Enhanced Efficiency of Thermoelectric Applications
at ORAU Workforce Solutions

Date Posted: 4/23/2019

Opportunity Description

Title of Research Opportunity: The Enhanced Efficiency of Thermoelectric Applications Utilizing Hetero-Nanostructures and Materials The research opportunity design and structure-property-function relationships of heteronanomaterials. Specifically, the opportunity seeks to study of emerging nanomaterials via growth, synthesis, characterization, and assembly with a focus on applications in thermoelectric (TE) power generation. The research seeks to investigate nanomaterials and van der Waals heterostructures made from them for enhanced thermal and electronic transport properties. The ultimate technology goal includes fabrication of efficient, low-cost, low-power thermoelectric generators and Peltier coolers for military and commercial applications. In conjunction with this goal, the research comprises of developing materials with high TE figure of merit (ZT) by preparing them in quantum well (nanostructured) super lattice (monolayer) as first described by Hicks and Dresselhaus [1]. Preliminary results show successful growth of nanostructure TE material (Bi2Te3) [2] as well as van der Waals thin film (graphene) for thermoelectric measurements (Seebeck, Resistivity, and Thermal conductivity). The research endeavor requires expertise in electron microscopy, surface probe microscopy, and spectroscopic techniques including; Scanning Probe Microscopy, Scanning and Tunneling Electron Microscopy, Laser Spectroscopy (Raman, IR), X-ray Diffraction. [1] L. D. Hicks and M. S. Dresselhaus, “Effect of quantum-well structures on the thermoelectric figure of merit,” Phys. Rev. B 47, 12727 (1993). [2] L. Giri, G Mallick, A. C. Jackson, M. H. Griep, and S. P. Karna, “Synthesis and characterization of high-purity, single phase hexagonal Bi2Te3 nanostructures,” RSC Advances 5, 645 (2015). Keywords: Thermoelectric Material, Power Generator, Peltier Cooler, Nanomaterials, Graphene, Thermal transport, van der Waals heterostructure, 3D assembled 2D nanostructures Click here for more information

Opportunity Snapshot

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