Tag: lead-researcher

LED lights could get better with self-assembling particles

LEDs have dramatically transformed the lighting world over the past few years, thanks to their increased efficiency and life-span over past technologies. But LEDs could see even more upgrades with perovskite particles, a self-assembling nanoscale material that could make them even more efficient and cheaper to produce, Physorg reports . Researchers have already shown how perovskites could improve solar cells, but until now it was difficult to create uniform films made out of the material. “Our new technique allows these nanoparticles to self-assemble to create ultra-fine grained films, an advance in fabrication that makes perovskite LEDs look more like a viable alternative to existing technologies, ” said Barry Rand , an assistant professor of electrical engineering at Princeton and the lead researcher in the findings. Basically, this bodes well for the future of LEDs. It could eventually make it easier to developer LED panels for TVs and monitors, or drive down the cost of LED lighting. Lighting using the new technology are superior in many ways to old-school incandescent bulbs, or even slightly more modern fluorescent bulbs, but they still cost quite a bit more than the older competition. Via: Physorg Source: Nature

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LED lights could get better with self-assembling particles

Dutch scientists’ artificial leaf can create medicine anywhere

Wouldn’t it be great to have the ability to concoct medicine anywhere the sun shines, even if it’s on another planet? A team of Dutch scientists from Eindhoven University of Technology have developed an artificial leaf-like device that could make that happen. The researchers, inspired by plants that can make their own food through photosynthesis , used materials that can match leaves’ capability to capture and store sunlight for later use. These materials are called luminescent solar concentrators (LSCs), which have special light-sensitive molecules that can capture huge amounts of incoming light. The team designed a device that looks like a leaf by incorporating thin, microchannels mimicking veins in a silicon rubber LSC. By pumping liquids into those channels, their molecules can get into contact with the sunlight absorbed by the LSC. The energy is intense enough to trigger chemical reactions. According to the researchers, the device’s chemical production was 40 percent higher than the rate demonstrated by similar experiments without LSC. “Using a reactor like this means you can make drugs anywhere, in principle, whether malaria drugs in the jungle or paracetamol on Mars, ” lead researcher Dr. Timothy Noël explained. “All you need is sunlight and this mini-factory.” Source: Eindhoven University of Technology

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Dutch scientists’ artificial leaf can create medicine anywhere