Related Experiment Video
Updated: Jan 28, 2026
11:13
Analysis of Contact Interfaces for Single GaN Nanowire Devices
Published on: November 15, 2013
9.8K
Making flexible spin caloritronic devices with interconnected nanowire networks
Tristan da Câmara Santa Clara Gomes1, Flavio Abreu Araujo1, Luc Piraux1
1Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Place Croix du Sud 1 bte L7.04.02, 1348 Louvain-la-Neuve, Belgium.
Science Advances
|March 7, 2019
Summary
Flexible spin caloritronic devices using magnetic nanowire networks enable controlled Peltier cooling. These devices offer efficient magnetic control of heat flux for thermal management in electronics.
Area of Science:
- Physics
- Materials Science
- Nanotechnology
Background:
- Spin caloritronics merges spintronics and thermoelectricity.
- Developing efficient thermoelectric cooling is crucial for electronics.
Purpose of the Study:
- To demonstrate flexible, macroscopic spin caloritronic devices for controlled Peltier cooling.
- To investigate magnetic control of heat flux using nanowire networks.
Main Methods:
- Fabrication of 3D CoNi/Cu multilayered nanowire networks.
- Experimental characterization of thermoelectric properties and magnetic modulation.
Main Results:
- Achieved high, magnetically modulated thermoelectric power factor (7.5 mW/K²m).
- Observed large spin-dependent Seebeck (-11.5 μV/K) and Peltier (-3.45 mV) coefficients at room temperature.
Conclusions:
- Flexible spin caloritronic devices enable efficient magnetic control of heat flux.
- This offers a cost-effective pathway for large-scale thermoelectric coolers exploiting spin degree of freedom.
More Related Videos
Related Concept Videos
02:18Network Covalent Solids
16.1K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.1K
01:08Spin–Spin Coupling Constant: Overview
1.5K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.5K
01:08NMR Spectroscopy: Spin–Spin Coupling
3.2K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.2K
01:17Spin–Spin Coupling: One-Bond Coupling
1.5K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.5K
02:26Protein Networks
4.5K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.5K
02:26Protein Networks
2.8K
2.8K