Flexible Active Peltier Coolers Based on Interconnected Magnetic Nanowire Networks

Overview

Journal Nanomaterials (Basel)

Date 2023 Jun 10

PMID 37299636

Authors

Tristan da Camara Santa Clara Gomes

Nicolas Marchal

Flavio Abreu Araujo

Luc Piraux

Affiliations

Soon will be listed here.

Abstract

Thermoelectric energy conversion based on flexible materials has great potential for applications in the fields of low-power heat harvesting and solid-state cooling. Here, we show that three-dimensional networks of interconnected ferromagnetic metal nanowires embedded in a polymer film are effective flexible materials as active Peltier coolers. Thermocouples based on Co-Fe nanowires exhibit much higher power factors and thermal conductivities near room temperature than other existing flexible thermoelectric systems, with a power factor for Co-Fe nanowire-based thermocouples of about 4.7 mW/K2m at room temperature. The effective thermal conductance of our device can be strongly and rapidly increased by active Peltier-induced heat flow, especially for small temperature differences. Our investigation represents a significant advance in the fabrication of lightweight flexible thermoelectric devices, and it offers great potential for the dynamic thermal management of hot spots on complex surfaces.

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