Three-Dimensional Polymer Constructs Exhibiting a Tunable Negative Poisson's Ratio.

ABSTRACT: Young's modulus and Poisson's ratio of a porous polymeric construct (scaffold) quantitatively describe how it supports and transmits external stresses to its surroundings. While Young's modulus is always non-negative and highly tunable in magnitude, Poisson's ratio can, indeed, take on negative values despite the fact that it is non-negative for virtually every naturally occurring and artificial material. In some applications, a construct having a tunable negative Poisson's ratio (an auxetic construct) may be more suitable for supporting the external forces imposed upon it by its environment. Here, three-dimensional polyethylene glycol scaffolds with tunable negative Poisson's ratios are fabricated. Digital micromirror device projection printing (DMD-PP) is used to print single-layer const

SUBMITTER: Fozdar DY 

PROVIDER: S-EPMC3155506 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature