salah bedair – Shamskm: A site to exchange knowledge and solutions

New Connection between Stacked Solar Cells Can Handle Energy of 70,000 Suns

North Carolina State University researchers have come up with a new technique for improving the connections between stacked solar cells, which should improve the overall efficiency of solar energy devices and reduce the cost of solar energy production. The new connections can allow these cells to operate at solar concentrations of 70,000 suns worth of energy without losing much voltage as “wasted energy” or heat.

Stacked solar cells consist of several solar cells that are stacked on top of one another. Stacked cells are currently the most efficient cells on the market, converting up to 45 percent of the solar energy they absorb into electricity. (more…)

Researchers Find New Way to Create ‘Gradients’ for Understanding Molecular Interactions

By Guest PostAugust 16, 2013Sciencealbena ivanisevic, amino acid, biological systems, biomolecular gradients, cell receptors, gradients, human body, indium gallium nitride, indium rich end, ingan, l arginine, lauren bain, ligands, molecular behavior, molecules, new technique, north Carolina, oxide accumulation, peptides, ph level, proteins, salah bedair, semiconductor material, state university, substrate, tania paskova

Scientists use tools called gradients to understand how molecules interact in biological systems. Researchers from North Carolina State University have developed a new technique for creating biomolecular gradients that is both simpler than existing techniques and that creates additional surface characteristics that allow scientists to monitor other aspects of molecular behavior.

A gradient is a material that has a specific molecule on its surface, with the concentration of the molecule sloping from a high concentration on one end to a low concentration at the other end. The gradient is used not only to determine whether other molecules interact with the molecules on the gradient, but to determine the threshold level at which any interactions take place. (more…)

Tag Archives: salah bedair

New Connection between Stacked Solar Cells Can Handle Energy of 70,000 Suns

Researchers Find New Way to Create ‘Gradients’ for Understanding Molecular Interactions