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MEASUREMENT OF THERMOELECTRIC AND THERMAL TRANSPORT PROPERTIES OF SINGLE-MOLECULE JUNCTIONS

DOI: 10.1615/AnnualRevHeatTransfer.v16.90
pages 259-286

Woochul Lee
Department of Mechanical Engineering, University of Michigan, Ann Arbor, 48109, USA

Bai Song
Department of Mechanical Engineering, University of Michigan, Ann Arbor, 48109, USA

Pramod Reddy
Department of Mechanical Engineering, University of Michigan, Ann Arbor, 48109, USA; Department of Materials Science and Engineering, University of Michigan, Ann Arbor, 48109

Sinopsis

The study of thermoelectric and thermal properties of single-molecule junctions is expected to provide important insights into the relationship between molecular structure and the resultant transport properties. Computational studies have predicted several interesting thermoelectric effects in molecular junctions including the possibility of simultaneously achieving a large electrical conductance and Seebeck coefficient. The experimental techniques required to study these interesting thermoelectric properties−at the single/few molecule level−have been developed recently and are described in detail here. Thermal transport properties of single-molecule/polymer junctions have also been computationally studied and various interesting predictions have been made. Although pioneering measurements of thermal transport in monolayers of molecules and polymer nanofibers have been accomplished, to date it has not been possible to probe heat transfer at the single-molecule/polymer chain level. Here, we outline the challenges in performing such measurements and suggest possible approaches to overcome them.

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