This article by Jon Hauenstein with me for SIAM News (Society for Industrial and Applied Mathematics) describes research by Mark Plecnik in the computer-aided design of linkages to provide mechanical movement of a bird’s wing. Here is Mark’s video of the his wing flapping mechanism.
See Epsilon at the 2015 LA Auto Show. This former FSAE racecar is now UCI’s research vehicle for an innovative torque-vectoring electric drive system. The body is by a team at the Art Institute of Orange County.
This mechanical system was designed by Yang Liu to trace the shape of a heart. The work is inspired by the mechanical 32-element harmonic synthesizer described by Dayton Miller in the 1916 article in the Journal of the Franklin Institute.