| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Undergraduate Student Poster Contest
|
| Presentation Title |
SPU-20: Electrical Transport Properties in 3D-Printed Variably Uniform 2D-Networks |
| Author(s) |
Caitlyn E. Obrero, Carmen Lee, Karen E. Daniels, Christopher Rock, Katie Newhall |
| On-Site Speaker (Planned) |
Caitlyn E. Obrero |
| Abstract Scope |
Hyperuniformity refers to a characteristic of networks with minimal density fluctuations over a long-range order, and have special properties seen in both nature and mathematical theory. Motivated to connect these properties, we aim to investigate the electrical transport properties of disordered metamaterials that have network structures with tunable uniformity. By iteratively applying Lloyd’s Algorithm on a randomly generated point cloud, we created variably uniform quasi 2D-networks that approached uniformity. Using metal powder additive manufacturing techniques, we fabricated sets of networks generated with Lloyd’s Algorithm in Ti-6Al-4V and 17-4PH Steel and conducted 4-point probe resistance measurements. We observed that with both material sets, the resistance increased as the structures became more uniform, and was direction-dependent across each structure. As a comparison, we constructed a prediction model for the electrical resistance in a network structure using graph Laplacian and confirmed that our experimental results matched our prediction model. |