341 citations · 611 across the 3 of their papers we have counts for
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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…
Optical application and measurement of torque on microparticles of isotropic nonabsorbing material
Alexis I. Bishop, Timo A. Nieminen, Norman R. Heckenberg +1
We show how it is possible to controllably rotate or align microscopic particles of isotropic nonabsorbing material in a TEM00 Gaussian beam trap, with simultaneous measurement of…
Numerical Modelling of Optical Trapping
T. A. Nieminen, H. Rubinsztein-Dunlop, N. R. Heckenberg +1
Optical trapping is a widely used technique, with many important applications in biology and metrology. Complete modelling of trapping requires calculation of optical forces, prima…