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Journal articles
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.
Cited literature [19 references]
https://hal-cea.archives-ouvertes.fr/cea-01366531
Contributor : Dominique Girard <>
Submitted on : Wednesday, September 14, 2016 - 5:18:51 PM
Last modification on : Monday, February 10, 2020 - 6:14:05 PM
Long-term archiving on: : Thursday, December 15, 2016 - 3:27:40 PM
Contributor : Dominique Girard <>
Submitted on : Wednesday, September 14, 2016 - 5:18:51 PM
Last modification on : Monday, February 10, 2020 - 6:14:05 PM
Long-term archiving on: : Thursday, December 15, 2016 - 3:27:40 PM
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