Opto-mechanical force mapping of deep subwavelength plasmonic modes

John Kohoutek, Dibyendu Dey, Alireza Bonakdar, Ryan Gelfand, Alejandro Sklar, Omer Gokalp Memis, Hooman Mohseni*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


We present spatial mapping of optical force generated near the hot spot of a metal-dielectric-metal bowtie nanoantenna at a wavelength of 1550 nm. Maxwell's stress tensor method has been used to simulate the optical force and it agrees well with the experimental data. This method could potentially produce field intensity and optical force mapping simultaneously with a high spatial resolution. Detailed mapping of the optical force is crucial for understanding and designing plasmonic-based optical trapping for emerging applications such as chip-scale biosensing and optomechanical switching.

Original languageEnglish (US)
Pages (from-to)3378-3382
Number of pages5
JournalNano letters
Issue number8
StatePublished - Aug 10 2011


  • AFM
  • NSOM
  • Optical force
  • atomic force microscope
  • biosensing
  • surface plasmon resonance

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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