Harvesting dissipated energy with a mesoscopic ratchet - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Nature Communications Year : 2015

Harvesting dissipated energy with a mesoscopic ratchet

Abstract

The search for new efficient thermoelectric devices converting waste heat into electrical energy is of major importance. The physics of mesoscopic electronic transport offers the possibility to develop a new generation of nanoengines with high efficiency. Here we describe an all-electrical heat engine harvesting and converting dissipated power into an electrical current. Two capacitively coupled mesoscopic conductors realized in a two-dimensional conductor form the hot source and the cold converter of our device. In the former, controlled Joule heating generated by a voltage-biased quantum point contact results in thermal voltage fluctuations. By capacitive coupling the latter creates electric potential fluctuations in a cold chaotic cavity connected to external leads by two quantum point contacts. For unequal quantum point contact transmissions, a net electrical current is observed proportional to the heat produced.
Fichier principal
Vignette du fichier
ncomms7738 (1).pdf (611.17 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-01366531 , version 1 (14-09-2016)

Identifiers

Cite

B. Roche, P. Roulleau, T. Jullien, Y. Jompol, I. Farrer, et al.. Harvesting dissipated energy with a mesoscopic ratchet. Nature Communications, 2015, 6, pp.6738. ⟨10.1038/ncomms7738⟩. ⟨cea-01366531⟩
109 View
118 Download

Altmetric

Share

Gmail Facebook X LinkedIn More