Refractometry of organosilica microspheres

Katrina Y T Seet; Robert Vogel; Timo A. Nieminen; Gregor Knöner; Halina Rubinsztein-Dunlop; Matt Trau; Andrei V. Zvyagin

doi:10.1364/AO.46.001554

Refractometry of organosilica microspheres

Katrina Y T Seet^*, Robert Vogel, Timo A. Nieminen, Gregor Knöner, Halina Rubinsztein-Dunlop, Matt Trau, Andrei V. Zvyagin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

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 organosilica beads versus wavelength, which is obtained by a standard laboratory spectrometer. The second method relies on the measurable trapping potential of these beads in the focused light beam (laser tweezers). Polystyrene beads were used to test these methods, and the determined dispersion curves of refractive-index values have been found accurate. The refractive index of organosilica beads has been determined to range from 1.60 to 1.51 over the wavelength range of 300-1100 nm.

Original language	English
Pages (from-to)	1554-1561
Number of pages	8
Journal	Applied Optics
Volume	46
Issue number	9
DOIs	https://doi.org/10.1364/AO.46.001554
Publication status	Published - 20 Mar 2007
Externally published	Yes

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title = "Refractometry of organosilica microspheres",

abstract = "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 organosilica beads versus wavelength, which is obtained by a standard laboratory spectrometer. The second method relies on the measurable trapping potential of these beads in the focused light beam (laser tweezers). Polystyrene beads were used to test these methods, and the determined dispersion curves of refractive-index values have been found accurate. The refractive index of organosilica beads has been determined to range from 1.60 to 1.51 over the wavelength range of 300-1100 nm.",

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AU - Vogel, Robert

AU - Nieminen, Timo A.

AU - Knöner, Gregor

AU - Rubinsztein-Dunlop, Halina

AU - Trau, Matt

AU - Zvyagin, Andrei V.

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Y1 - 2007/3/20

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AB - 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 organosilica beads versus wavelength, which is obtained by a standard laboratory spectrometer. The second method relies on the measurable trapping potential of these beads in the focused light beam (laser tweezers). Polystyrene beads were used to test these methods, and the determined dispersion curves of refractive-index values have been found accurate. The refractive index of organosilica beads has been determined to range from 1.60 to 1.51 over the wavelength range of 300-1100 nm.

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Refractometry of organosilica microspheres

Abstract

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