Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Topological valley plasmon transport in bilayer graphene metasurfaces for sensing applications

Not Accessible

Your library or personal account may give you access

Abstract

Topologically protected plasmonic modes located inside topological bandgaps are attracting increasing attention, chiefly due to their robustness against disorder-induced backscattering. Here, we introduce a bilayer graphene metasurface that possesses plasmonic topological valley interface modes when the mirror symmetry of the metasurface is broken by horizontally shifting the lattice of holes of the top layer of the two freestanding graphene layers in opposite directions. In this configuration, light propagation along the domain-wall interface of the bilayer graphene metasurface shows unidirectional features. Moreover, we have designed a molecular sensor based on the topological properties of this metasurface using the fact that the Fermi energy of graphene varies upon chemical doping. This effect induces strong variation of the transmission of the topological guided modes, which can be employed as the underlying working principle of gas sensing devices. Our work opens up new ways of developing robust integrated plasmonic devices for molecular sensing.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
All-optical control of topological valley transport in graphene metasurfaces

Yupei Wang, Jian Wei You, and Nicolae C. Panoiu
Opt. Express 31(6) 10401-10410 (2023)

Slow light waveguides in topological valley photonic crystals

Hironobu Yoshimi, Takuto Yamaguchi, Yasutomo Ota, Yasuhiko Arakawa, and Satoshi Iwamoto
Opt. Lett. 45(9) 2648-2651 (2020)

Topological plasmons in stacked graphene nanoribbons

Sheng-Xuan Xia, Di Zhang, Zizhuo Zheng, Xiang Zhai, Hongju Li, Jian-Qiang Liu, Ling-Ling Wang, and Shuang-Chun Wen
Opt. Lett. 48(3) 644-647 (2023)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved