Real-time interactive optical micromanipulation of a mixture of high- and low-index particles

Peter John Rodrigo; Vincent Ricardo Daria; Jesper Glückstad

doi:10.1364/OPEX.12.001417

Real-time interactive optical micromanipulation of a mixture of high- and low-index particles

Peter John Rodrigo^*, Vincent Ricardo Daria, Jesper Glückstad

^*Corresponding author for this work

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

73 Citations (Scopus)

Abstract

We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (n_L < n₀) and higher (n_H > n₀) refractive indices than that of the suspending medium (n₀). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime microshells (n_L ≡ 1.2) and polystyrene micro-beads (n_H = 1.57) suspended in water (n₀= 1.33).

Original language	English
Pages (from-to)	1417-1425
Number of pages	9
Journal	Optics Express
Volume	12
Issue number	7
DOIs	https://doi.org/10.1364/OPEX.12.001417
Publication status	Published - Apr 2004
Externally published	Yes

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title = "Real-time interactive optical micromanipulation of a mixture of high- and low-index particles",

abstract = "We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (nL < n0) and higher (nH > n0) refractive indices than that of the suspending medium (n0). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime microshells (nL ≡ 1.2) and polystyrene micro-beads (nH = 1.57) suspended in water (n0= 1.33).",

author = "Rodrigo, {Peter John} and Daria, {Vincent Ricardo} and Jesper Gl{\"u}ckstad",

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AU - Rodrigo, Peter John

AU - Daria, Vincent Ricardo

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Y1 - 2004/4

N2 - We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (nL < n0) and higher (nH > n0) refractive indices than that of the suspending medium (n0). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime microshells (nL ≡ 1.2) and polystyrene micro-beads (nH = 1.57) suspended in water (n0= 1.33).

AB - We demonstrate real-time interactive optical micromanipulation of a colloidal mixture consisting of particles with both lower (nL < n0) and higher (nH > n0) refractive indices than that of the suspending medium (n0). Spherical high- and low-index particles are trapped in the transverse plane by an array of confining optical potentials created by trapping beams with top-hat and annular cross-sectional intensity profiles, respectively. The applied method offers extensive reconfigurability in the spatial distribution and individual geometry of the optical traps. We experimentally demonstrate this unique feature by simultaneously trapping and independently manipulating various sizes of spherical soda lime microshells (nL ≡ 1.2) and polystyrene micro-beads (nH = 1.57) suspended in water (n0= 1.33).

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DO - 10.1364/OPEX.12.001417

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JO - Optics Express

JF - Optics Express

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ER -

Real-time interactive optical micromanipulation of a mixture of high- and low-index particles

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