Zhiwen Kang, Haixi Zhang, Haifei Lu, Jianbin Xu, Hock-Chun Ong, Ping Shum, and Ho-Pui Ho
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 ∼32kBT on gold nanoparticles. The existence of multiple potential wells results in a very large active volume of ∼106 nm3 for trapping the target particles. The report nano-ring design provides an effective approach for manipulating nano-objects in very low concentration into the high-field region and is well suited for integration with microfluidics for lab-on-a-chip applications.
DOI
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 ∼32kBT on gold nanoparticles. The existence of multiple potential wells results in a very large active volume of ∼106 nm3 for trapping the target particles. The report nano-ring design provides an effective approach for manipulating nano-objects in very low concentration into the high-field region and is well suited for integration with microfluidics for lab-on-a-chip applications.
DOI
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