About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Alloys and Compounds for Thermoelectric and Solar Cell Applications XIII
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Presentation Title |
Monte Carlo Simulation of Transient and Steady-State Electron Gas Thermodynamic Cycle |
Author(s) |
Mona Zebarjadi, Farjana Tonni, Kazuaki Yazawa , Ali Shakouri |
On-Site Speaker (Planned) |
Mona Zebarjadi |
Abstract Scope |
Monte Carlo simulations are used to analyze transient non-equilibrium electron gas dynamics in a solid-state device wherein electrons are compressed, heated, and released to replicate the Otto cycle of mechanical heat engines. This is fundamentally apart from well-known solid-state thermoelectric or thermionic generators. While mimicking the Otto cycle, the transient nature of the dynamics makes it distinct from the thermodynamics Otto cycle. We show that thermal efficiencies higher than 70% are possible when the input heat is small. As we increase the input heat, the efficiency drops significantly and approaches a few percent due to larger electron-phonon interaction rates for higher energy electrons. Further, we extend the idea of cooling as a result of electron expansion to the geometrical expansion of electrons during steady-state operation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Modeling and Simulation, Nanotechnology |