[1] Na, J.H., et al., “Programming reversibly self‐folding origami with micropatterned photo‐crosslinkable polymer trilayers,” Advanced Materials journal, Vol. 1, No. 27, pp. 79-85, 2015.
[2] Gracias, D.H., et al., “Forming electrical networks in three dimensions by self-assembly,” science journal, Vol. 289, No. 5482, pp. 1170-1172, 2000.
[3] Randall, C.L., Gultepe, E., and Gracias, D.H., “Self-folding devices and materials for biomedical applications,” Trends in biotechnology journal, Vol. 3, No. 30, pp. 138-146, 2012.
[4] Xia, F., et al., “Two-dimensional material nanophotonics,”. Nature Photonics journal, Vol. 8, No. 12, pp. 899-914, 2014.
[5] Hu, J., et al., “Recent advances in shape–memory polymers: Structure, mechanism, functionality, modeling and applications,” Progress in Polymer Science journal, Vol. 37, No. 12, pp. 1720-1763, 2012.
[6] Hopkinson, N., Hague, R. and Dickens, P., “Rapid manufacturing: an industrial revolution for the digital age,” John Wiley & Sons, pp. 356-357, 2006.
[7] Allen, R.J. and Trask, R.S., “An experimental demonstration of effective Curved Layer Fused Filament Fabrication utilising a parallel deposition robot,” Additive Manufacturing journal, Vol. 8, pp. 78-87, 2015.
[8] Bellehumeur, C., et al., “Modeling of bond formation between polymer filaments in the fused deposition modeling process,” Journal of Manufacturing Processes, Vol. 6, No. 2, pp. 170-178, 2015.
[9] Lee, A.Y., An, J. and Chua, C.K., “Two-way 4D printing: a review on the reversibility of 3D-printed shape memory materials”. Engineering journal, Vol. 3, No. 5, pp. 663-674, 2017.
[10] Bodaghi, M., Damanpack, A. and Liao,W., “Adaptive metamaterials by functionally graded 4D printing,” Materials & Design journal, Vol. 135, pp. 26-36, 2017.
[11] Ionov, L., Hydrogel-based actuators: possibilities and limitations. Materials Today, 17(10): p. 494-503, 2014.
[12] Jeon, S.-J., Hauser, A.W. and Hayward, R.C., “Shape-morphing materials from stimuli-responsive hydrogel hybrids,” Accounts of chemical research journal, Vol. 5, No. 2, pp. 161-169, 2017.
[13] Woltman, S.J., Jay, G.D. and Crawford, G.P., “Liquid-crystal materials find a new order in biomedical applications,” Nature materials journal, Vol. 6, No. 12, pp. 929-938, 2007.
[14] Ohm, C., Brehmer, M., and Zentel, R., “Liquid crystalline elastomers as actuators and sensors,” journal of Advanced Materials, Vol. 22, No. 31, pp. 3366-3387, 2010.
[15] Liu, Y., et al., “Self-folding of polymer sheets using local light absorption,” Soft matter journal, Vol. 8, No. 6, pp. 1764-1769, 2012.
[16] Mao, Y., et al., “Sequential self-folding structures by 3D printed digital shape memory polymers,” Scientific reports journal, pp. 13616-13628, 2015.
[17] Janbaz, S., Hedayati, R. and Zadpoor, A., “Programming the shape-shifting of flat soft matter: from self-rolling/self-twisting materials to self-folding origami,” Materials Horizons journal, Vol. 3, No. 6, pp. 536-547, 2016.
[18] Wu, J., et al., “Multi-shape active composites by 3D printing of digital shape memory polymers,” Scientific reports journal, pp. 24224-24238, 2016.
[19] van Manen, T., Janbaz, S. and Zadpoor, A.A., “Programming 2D/3D shape-shifting with hobbyist 3D printers,” Materials Horizons journal, Vol. 4, No. 6, pp. 1064-1069, 2017.
[20] Raviv, D., et al., “Active printed materials for complex self-evolving deformations,” Scientific reports journal, 2014. 4: p. 7422. Vol. 4, pp. 7422-7429, 2014.
[21] Felton, S.M., et al., “Self-folding with shape memory composites,” journal of Soft Matter, Vol. 9, No. 32, pp. 7688-7694, 2013.
[22] Tolley, M.T., et al., “Self-folding origami: shape memory composites activated by uniform heating,” Smart Materials and Structures journal, 2014. 23(9): p. 094006. Vol. 23, No. 9, 2014.
[23] Yang, W.p. and Tarng, Y., “Design optimization of cutting parameters for turning operations based on the Taguchi method,” Journal of materials processing technology, Vol. 84, No. 3, pp. 122-129, 1998.
[24] ASTM D 638 -02a, “Standard test method for tensile properties of plastics,” 2003.