ananyo writes "A new kind of computer memory can be read 10,000 times faster than flash memory using pulses of light, taking advantage of principles used in solar panel design. Researchers built the prototype device using bismuth ferrite. In conventional computer memory, information is stored in cells that hold different amounts of electric charge, each representing a binary '1' or '0.' Bismuth ferrite, by contrast, and can represent those binary digits, or bits, as one of two polarization states, and, because of its photovoltaic properties, can switch between these states in response to visible light."
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