Nanosucculents

Photocatalytically active CuxWyS2 obtained by chemical vapor deposition. False-colored scanning electron microscope image.

Peter Sherrell, Imperial College London, UK.

figure 1

February 2019 answer key

figure 2

Apocalyptic future

Scanning electron microscope image (modified) of deep reactiveion-etched silicon with infiltrated salt.

Julia Kohanek, University of Illinois at Urbana-Champaign, USA.

figure 3