed bed reactor. They discovered that together, the metals, beads and gas create plasma that intensifies electric fields and locally heats the catalyst, which can then accelerate reactions.
For sweeping drama, it's hard to beat hydropower from dams -- a renewable source of electricity that helped build much of the developed world. Yet five scientists say that behind roaring cascades is a legacy of underestimated costs and overestimated value.
By structuring nanowires in a way that mimics geckos' ears, researchers have found a way to record the incoming angle of light. This technology could have applications in robotic vision, photography and augmented reality.
Researchers have developed an artificial photosynthesis device called a ''hybrid photoelectrochemical and voltaic (HPEV) cell'' that turns sunlight and water into two types of energy - hydrogen fuel and electricity.
Perovskites form a group of crystals that have many promising properties for applications in nano-technology. However, one useful property that so far was unobserved in perovskites is so-called carrier multiplication -- an effect that makes materials much more efficient in converting light into electricity. New research has now shown that certain perovskites in fact do have this desirable property.
Researchers have developed new photocatalyst synthesis method using Magnesium hydride (MgH2) and Titanium dioxide (TiO2). The result is expected to contribute to hydrogen mass production through the development of photocatalyst that reacts to solar light.