BIOMIMETIC DEVICES. “The reversible 3D photonic actuators transformed from the programmed 2D structures via the bending, twisting and folding mechanisms may be applied in the field of mechanical actuators, and optoelectronic and bio-mimetic devices.”
http://www.researchgate.net/profile/Edwin_Thomas/publication/255749505_Three-dimensional_actuators_transformed_from_the_programmed_two-dimensional_structures_via_bending_twisting_and_folding_mechanisms/links/0deec523344479213f000000.pdf