Cells are transparent, place a few drops of a dye called methylene blue onto the smear so the cells will be visible under the microscope. Use a mounted needle to gently lower a glass coverslip ...

[Andres] is working with an Atomic Force Microscope, a device that drags a small needle across a surface to produce an image with incredible resolution. The AFM can produce native .STL files ...

Atomic force microscopy (AFM) is a way to investigate the surface features ... An AFM uses a tool with a very tiny needle on its end, which can either be repelled or attracted to the surface. The ...