I’m starting a new repository on GitHub which will be an svg based set of scientific icons.
This is just the start of making some free to use (CC-BY-SA 4.0), science based icons that will be compiled into a web font (ttf, oeff, svg etc) and provide a css file to easy drop in placement into many websites in the science fields.
A lot of the icons are meant as inaccurate depictions. The goal is to convey the general idea behind the button or status without having to have every proton in the right place.
If you’d like to help, there are instructions on the github page for contributions.