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15/04/2014: Nanophononics: controlling thermal vibrations at the nanoscale - a theoretical perspective

Event details

When

Apr 15, 2014
from 03:00 to 05:00

Where

Seminar Room - Department of Materials Science, U5 Building

Contact Name

Prof. G. Brivio, Prof. G. Pacchioni

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RelatoreDavide Donadio - Max Planck Institute for Polymer Research, Mainz, Germany

TitoloNanophononics: controlling thermal vibrations at the nanoscale - a theoretical perspective

Abstract:
Heat is a well known and ubiquitous form of energy, but it is still very difficult to harness. In semiconductors and insulator, as well as in soft matter, heat is mostly carried by phonons and vibrations. The main goal of (nano)phononics is to design materials and devices with a high degree of control on phonon conduction and dissipation, in analogy with what is routinely achieved in electronics, and to a lesser extent in photonics and acoustics. Applications requiring improved control of phonons include thermoelectric energy conversion, active or passive cooling,nanoelectromechanical systems (NEMS) and information technology. Thermal phonons with typical wavelengths of the order of nanometers can be effectively manipulated by engineering materials at the nanoscale. Modeling at full atomistic detail is crucial to understand heat transport in such systems, and to guide the development of phononic materials and devices.
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