Gold nanoparticles moving in an aqueous solution under an optical vortex lattice are shown to present a complex collective optofluidic dynamics. Above a critical field intensity and concentration, the system presents a spontaneous transition toward synchronized motion, driven by the interplay between nonconservative optical forces, thermal fluctuations, and hydrodynamic pairing. Above criticality, the system exhibits swarm behavior with strong unidirectional currents of nanoparticles reaching speeds of centimeters per second. This relatively simple optofluidic setup offers an alternative way to control nanoparticle transport in aqueous environments.
Monday, January 21, 2019
Emergence of collective dynamics of gold nanoparticles in an optical vortex lattice
R. Delgado-Buscalioni, M. Meléndez, J. Luis-Hita, M. I. Marqués, and J. J. Sáenz
Gold nanoparticles moving in an aqueous solution under an optical vortex lattice are shown to present a complex collective optofluidic dynamics. Above a critical field intensity and concentration, the system presents a spontaneous transition toward synchronized motion, driven by the interplay between nonconservative optical forces, thermal fluctuations, and hydrodynamic pairing. Above criticality, the system exhibits swarm behavior with strong unidirectional currents of nanoparticles reaching speeds of centimeters per second. This relatively simple optofluidic setup offers an alternative way to control nanoparticle transport in aqueous environments.
Gold nanoparticles moving in an aqueous solution under an optical vortex lattice are shown to present a complex collective optofluidic dynamics. Above a critical field intensity and concentration, the system presents a spontaneous transition toward synchronized motion, driven by the interplay between nonconservative optical forces, thermal fluctuations, and hydrodynamic pairing. Above criticality, the system exhibits swarm behavior with strong unidirectional currents of nanoparticles reaching speeds of centimeters per second. This relatively simple optofluidic setup offers an alternative way to control nanoparticle transport in aqueous environments.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment