University of Twente Student Theses


Rotating a gold nanorod using optically induced torque

Hendrickx, Nico and Hond, Kit de (2014) Rotating a gold nanorod using optically induced torque.

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Abstract:In this thesis the possible torque on a gold nanoparticle with an aspect ratio of 7 is investigated using the discrete dipole approximation (DDA). For the different plasmon resonance modes the extinction and torque spectra are computed and the electric field is visualised together with the charge distribution. We found that the torque is at a maximum for particles oriented at 45� relative to the polarization and k-vector of the incident light. Furthermore the dipole resonance rendered the largest torque. For a particle with a short radius of 19nm this maximum torque was determined to be 1:15 � 10
Item Type:Essay (Bachelor)
Faculty:TNW: Science and Technology
Subject:33 physics
Programme:Applied Physics BSc (56962)
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