DEVELOPMENT OF SELF-ACTUATED AUXETIC STRUCTURE FOR BIOMEDICAL APPLICATION

Abstract

Structures having negative Poisson’s ratio are known as auxetic structures. These structures expand latterly when stretched longitudinally. Negative Poisson’s ratio enhances the mechanical properties of the material like increased plane strain fracture, increased shear modulus, indentation resistance and fracture toughness. These properties can be very useful in medical devices formation. Taking this in consideration micro scale auxetic membrane was developed. For self-actuation, hydrogel was attached to the auxetic membrane. The purpose of self-actuated auxetic structure was to achieve controlled porosity. This micro scale actuation can be used for biomedical applications like controlled drug dispensation and auxetic stents.