Plasmon Resonances in 1D Nanowire Arrays and 3D Nanowire Networks of Topological Insulators and Metals

Olga Caballero-Calero; Alejandra Ruiz-Clavijo; Cristina V Manzano; Marisol Martín-González; Gaspar Armelles

doi:10.3390/nano13010154

Plasmon Resonances in 1D Nanowire Arrays and 3D Nanowire Networks of Topological Insulators and Metals

Nanomaterials (Basel). 2022 Dec 29;13(1):154. doi: 10.3390/nano13010154.

Authors

Olga Caballero-Calero¹, Alejandra Ruiz-Clavijo¹, Cristina V Manzano¹, Marisol Martín-González¹, Gaspar Armelles¹

Affiliation

¹ Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC) Isaac Newton, 8, Tres Cantos, E-28760 Madrid, Spain.

Abstract

The 1D nanowire arrays and 3D nanowire networks of topological insulators and metals have been fabricated by template-assisted deposition of Bi₂Te₃ and Ni inside anodic aluminum oxide (AAO) templates, respectively. Despite the different origins of the plasmon capabilities of the two materials, the results indicate that the optical response is determined by plasmon resonances, whose position depends on the nanowire interactions and material properties. Due to the thermoelectric properties of Bi₂Te₃ nanowires, these plasmon resonances could be used to develop new ways of enhancing thermal gradients and their associated thermoelectric power.

Keywords: plasmon resonances; thermoelectric materials; topological insulators.

Grants and funding

This research was funded by the MINECO under grant number PID2020-118430GB-100 and by the Ramon Areces’ Foundation through the micro-TENERGY project. C.V.M. would like to acknowledge financial support from “Atracción de Talento Investigador” de la Comunidad de Madrid, contract 2019-T1/IND-13541. The authors would also like to acknowledge the service from the MiNa Laboratory at IMN, and its funding from CM (project SpaceTec, S2013/ICE2822), MINECO (project CSIC13-4E-1794), and EU (FEDER, FSE).