Characterisation of Au nanorod dynamics in optical tweezers via localised surface plasmon resonance spectroscopy

Ana Andres-Arroyo; Scott Kemp; Wen Jun Toe; Fan Wang; Victoria Coleman; Peter J. Reece

doi:10.1117/12.2062465

16 September 2014 Characterisation of Au nanorod dynamics in optical tweezers via localised surface plasmon resonance spectroscopy

Ana Andres-Arroyo, Scott Kemp, Wen Jun Toe, Fan Wang, Victoria Coleman, Peter J. Reece

Author Affiliations +

Proceedings Volume 9164, Optical Trapping and Optical Micromanipulation XI; 91641I (2014) https://doi.org/10.1117/12.2062465
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

We present a study of the trapping properties of Au nanorods of different aspect ratios in an optical tweezers and comparison with other characterization techniques like transmission electron microscope (TEM) imaging and dynamic light scattering (DLS). This study provides information on the dynamics and orientation of Au nanorods inside an optical trap based on a time study of their localised surface plasmon resonance (LSPR) features. The results indicate that the orientation of the Au nanorods trapped in our optical tweezers varies with time and LSPR spectra can provide information on the angle of the nanorod with respect to the direction of propagation of the trapping laser.

Citation Download Citation

Ana Andres-Arroyo, Scott Kemp, Wen Jun Toe, Fan Wang, Victoria Coleman, and Peter J. Reece "Characterisation of Au nanorod dynamics in optical tweezers via localised surface plasmon resonance spectroscopy", Proc. SPIE 9164, Optical Trapping and Optical Micromanipulation XI, 91641I (16 September 2014); https://doi.org/10.1117/12.2062465

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