Berlin 2015 – wissenschaftliches Programm
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PV: Plenarvorträge
PV III
PV III: Preisträgervortrag
Montag, 16. März 2015, 13:15–13:45, H 0104
Nanophononics: investigation and manipulation of lattice dynamics and phonon transport at nanoscale level — •Ilaria Zardo1, Simone Assali1, Sara Yazji2, Stefan Funk2, Milo Y. Swinkels1, Rob W. van der Heijden1, Erik P. A. M. Bakkers1, and Gerhard Abstreiter2,3 — 1Department of Applied Physics, Eindhoven University of Technology, Eindhoven, The Netherlands — 2Walter Schottky Institut, Technische Universität München, Garching, Germany — 3Institute of Advanced Study, Technische Universität München, Garching, Germany --- Laureate of the Hertha-Sponer-Prize
The interest in low dimensional systems has been steadily growing over the last decades. A particularly interesting system is provided by nanowires (NWs). The functional properties of NWs can be manipulated by tuning the crystal structure, and by the fabrication of 3-D complex novel architectures. These unique features can be exploited to investigate and manipulate lattice dynamics and phonon transport at nanoscale level. Apart from the fundamental interest, these studies can provide new pathways and systems to boost thermoelectricity.
The talk will focus on showing the understanding of the modifications of the lattice dynamic and optoelectronic properties of semiconductor NWs with respect to the bulk counterpart due to the different crystal phases [1-3]. Furthermore, we report on our investigations of the thermoelectric properties of semiconductor nanowires.
[1] S. Assali et al., Nano Lett., 13, 1559, (2013). [2] S. Funk et al., ACS Nano, 7, 1400, (2013). [3] I. Zardo et al., Nano Lett., 13, 3011, (2013)