Work

An autonomous feedback protocol: responding to temperature and potential changes in energy converters

Year: 2026

Type: preprint

Abstract: Nanoscale thermoelectric devices convert tiny amounts of heat into power. But what happens if the external conditions and resulting temperature differences are not a priori known? We propose a feedback mechanism that optimizes the performance of a quantum-point-contact-based heat engine (QPC). A quantum-dot detector measures the external conditions and gives autonomous feedback on the QPC's properties. We expect this feedback mechanism to be experimentally relevant for steady-state engines with unknown external conditions and for adapting dynamic charging processes to the potential buildup.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2608.21113

Authors: Danielsson, Elsa, Delima, Krishna Lyn, Bertin-Johannet, Bruno, Splettstoesser, Janine

Institution: Chalmers University of Technology

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: European Commission, Knut och Alice Wallenbergs Stiftelse, HORIZON EUROPE Framework Programme