1k citations · 3.2k across the 40 of their papers we have counts for
Showing 2004 · physics.opticsShow all
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physics.optics2004★ 30 cited
Optical measurement of torque exerted on an elongated object by a non-circular laser beam
Simon J. Parkin, Timo A. Nieminen, Norman R. Heckenberg +1
We have developed a scheme to measure the optical torque, exerted by a laser beam on a phase object, by measuring the orbital angular momentum of the transmitted beam. The experime…
physics.optics2004★ 341 cited
Optical microrheology using rotating laser-trapped particles
Alexis I. Bishop, Timo A. Nieminen, Norman R. Heckenberg +1
We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity…