If the Poisson’s ratio of the material if positive, then tensile/compressive strains in the x-direction produce compressive/tensile strains in the y- and z-directions, as shown below. Negative Poisson ...

(Nanowerk News) Like most materials, an elastic band gets thinner when it is stretched. But some materials behave in the opposite way — they grow thicker when stretched and thinner when compressed.

Figure 1: Design concept and schematic fabrication process of the impact-buffered structural electrodes. (a) Advantages of NPR-structural electrodes compared to the thin film structure and mesh ...

Researchers engineer a new class of microlattice materials with enhanced stiffness-to-density ratios and giant negative Poisson's ratios, ideal for lightweight applications. (Nanowerk Spotlight) ...

Regardless of whether it is strained or compressed, the new material always expands. Copyright: Thomas Heine et al. Researchers have discovered a two-dimensional ...