We establish the time-averaged total force on a subwavelength-sized particle in a
time-harmonic-varying field. Our analysis is not restricted to the spatial dependence of the
incident field. We discuss the addition of the radiative reaction term to the polarizability to
deal correctly with the scattering force. As an illustration, we assess the degree of accuracy
of several previously established polarizability models.
© 2000 Optical Society of America
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