Check out our latest paper:  S. Pande,  N. J. Macias, C. Ciobanu, C. Yoon, C. Teuscher, and D. H. Gracias, Assembly of a 3D Cellular Computer Using Folded E-Blocks, Micromachines, 7(5), 78, 2016. DOI: http://dx.doi.org/10.3390/mi7050078