Virus memory

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A camera fitted with a virus chip would take a few microseconds to display an image, compared with the milliseconds taken by existing devices, says Yang Yang of the University of California, Los Angeles, whose team is working on the virus chip. The team built a transistor by embedding the coated virus strips in a polymer matrix, sandwiched between two electrodes much like a standard transistor. Apply a voltage to the transistor, and the platinum nanoparticles - roughly 16 per virus - each donate an electron to proteins on the surface of the virus, moving the device to an ON state.