About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Lightweight Composites, Materials & Alloys
|
| Presentation Title |
Bottom-Up Design and Fabrication of Thermoelectric Nanomaterials |
| Author(s) |
Kevin P. Anderson, Benjamin L. Greenberg, Alan G. Jacobs, James A. Wollmershauser, Boris N. Feigelson |
| On-Site Speaker (Planned) |
Kevin P. Anderson |
| Abstract Scope |
Thermoelectric materials uniquely exhibit the Seebeck effect, enabling direct conversion of thermal energy to electricity. Improving the power conversion efficiency of thermoelectric materials is a long-standing challenge that must be addressed through the innovative design and fabrication of high performance materials with new combinations of architecture and composition. In particular, nanostructuring offers a promising avenue for inhibiting thermal transport and maximizing thermoelectric efficiency. In this work, novel core-shell nanocomposite materials were fabricated via a unique method incorporating particle atomic layer deposition (pALD) on nanopowders and subsequent Environmentally Controlled – Pressure Assisted Sintering (EC-PAS) to produce bulk solids. These materials feature fully dense, percolated networks of nanoscale semiconductor and insulating phases, enabling tuning of electrical and thermal conductivity. The iterative design approach, novel processing methods, and resultant microstructures will be discussed, along with effects on relevant thermal and electrical properties. |