Design of nanoslotted photonic crystal waveguide cavities for single nanoparticle trapping and detection.
We design and numerically simulate an on-chip photonic device that integrates both optical manipulation and detection functionalities for a single nanoparticle or macromolecule. A unique combination of a photonic crystal waveguide cavity and a nanoslot structure leads to a approximately 1300 times enhancement of the optical gradient trapping force compared with a conventional waveguide trapping device. Numerical simulations indicate that the designed device is capable of stably trapping a single nanoparticle inside the nanoslot cavity, and thus provides an ideal platform for single particle detection and analysis using cavity-enhanced spectroscopic technologies.
Lin
Shiyun
S
School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.
Hu
Juejun
J
Kimerling
Lionel
L
Crozier
Kenneth
K
D053758:Nanoparticles / Q000032:analysis; D052898:Optical Tweezers; D017785:Photons