Optical manipulation of neutral nanoparticles suspended in a microfluidic channel
作者： Philippe Ben-Abdallah , Ahmed Ould El Moctar , Bo Ni , Nadine Aubry , Pushpendra Singh
DOI: 10.1063/1.2191572
关键词: Nanotechnology 、 Nanoparticle 、 Microfluidics 、 Microfluidic channel 、 Radiation pressure 、 Brownian motion 、 Optical control 、 Materials science
摘要: An optical method to deterministically manipulate nanosized particles in suspensions within confined microfluidic devices is introduced. We show that under appropriate conditions strong dielectrophoretic forces several orders of magnitude larger than the Brownian force can be generated using an external actuation. A self-consistent coupled point-dipole model includes redistribution charges on channel boundaries allows us specify underlying mechanisms and estimate experienced by a nanoparticle.
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