Diatoms are among my favourite examples of "Nature's nanotechnology" from which we still have so much to learn. I wrote quite a few pieces about them in the late 90s / early 00s, but then lost track of them a bit. Now I've caught up with the field and have written a feature article which is out in this week's issue of Chemistry & Industry (issue 14, page 21-23).
It appears to be freely accessible here - you just have to click on the sub-headings to get the next part of the text.
Photo: Wipeter, Wikimedia Commons