This solution combines tangible representation with augmented reality. Molecules are represented directly through tangible object and fiducial markers are placed on top of them to serve as reference for the augmented reality aspect. Additional information can be visualized thanks to it, e.g. electrostatic field info may appear using a vector field of small arrows. Moreover, manipulation of the visualization is direct, simply grab the molecule in your bare hand and move it and turn it around.
Sources
[1] A. Gillet, M. Sanner, D. Stoffler, and A. Olson, “Tangible Interfaces for Structural Molecular Biology,” Structure, vol. 13, no. 3, pp. 483–491, Mar. 2005.