Size-Scaling in Optical Trapping of Silicon Nanowires

作者：Irrera Alessia; Artoni Pietro; Saija Rosalba; Gucciardi Pietro G; Iati Maria Antonia; Borghese Ferdinando; Denti Paolo; Iacona Fabio; Priolo Francesco; Marago Onofrio M^*

来源：Nano Letters, 2011, 11(11): 4879-4884.

DOI：10.1021/nl202733j

• Size-scaling
• optical trapping
• silicon nanowires
• electromagnetic scattering theory

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.

• 出版日期2011-11