68 citations · 191 across the 4 of their papers we have counts for
4 papers
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…
Refractometry of organosilica microspheres
Katrina Y. T. Seet, Robert Vogel, Timo A. Nieminen +4
The refractive index of novel organosilica (nano/micro)material is determined using two methods. The first method is based on analysis of optical extinction efficiency of organosil…
Measurement of refractive index of single microparticles
Gregor Knoener, Simon Parkin, Timo A. Nieminen +2
The refractive index of single microparticles is derived from precise measurement and rigorous modeling of the stiffness of a laser trap. We demonstrate the method for particles of…
Measurement of the total optical angular momentum transfer in optical tweezers
Simon Parkin, Gregor Knoener, Timo A. Nieminen +2
We describe a way to determine the total angular momentum, both spin and orbital, transferred to a particle trapped in optical tweezers. As an example an LG02 mode of a laser beam…