See if you can find the 8 differences in each set of images.

Regenerative nano-gel

Scanning electron micrograph of a network formed by peptide amphiphile nanofibers and hyaluronic acid.

Jacob Lewis, Northwestern University, USA.

figure 1

Metal—organic framework fireworks

Scanning electron microscope image of metal-organic framework colloidal particles with six branches prepared by post-synthesis etching. The porous particles show improved catalytic behaviors and look like sponges in the sea or fireworks on a starry night. Each particle is pseudo-colored to highlight the complicated surface morphologies.

Zihao Ou, University of Illinois at Urbana-Champaign, USA.

figure 2