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- ARC Centre of Excellence for Engineered Quantum SystemsAU45 papers
- Queensland University of TechnologyAU24 papers
- Australian National UniversityAU20 papers
- Centre for Quantum Computation and Communication TechnologyAU15 papers
- The University of SydneyAU15 papers
- Cerro Tololo Inter-American ObservatoryCL14 papers
- UNSW SydneyAU14 papers
- Durham UniversityGB13 papers
- Australian Astronomical ObservatoryAU12 papers
- Swinburne University of TechnologyAU12 papers
- Macquarie UniversityAU11 papers
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22 papers · 1 filter
T-matrix calculation via discrete-dipole approximation, point matching and exploiting symmetry
Vincent L. Y. Loke, Timo A. Nieminen, N. R. Heckenberg +1
We present a method of incorporating the discrete dipole approximation (DDA) method with the point matching method to formulate the T-matrix for modeling arbitrarily shaped micro-s…
Symmetry and the generation and measurement of optical torque
Timo A. Nieminen, Theodor Asavei, Vincent L. Y. Loke +2
A key element in the generation of optical torque in optical traps, which occurs when electromagnetic angular momentum is transferred from the trapping beam to the trapped particle…
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…
Optical scatter imaging using digital Fourier microscopy
K. Y. T. Seet, P. Blazkiewicz, P. Meredith +1
An approach reported recently by Alexandrov et al. on optical scatter imaging, termed digital Fourier microscopy (DFM), represents an adaptation of digital Fourier holography to se…
Collecting single molecules with conventional optical tweezers
Wolfgang Singer, Timo A. Nieminen, Norman R. Heckenberg +1
The size of particles which can be trapped in optical tweezers ranges from tens of nanometres to tens of micrometres. This size regime also includes large single molecules. Here we…
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…