An international research group improved perovskite solar cells efficiency by using materials with better light absorption properties. For the first time, researchers used silicon nanoparticles. Such nanoparticles can trap light of a broad range of wavelengths near the cell active layer. The particles themselves don’t absorb light and don’t interact with other elements of the […]
Mining Hardware Helps Scientists Gain Insight Into Silicon Nanoparticles
Researchers first developed a three-dimensional dynamic model of an interaction between light and nanoparticles. They used a supercomputer with graphic accelerators for calculations. Results showed that silicon particles exposed to short intense laser pulses lose their symmetry temporarily. Their optical properties become strongly heterogeneous. Such a change in properties depends on particle size, therefore it […]
Mining Hardware Helps Scientists Gain Insight Into Silicon Nanoparticles
Researchers first developed a three-dimensional dynamic model of an interaction between light and nanoparticles. They used a supercomputer with graphic accelerators for calculations. Results showed that silicon particles exposed to short intense laser pulses lose their symmetry temporarily. Their optical properties become strongly heterogeneous. Such a change in properties depends on particle size, therefore it […]
Researchers Invent Light-Emitting Nanoantennas
Nanoscale light sources and nanoantennas already found a wide range of applications in several areas, such as ultra compact pixels, optical detection or telecommunications. However, the fabrication of nanostructure-based devices is rather complicated since the materials typically used have a limited luminescence efficiency. What is more, single quantum dots or molecules usually emit light non-directionally […]
Nanoscale Super-Resonator Extends Light Lifetime
Scientists designed the first subwavelength dielectric resonators for light trapping at the nanoscale that appears to be the simple silicon cylinder hundred times thinner than a human hair. Such a structure is capable to trap light ten times longer than any conventional resonator. Along with a simple shape and small size, it makes this new […]
New Femto-Camera With Quadrillion Fractions Of A Second Resolution
Researchers from ITMO University have built a setup for recording holograms of tiny objects like living cells with a femtosecond speed. The new method allows one to reconstruct phase topography of a studied sample according to deformations that emerge in a laser pulse when it passes through the specimen. In comparison to electron microscopes, the device can […]