Auxetic Material

Simple SummaryContent extracted from patent full text and abstract with AI.

The invention describes an auxetic material made from a periodic arrangement of specially designed, three-dimensional structural elements whose geometry endows the material with a negative Poisson's ratio. This means that when stretched, the material expands perpendicular to the direction of the stretch, and when compressed, it contracts laterally. The design allows tuning of these auxetic properties and the material can be made from metals, ceramics, or polymers.

Use CasesContent extracted from patent full text and abstract with AI.

• Bone replacement materials in medical implants (e.g., for orthopedic and dental applications)
• Intervertebral disc replacement and bone marrow substitutes
• Cushioning and impact protection materials (e.g., for helmets, protective gear, automotive parts)
• Acoustic materials for sound absorption and noise reduction
• Adaptive filters with tunable pore sizes for filtration or separation
• Scaffolds for tissue engineering and regenerative medicine
• Components of composite materials with enhanced mechanical properties

BenefitsContent extracted from patent full text and abstract with AI.

• Auxetic behavior results in unique mechanical properties such as improved energy absorption and impact resistance
• Customizable properties through controlled geometry and choice of base material
• Can be produced from a wide range of biocompatible metals, ceramics, or polymers suitable for medical and industrial use
• The periodic, engineered structure allows for precisely tunable mechanical responses
• Potential to improve integration and performance in implants by mimicking natural bone properties
• Facilitates nutrient and fluid transport in medical applications due to pump-like effects when loaded and unloaded
• Broader design flexibility compared to conventional auxetic foams or random structures

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to an auxetic material that is composed of a periodic arrangement of three-dimensional structural elements (G, G1, G2, G3) connected to each other, wherein each of the structural elements (G) comprises a first (3) and at least three second supporting elements (4), wherein the first (3) and the second supporting elements (4) are connected at a common node (1) with their one ends, and wherein a first angle (a) between the first supporting element (3) and the second supporting elements (4) is less than 90°.