Credit: "High-spatial-resolution mapping of catalytic reactions on single particles," Nature, Jan. 11, 2017
Nanosized gold particles, shown here at low-magnification, left, and high-magnification, right, in images produced with a scanning electron microscope, were studied with infrared light produced by Berkeley Lab’s Advanced Light Source. The scale bar at left represents 5 microns, or 5 millionths of an inch, and the scale bar at right represents 1 micron.