title: Size-scaling in optical trapping of silicon nanowires.
abstract: We investigate size-scaling in optical trapping of ultrathin silicon nanowires showing how length regulates their Brownian dynamics, optical forces, and torques. Force and torque constants are measured on nanowires of different lengths through correlation function analysis of their tracking signals. Results are compared with a full electromagnetic theory of optical trapping developed in the transition matrix framework, finding good agreement.
authors.affiliation: CNR-IPCF, Istituto per i Processi Chimico-Fisici, I-98158 Messina, Italy.
authors.forename: Alessia
authors.initials: A
authors.lastname: Irrera
authors.forename: Pietro
authors.initials: P
authors.lastname: Artoni
authors.forename: Rosalba
authors.initials: R
authors.lastname: Saija
authors.forename: Pietro G
authors.initials: PG
authors.lastname: Gucciardi
authors.forename: Maria Antonia
authors.initials: MA
authors.lastname: Iatì
authors.forename: Ferdinando
authors.initials: F
authors.lastname: Borghese
authors.forename: Paolo
authors.initials: P
authors.lastname: Denti
authors.forename: Fabio
authors.initials: F
authors.lastname: Iacona
authors.forename: Francesco
authors.initials: F
authors.lastname: Priolo
authors.forename: Onofrio M
authors.initials: OM
authors.lastname: Maragò
mesh_terms: D003198:Computer Simulation; D004058:Diffusion; D008956:Models, Chemical; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D052898:Optical Tweezers; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*
chemical_list: D012825:Silicon