A version 4.0 of my package bundle chemmacros is coming nearer. The most notable difference will be that the chemformula package will be usable as a standalone package. This is not what I am going to ask you about. You may know that chemmacros provides some orbital pictures:

## Is this going …

… to be my next package? \documentclass{article} \usepackage[T1]{fontenc} \usepackage{libertine} \usepackage{elektrochemie} \begin{document} \setechemie{   membrane ,   electrodes = {Cu}{Zn} ,   anode-color = {red!20} ,   electrolyte-color = {blue!5} }

\end{document}

## The »bohr« package

Sometimes things go fast. This weekend a question on TeX.sx popped about how to create Bohr models with LaTeX.

## Nanotubes with TikZ

Although I know TikZ for quite a while now and believe I have a good idea of what’s possible with it, it never seizes to amaze me. One I can’t hide from you: