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Nanowires promise to make LEDs more colorful and solar cells more efficient, in addition to speeding up computers. That is, provided that the tiny semiconductors convert electric energy into light, and vice versa, at the right wavelengths. Researchers have managed to produce nanowires with operating wavelengths that can be freely selected over a wide range. Fine-tuned nanowires could take on several roles in optoelectronic components, thus making them more powerful, more cost-effective, and easier to integrate.
One in 11 adults worldwide suffers from diabetes, and the number of diabetes patients is rising rapidly. Diabetes is worldwide one of the most widespread diseases. In the most common form of diabetes, type 2 diabetes, the body cells react increasingly insensitively to the hormone insulin, which is produced by beta cells in the pancreas and is intended to promote the absorption of sugar from the blood into the cells.
Imagine if your printer had an 'unprint' button that used pulses of light to remove toner, curbing environmental impacts compared with conventional paper recycling.