Sequential trapping of single nanoparticles using a gold plasmonic nanohole array

Abstract

We have used a gold nanohole array to trap single polystyrene nanoparticles, with a mean diameter of 30 nm, into separated hot spots located at connecting nanoslot regions. A high trap stiffness of approximately 0.85 fN/(nmmW) at a low incident laser intensity of ~0.51 mW/um2 at 980 nm was obtained. The experimental results were compared to the simulated trapping force and a reasonable match was achieved. This plasmonic array is useful for lab-on-a-chip applications and has particular appeal for trapping multiple nanoparticles with predefined separations or arranged in patterns in order to study interactions between them.

References in corpus (3)

• 3D manipulation with scanning near field optical nanotweezers
• Unraveling the optomechanical nature of plasmonic trapping
• Theory of self-induced back-action optical trapping in nanophotonic systems

Cited by in corpus (7)

• Plasmonic Optical Tweezers based on Nanostructures: fundamentals, advances and prospects
• Fano-Resonant, Asymmetric, Metamaterial-Assisted Tweezers for Single Nanoparticle Trapping
• Quantifying the Role of the Surfactant and the Thermophoretic Force in Plasmonic Nano-Optical Trapping
• Single Photon Source from a Nanoantenna-Trapped Single Quantum Dot
• Dynamic Multiple Nanoparticle Trapping using Metamaterial Plasmonic Tweezers
• Efficient Microparticle Trapping with Plasmonic Annular Apertures Arrays
• Plasmonic tweezers based on connected nanoring apertures