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Nanophotonic circuits are regarded as a transformative technology that can overcome many challenges faced by electronic circuits, particularly concerning operating frequency limits. However, the development of nanophotonic circuits utilizing plasmons is strongly hampered by the absence of fundamental building blocks such as long-lived deep-subwavelength plasmons, plasmonic waveguides, and field-effect plasmonic transistors (FEPTs). Here, we demonstrate Luttinger-liquid FEPTs based on metallic–semiconducting carbon nanotube junctions. In these devices, the propagation of plasmon waves across the junction can be efficiently controlled by electrostatic gating. Theoretical analysis and numerical simulations indicate that the reflection/transmission of Luttinger-liquid plasmons at junctions can be captured well by the Fresnel equation. This result suggests that the classical Fresnel law persists for Luttinger-liquid plasmons with a reduced dimensionality. Our study not only uncovers the fundamental propagation characteristics of Luttinger-liquid plasmons at junctions but also introduces a new category of FEPTs that could facilitate the development of high-frequency nanophotonic circuits.

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• In Copyright
  

  This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © 2025 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.5c00221

Keyword: Plasmon, Carbon nanotube, Nanophotonic circuit

Date published: 2025-04-02

Publisher: American Chemical Society (ACS)

Journal:

• Nano Letters (ISSN: 15306984) vol. 25 issue. 13 p. 5334-5341

Funding:

• Japan Society for the Promotion of Science 23H02052
• Ministry of Education, Culture, Sports, Science and Technology
• National Key Research and Development Program of China 2021YFA1202902
• National Key Research and Development Program of China 2022YFA1402702
• National Research Foundation of Korea NRF-2021R1A2C2012617
• National Research Foundation of Korea NRF-RS-2024-00454528
• Core Research for Evolutional Science and Technology JPMJCR24A5
• Japan Society for the Promotion of Science 21H05233
• National Natural Science Foundation of China 12374292

Manuscript type: Author's version (Accepted manuscript)

MDR DOI:

First published URL: https://doi.org/10.1021/acs.nanolett.5c00221

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Updated at: 2026-07-28 15:08:20 +0900

Published on MDR: 2026-07-28 16:27:17 +0900