Publications by Year: 2017

Deng B, Raney JR, Tournat V, Bertoldi K. Elastic vector solitons in soft architected materials. Physical Review Letters. 2017;118 :204102. [pdf] [movies]
Boatti E, Vasios N, Bertoldi K. Origami Metamaterials for Tunable Thermal Expansion. Advanced Materials. 2017;29 (17) :1700360-1700366.Abstract

Materials with engineered thermal expansion, capable of achieving targeted area/volume changes in response to variations in temperature, are important for a number of aerospace, optical, energy, and microelectronic applications. While most of the proposed structures with engineered coefficient of thermal expansion consist of bi-material 2D or 3D lattices, here it is shown that origami metamaterials also provide a platform for the design of systems with a wide range of thermal expansion coefficients. Experiments and simulations are combined to demonstrate that by tuning the geometrical parameters of the origami structure and the arrangement of plates and creases, an extremely broad range of thermal expansion coefficients can be obtained. Differently from all previously reported systems, the proposed structure is tunable in situ and nonporous.

Buckling-Induced Kirigami
Rafsanjani A, Bertoldi K. Buckling-Induced Kirigami. Physical Review Letters. 2017;118 :084301. [pdf] [movies] [cover]
Wang Z, Polygerinos P, Overvelde JTB, Galloway KC, Bertoldi K, Walsh CJ. Interaction Forces of Soft Fiber Reinforced Bending Actuators. IEEE/ASME Transactions on Mechatronics. 2017. [pdf]
Wang P, Zheng Y, Fernandes MC, Sun Y, Xu K, Sun S, Kang SH, Tournat V, Bertoldi K. Harnessing Geometric Frustration to Form Band Gaps in Acoustic Networks. Physical Review Letters [Internet]. 2017;118 (8) :084302. Matlab Code [pdf]
Overvelde JTB, Weaver JC, Hoberman C, Bertoldi K. Rational design of reconfigurable prismatic architected materials. Nature. 2017;541 :347-352. [pdf] [movies] [matlab code] [News&Views]
Connolly F, Walsh CJ, Bertoldi K. Automatic design of fiber-reinforced soft actuators for trajectory matching. Proceedings of the National Academy of Sciences of the United States of America. 2017;114 :51-56. [pdf] [movies]