Optical trapping and assembly of particle clusters using hybrid plasmonic-photonic nanotweezers

Christophe Pin; Giovanni Magno; Aurore Ecarnot; Emmanuel Picard; Emmanuel Hadji; Vy Yam; Frédérique de Fornel; Béatrice Dagens; Benoît Cluzel

doi:10.1117/12.2616030

27 October 2021 Optical trapping and assembly of particle clusters using hybrid plasmonic-photonic nanotweezers

Christophe Pin, Giovanni Magno, Aurore Ecarnot, Emmanuel Picard, Emmanuel Hadji, Vy Yam, Frédérique de Fornel, Béatrice Dagens, Benoît Cluzel

Author Affiliations +

Proceedings Volume 11926, Optical Manipulation and Structured Materials Conference 2021; 119260E (2021) https://doi.org/10.1117/12.2616030
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

Plasmonic nanotweezers are renowned tools for trapping and handling nanoparticles via near-field optical forces. In this work, we investigate the optical trapping of polymer beads using plasmonic nanotweezers integrated on a hybrid photonic–plasmonic chip. A periodic chain of gold nanorods coupled to a silicon photonic waveguide is used to trap single beads as well as self-assembled bead clusters. We evaluate the trapping efficiency and the trapping potential of the nanotweezers by particle tracking and statistical analysis. Vacancy-free clusters composed of four and seven beads are found to be the most stable due to the simultaneous actions of both optical and electrostatic forces. Those results evidence the role of plasmonic nanotweezers for efficient particle assembly and manipulation at the nanoscale in future lab-on-achip applications.

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Christophe Pin, Giovanni Magno, Aurore Ecarnot, Emmanuel Picard, Emmanuel Hadji, Vy Yam, Frédérique de Fornel, Béatrice Dagens, and Benoît Cluzel "Optical trapping and assembly of particle clusters using hybrid plasmonic-photonic nanotweezers", Proc. SPIE 11926, Optical Manipulation and Structured Materials Conference 2021, 119260E (27 October 2021); https://doi.org/10.1117/12.2616030

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