PlumX Metrics
Embed PlumX Metrics

Graphene plasmon resonances for electrically-tunable sub-femtometer dimensional resolution

Nanomaterials, ISSN: 2079-4991, Vol: 10, Issue: 7, Page: 1-10
2020
  • 47
    Citations
  • 0
    Usage
  • 8
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

A coupled graphene structure (CGS) is proposed to obtain an electrically tunable sub-femtometer (sub-fm) dimensional resolution. According to analytical and numerical investigations, the CGS can support two branches of localized surface plasmon resonances (LSPRs), which park at the dielectric spacer between two pieces of graphene. The coupled efficiencies of the odd-order modes are even four orders of magnitude higher than that of the even-order modes. In particular, a sub-fm resolution for detecting the change in the spacer thickness can be reached using the lowest order LSPR mode. The LSPR wavelength and the dimensional differential resolution can be electrically-tuned from 9.5 to 33 µm and from 4.3 to 15 nm/pm, respectively, by modifying the chemical potential of the graphene via the gate voltage. Furthermore, by replacing the graphene ribbon (GR) at the top of the CGS with multiple GRs of different widths, a resonant frequency comb in the absorption spectrum with a tunable frequency interval is generated, which can be used to detect the changes in spacer thicknesses at different locations with sub-fm resolution.

Bibliographic Details

Wu, Zhiyong; Zhang, Lei; Zhang, Min; Li, Irene Ling; Su, Hong; Zhao, Huancheng; Ruan, Shuangchen; Liang, Huawei

MDPI AG

Chemical Engineering; Materials Science

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know