David S. Goodsell has done some incredible molecular artwork
depicting biological systems at a molecular level. In
particular one drawing depicts a cross-section of a small
portion of an Escherichia coli
cell. Numerous details of the bacterial outer membrane are
represented. The illustration is available at http://www.scripps.edu/pub/goodsell/illustration/public/.
The IGC Molecular Art gallery provides beautiful examples of scientific artwork
online. Take a virtual tour !
Force fields
Useful general information can be found in the
ChamotLabs Periodic Table. Further links to various parametrizations
maintained by Gerry Lushington are accessible from here.
Amber users might be quite interested by the Amber parameter database. The
Amber home page provides details about forcefields and
parametrisation.