Nanoscale Electrothermal Energy Transport

By Ali Shakouri

Birck Nanotechnology Center, Purdue University, West Lafayette, IN

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Abstract

Energy consumption in our society is increasing rapidly. More than 85% of the available energy is lost in the form of heat. In this talk we review the potential of thermoelectric devices that allow direct conversion of heat into electricity. Novel metal-semiconductor nanocomposites are developed where the heat and charge transport are modified at the atomic level [1]. Potential to increase the energy conversion efficiency and lower the cost will be discussed. We also describe how similar principles can be used to make high speed micro refrigerators on a chip. Thermoreflectance imaging is used to study Peltier cooling and Joule heating in devices with 800ps time and submicron spatial resolution. The ballistic heat conduction and the transition between energy and entropy transport in ultra short times and in thin film devices will be discussed. Finally a brief overview of new research initiatives at the Birck center will be presented.

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References

  1. A. Shakouri, “Recent developments in semiconductor thermoelectric physics and materials,” Annual Review of Materials Research, July 2011.

Cite this work

Researchers should cite this work as follows:

  • Ali Shakouri (2013), "Nanoscale Electrothermal Energy Transport," http://nanohub.org/resources/17172.

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Location

203 Physics, Purdue Universtiy, West Lafayette, IN

Nanoscale Electrothermal Energy Transport
  • Nanoscale Electrothermal Energy Transport 1. Nanoscale Electrothermal Energ… 0
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  • Birck Nanotechnology Center 2. Birck Nanotechnology Center 88.788788788788793
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  • Non uniform temperature in CPUs (central processing units) 3. Non uniform temperature in CPU… 279.07907907907907
    00:00/00:00
  • Power dissipation challenges 4. Power dissipation challenges 333.60026693360027
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  • Peltier Effect (1834) 5. Peltier Effect (1834) 381.01434768101439
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  • Thermoelectric (Peltier) Coolers 6. Thermoelectric (Peltier) Coole… 409.3093093093093
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  • Microrefrigerators on a chip 7. Microrefrigerators on a chip 458.324991658325
    00:00/00:00
  • Performance of microrefrigerators 8. Performance of microrefrigerat… 596.996996996997
    00:00/00:00
  • High resolution thermoreflectance imaging 9. High resolution thermoreflecta… 650.61728395061732
    00:00/00:00
  • Heating in Electro Static Discharge Devices 10. Heating in Electro Static Disc… 759.65965965965972
    00:00/00:00
  • SiGe/Si superlattice thermal conductivity 11. SiGe/Si superlattice thermal c… 807.34067400734068
    00:00/00:00
  • SiGe/Si superlattice thermal conductivity 12. SiGe/Si superlattice thermal c… 884.08408408408411
    00:00/00:00
  • Our Energy Challenge for Sustainable Future 13. Our Energy Challenge for Susta… 978.57857857857857
    00:00/00:00
  • Direct Conversion of Heat into Electricity 14. Direct Conversion of Heat into… 986.51985318651987
    00:00/00:00
  • Climate Change 15. Climate Change 1065.3319986653321
    00:00/00:00
  • CO2 Emission Goals (2000-2100) 16. CO2 Emission Goals (2000-2100) 1115.4487821154489
    00:00/00:00
  • World Marketed Energy Use1990-2035 17. World Marketed Energy Use1990-… 1172.5058391725058
    00:00/00:00
  • World Energy Use in 2005 (15TW) 18. World Energy Use in 2005 (15TW… 1193.626960293627
    00:00/00:00
  • Power Generation Efficiencies 19. Power Generation Efficiencies 1336.4698031364699
    00:00/00:00
  • Recent Advances in ZT 20. Recent Advances in ZT 1553.2532532532532
    00:00/00:00
  • Low Dimensional Thermoelectrics 21. Low Dimensional Thermoelectric… 1580.3803803803805
    00:00/00:00
  • Thermionic Energy Conversion Center (2003-2012) 22. Thermionic Energy Conversion C… 1632.5658992325659
    00:00/00:00
  • Refractory (Zr,W)N/ScN Metal/Semiconductor Superlattices 23. Refractory (Zr,W)N/ScN Metal/S… 1766.0660660660662
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  • ScN/ZrWN Superlattice thermal conductivity 24. ScN/ZrWN Superlattice thermal … 1787.5208541875209
    00:00/00:00
  • ErAs Semi-metal Nanoparticles embedded in InGa(Al)As Semiconductor Matrix 25. ErAs Semi-metal Nanoparticles … 1823.7237237237239
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  • Thermoelectric figure-of-merit 26. Thermoelectric figure-of-merit 1851.4848181514849
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  • Model of TE module + heat exchanger 27. Model of TE module + heat exch… 1879.2125458792127
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  • Diffusive or Ballistic Propagation of Heat 28. Diffusive or Ballistic Propaga… 1942.676009342676
    00:00/00:00
  • Analogy with Drift-Diffusion J = s E – e Dn ; s = enm m: mobility; D: diffusion coefficient Einstein Relation: D/m = kBT/e Luttinger's Gravitation Field Analogy 29. Analogy with Drift-Diffusion J… 2180.8475141808476
    00:00/00:00
  • Shastry: energy density propagation 30. Shastry: energy density propag… 2380.1134467801135
    00:00/00:00
  • Top surface energy density response: Thermal and Non-thermal contributions 31. Top surface energy density res… 2435.2018685352018
    00:00/00:00
  • Thermal contribution to energy transport 32. Thermal contribution to energy… 2494.4277610944278
    00:00/00:00
  • CO2e/ Person (tons) 33. CO2e/ Person (tons) 2521.2212212212212
    00:00/00:00
  • Individual Emissions (2030) 34. Individual Emissions (2030) 2614.4811478144811
    00:00/00:00
  • A Framework for Pro-Environmental Behaviours 35. A Framework for Pro-Environmen… 2672.6393059726392
    00:00/00:00
  • Aha! 36. Aha! 2701.0343677010346
    00:00/00:00
  • choice, change, belief, attitude, information, behaviour 37. choice, change, belief, attitu… 2715.7157157157158
    00:00/00:00
  • Comfort and indoor environments 38. Comfort and indoor environment… 2741.2746079412746
    00:00/00:00
  • Summary 39. Summary 2800.1001001001
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