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Microstructured silicon photodetector
Textured silicon: scanning electron micrograph showing the photodetector's laser etched surface. The microstructures are 2-3 microns tall and spaced at roughly 2-3 micron intervals. As the researchers explain, the shape of the pillars depends heavily on the laser fluence, shot number, gas species, gas pressure and pulse duration. (Credit: Harvard University, US)
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