One of its drawbacks, however, is that it displays 2D images. How expensive do you think it would be to retrofit an ultrasound machine to produce 3D images? Try a $10 chip and pennies worth of ...

Using X-ray pulses to illuminate nanoparticles, researchers decode diffraction patterns to construct detailed three-dimensional images. (Illustration: ETH Zürich / Daniela Rupp) In a 2D-XRD experiment ...