Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Vincent L. Y. Loke"'
Autor:
Timo A Nieminen, Mark L Watson, Vincent L Y Loke, Alexander B Stilgoe, Halina Rubinsztein-Dunlop
Publikováno v:
Journal of Optics. 24:124001
A circularly polarized focussed Gaussian beam carries total angular momentum of ℏ per photon about the beam axis, but less than ℏ spin per photon, due to the focussing of the beam. The remainder of the angular momentum is carried as orbital angul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3bd06ece373f3b5a53a15432a9061fd
https://doi.org/10.1088/2040-8986/ac9c6e
https://doi.org/10.1088/2040-8986/ac9c6e
Autor:
Timo A. Nieminen, Vincent L. Y. Loke, Anatolii V. Kashchuk, Halina Rubinsztein-Dunlop, Alexander B. Stilgoe
Publikováno v:
Physical Review A. 99
We present an accurate and efficient method for calculating the image of a mesoscopic particle that is captured using a high-numerical-aperture objective lens. We test various scattering models of silica, plastic, and birefringent vaterite spheres in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28865d74ef9a2d4b677cd607d5f0d58d
https://doi.org/10.1103/physreva.99.013818
https://doi.org/10.1103/physreva.99.013818
Autor:
Theodor Asavei, Timo A Nieminen, Vincent L Y Loke, Alexander B Stilgoe, Richard Bowman, Daryl Preece, Miles J Padgett, Norman R Heckenberg, Halina Rubinsztein-Dunlop
Publikováno v:
New Journal of Physics, Vol 15, Iss 6, p 063016 (2013)
We demonstrate the control and rotation of an optically trapped object, an optical paddle-wheel, with the rotation direction normal to the beam axis. This is in contrast to the usual situation where the rotation is about the beam axis. The paddle-whe
Externí odkaz:
https://doaj.org/article/ec1bcc16b10340df9b0440b62270e6b9
Autor:
Alexander B. Stilgoe, Vincent L. Y. Loke, Nathaniel du Preez-Wilkinson, Halina Rubinsztein-Dunlop, Ann A. M. Bui, Timo A. Nieminen
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 146:59-80
Since their development in the 1980s, optical tweezers have become a widely used and versatile tool in many fields. Outstanding applications include the quantitative measurement of forces in cell biology and biophysics. Computational modelling of opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2da1f1bebbbe6f13e277a7eb2452322f
https://doi.org/10.1016/j.jqsrt.2014.04.003
https://doi.org/10.1016/j.jqsrt.2014.04.003
Autor:
Vincent L. Y. Loke, Thomas Wriedt, Timo Hoja, Norbert Riefler, Lutz Mädler, Torsten Prenzel, Andreas Mehner
Publikováno v:
Thin Solid Films. 531:93-98
The optical properties of sol–gel silica coatings on silicon wafers are investigated. During the sol–gel process the samples are subjected to heat treatment with a range of different temperatures on which the resultant film thicknesses and refrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9d089ff90cb70f17f815929fcbff53f
https://doi.org/10.1016/j.tsf.2012.12.038
https://doi.org/10.1016/j.tsf.2012.12.038
Autor:
Halina Rubinsztein-Dunlop, Timo A. Nieminen, Norman R. Heckenberg, Vincent L. Y. Loke, Alexander B. Stilgoe
Publikováno v:
Journal of Modern Optics. 58:528-544
Due to copyright restrictions, the access to the full text of this article is only available via subscription. We review the use of the T-matrix description of scattering, or the T-matrix method, for the calculation of optical forces and torques, esp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd6b7418a868ddeef2d54c7dd646c2e1
https://doi.org/10.1080/09500340.2010.528565
https://doi.org/10.1080/09500340.2010.528565
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 110:1460-1471
We present a method of incorporating the discrete dipole approximation (DDA) method with the point matching method to formulate the T-matrix for modelling arbitrarily shaped microsized objects. The T-matrix elements are calculated using point matchin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ef5e5e53faf7139d75a3183a0122f7a
https://doi.org/10.1016/j.jqsrt.2009.01.013
https://doi.org/10.1016/j.jqsrt.2009.01.013
Autor:
Vincent L. Y. Loke, Norman R. Heckenberg, Timo A. Nieminen, Theodor Asavei, Halina Rubinsztein-Dunlop
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 110:1472-1482
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 by scattering, is the symmetries of the scattering particle and the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cba90fb502ece43e57c8a40e36fc3f2
https://doi.org/10.1016/j.jqsrt.2009.03.013
https://doi.org/10.1016/j.jqsrt.2009.03.013
Autor:
Simon Parkin, Theodore Asavei, Norman R. Heckenberg, Timo A. Nieminen, Halina Rubinsztein-Dunlop, Martin Persson, Vincent L. Y. Loke, Robert Vogel, Ying S. Hu
Publikováno v:
PIERS Online. 4:381-385
Optical trapping and micromanipulation has developed from an interesting novelty to a powerful and widely used tool, with the capability to move or trap microscopic live biological specimens and measure forces on the order of piconewtons, typical of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66a53f4063a584e54b705674ffe031d4
https://doi.org/10.2529/piers071101222308
https://doi.org/10.2529/piers071101222308
Autor:
Vincent L. Y. Loke, Agata M. Brańczyk, Timo A. Nieminen, Alexander B. Stilgoe, Halina Rubinsztein-Dunlop, Gregor Knöner, Norman R. Heckenberg
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 9:S196-S203
We describe a toolbox, implemented in Matlab, for the computational modelling of optical tweezers. The toolbox is designed for the calculation of optical forces and torques, and can be used for both spherical and nonspherical particles, in both Gauss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd7a2fe964c922dd754e7f0994398934
https://doi.org/10.1088/1464-4258/9/8/s12
https://doi.org/10.1088/1464-4258/9/8/s12