Auxetic Lattice Materials

Auxeticity & Anomalous Polarization

Anisotropic elastic materials can have faster transverse waves compared to longitudinal waves, which can open potential wave manipulation applications. However, realizable materials that can exhibit faster transverse waves are rarely found in nature. In this work, we study 3D periodic auxetic lattice materials that show anomalous wave polarization with the transverse wave being faster along a specific wave propagation direction. We use this material to show advanced wave propagation characteristics such as wave mode conversion and wave speed control. Read more about the project here.




  • G. U. Patil, A.S. Shedge, K. H. Matlack, 3D auxetic lattice materials for anomalous elastic wave polarization. Applied Physics Letters, vol.115, 091902 (2019)
  • G. U. Patil, K.H. Matlack, Anomalous wave polarization through a 3D periodic auxetic lattice. The Journal of the Acoustical Society of America, vol. 145, 1666 (2019)