Abstract Scope |
The rise of readily available high-resolution additive manufacturing (AM) technologies, such as digital light processing (DLP), in the past decade has led to increasing research interest in fabrication and performance characterization of mechanical metamaterials, which typically contain mesoscale features. Based on the preliminary metamaterial performance maps, the vector of resin development points toward developing low-density, high modulus material system which is not commercially available. Here, we aim to develop these resin systems and characterize their properties to enable metamaterial and other applications.
The resin is demonstrated to fabricate 26 × 26 × 26 mm complex mechanical metamaterial structure with over 34% density reduction and increased modulus by over 10%. The thinnest negative and positive feature was 500 and 400 μm, respectively. The structures are further characterized for performance validation and dimensional fidelity. Also, initial efforts to fabricate multi-material structures, which modeling indicates could result in substantial performance enhancement, are presented. |