68 citations · 98 across the 3 of their papers we have counts for
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Picolitre viscometry using optically rotated particles
Simon J. Parkin, Gregor Knoener, Timo A. Nieminen +2
Important aspects in the field of microrheology are the studies of the viscosity of fluids within structures with micron dimensions and fluid samples where only microlitre volumes…
Forces from highly focused laser beams: modeling, measurement and application to refractive index measurements
G. Knoener, S. Parkin, T. A. Nieminen +2
The optical forces in optical tweezers can be robustly modeled over a broad range of parameters using generalsed Lorenz-Mie theory. We describe the procedure, and show how the comb…
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…