Friday, October 4, 2024

DVD Drives Turned Into Microscopes


" This build requires two DVD pickups. By scanning once horizontally and once vertically and measuring the returning light from the DVD laser, an image can be created. For this build, the second pickup is used to move the object itself. The entire device is controlled by an Analog Discovery 2, although this principle could be ported to other microcontroller platforms. Thanks to the extremely fine laser in a DVD and the precise movements of the motors found in the control machinery, the images obtained using this method have the potential to be more detailed than comparable visible light microscopes.
While this isn't quite scanning electron microscope territory, it's good enough to clearly image the internal workings of a de-capped integrated circuit."


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