| AVS 60th International Symposium and Exhibition | |
| Advanced Surface Engineering | Friday Sessions |
| Session SE+EN-FrM |
| Session: | Surface Engineering for Energy Conversion and Harvesting |
| Presenter: | G. Mahan, Penn State University |
| Correspondent: | Click to Email |
Nanoscale materials and devices are usually composed of materials whose bulk thermal conductivity has been measured and is well understood. However, new effects arise when they are components of nanoscale materials: (i) The thermal boundary (Kapitza) resistance at each interface is often the largest component of the thermal resistance of the nanomaterial. Experimental and theoretical values for these boundary resistances are scarce; (ii) Phonon mean-free-paths are also nanometers, and diffraction effects from the nanostructure are important. (ii) The interfaces and nanostructures themselves will have new phonon modes. We briefly review recent work on this field. We also discuss some of our own work on calculations of Kapitza resistances at two kinds of boundaries: (i) metal-insulator, and (ii) liquid solid.
1) G.D. Mahan, Nanoscale and Microscale Therm. Eng. 12, 294 (2008)
2) G.D. Mahan, Phys. Rev. B79, 075408 (2009)
3) G.D. Mahan, Appl. Phys. Lett. 98, 132106 (2011)
4) S. Neogi and G.D. Mahan, in press