Plasmonic optical trap having very large active volume realized with nano-ring structure

• Main Authors: Kang, Zhiwen, Zhang, Haixi, Lu, Haifei, Xu, Jianbin, Ong, Hock-Chun, Shum, Perry Ping, Ho, Ho-Pui
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/100314; http://hdl.handle.net/10220/10974
• Institution: Nanyang Technological University

The feasibility of using gold nano-rings as plasmonic nano-optical tweezers is investigated. We found that at a resonant wavelength of λ=785 nm , the nano-ring produces a maximum trapping potential of ∼32k B T on gold nanoparticles. The existence of multiple potential wells results in a very large...