Measurement of the axial rotation of nanorods trapped by a laser beam

Optical trapping of nanorods has attracted many researchers due to many potential applications of nanorods in sensor technologies. It is well known that nanorods align with the propagation axis or the polarization direction of a laser beam. However, there are only few studies about the axial rotation of nanorods. In this study, we present a method for the measurement of the rotational frequency of nanorods.

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