About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Mesoscale Phenomena in Functional Polycrystals and Nanostructures
|
| Presentation Title |
D-15: Structural Optimization of Transport Properties in Artificial Interfacial Solids for High ZT Thermoelectrics |
| Author(s) |
Minhaz Morshed, Ovijit Das, Aashish Gautam, Chinonso Ugwumadu, Kishor Nepal, Dharma Basaula, Benjamin Greenberg, Kevin Anderson, Sarshad Rommel, David Drabold, Mark Aindow, James Wollmershauser, Boris Feigelson, Serge Nakhmanson |
| On-Site Speaker (Planned) |
Minhaz Morshed |
| Abstract Scope |
Artificial Interfacial Solids (AIS), bulk-solid monolithic materials fabricated from purposefully engineered nanoparticle blocks are expected to possess decoupled thermal and electronic transport properties, thus alleviating some shortcomings of ‘traditional’ thermoelectric compounds as reflected in improved efficiency for interconversion of thermal and electric energy. Here we present the results of mesoscale-level modeling of AIS thermoelectric properties, with input from microstructure evaluation by electron microscopy and atomistic-level studies of transport phenomena at grain boundaries and interfaces. The main goal of the project is to establish connections between thermoelectric performance and geometrical descriptors, such as size, shape and orientation of the AIS nanoconstituents, characteristics and morphology of the interfacial regions connecting them, and other relevant materials-dependent parameters. Novel AIS-based thermoelectric materials could be employed for thermal energy recovery in a variety of applications, as well as improve the efficiency of solid-state thermoelectric generators (which are inherently quiet and vibration free power sources). |