Our recent ES&T Letters paper was chosen for the cover of the March issue. Congratulations to Mahmut for this nice bonus to what was already a nice achievement of getting his paper accepted.
My part in this effort was to draw the spiral-wound nanofiltration module. I used AutoCAD and its 3D modeling capabilities. You can download the original file here.
The Adobe Photoshop file, with the molecules and the module as separate layers, can be downloaded here.