Monolayer Conveyor for Stably Trapping and Transporting Sub-1 nm Particles

Mohammad Danesh, Mehdi Jafary Zadeh, Tianhang Zhang, Xiaohe Zhang, Bing Gu, Jin Sheng Lu, Tun Cao, Zhengtong Liu, Andrew T.S. Wee, Min Qiu, Qiaoliang Bao, Stefan Maier, Cheng Wei Qiu

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

Efficient manipulation of nanoparticles and single molecules has always been of great interest and potential in nanotechnology. However, many challenges still remain in effectively functionalizing structures for this purpose. In this work, taking advantage of graphene's Dirac plasmon for its extreme confinement and tunability, a monolayer conveyor along which the position of optical potential well can be dynamically controlled is theoretically proposed. It is shown that by tuning a single voltage, one can manipulate the resonance along the graphene nanoribbon by changing graphene's effective surface plasmons wavelength. A configuration of monolayer graphene conveyor is proposed and Langevin dynamics reveals that a prototypical nanoparticle (1 nm size) can be effectively confined and transported along the device with proper external bias voltage. Hence, this work successfully proposes a promising avenue toward reconfigurable nanomanipulation of sub-1 nm nanoparticles, and goes beyond the current state-of-the-art of optical micrometer/nanometer-sized particles manipulation with optical tweezers and nanoplasmonic tweezers.

Original languageEnglish
Article number2000030
Number of pages7
JournalLaser & Photonics Reviews
Volume14
Issue number8
DOIs
Publication statusPublished - Aug 2020

Keywords

  • Fermi level
  • graphene
  • nanoplasmonic tweezers
  • optical force

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