Porous Anodic Alumina Membrane
Below are an image and video from a nano-CT scan of a commercial porous anodic alumina membrane having 200 nm pores. The walls between the pores are <100 nm thick. The solid rendered surfaces are the segemented pore volumes. The imaging was done in the high resolution mode with Zernike phase contrast. Image credits: Allen Miller and Pratiti Mandal.