On the manipulation of microscopic particles by optical tweezers: Flatness based approach

Carlos Aguilar-Ibañez, Armando Barrañón Cedillo, Hebertt Sira-Ramirez, Luis Ignacio Rosas Soriano

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

© 2009 by Nova Science Publishers, Inc. All rights reserved. In this paper we present a control strategy based on a combination of the flatness approach and saturation functions to manipulate the optical tweezers system, which is a flat system, with flat outputs given by the horizontal and vertical positions. The strategy allows the optical tweezers to steer a microscopic particle from an initial position to a final desired position, following a suitable trajectory. The control strategy is proposed under the assumption that the particle is suspended in a frictionless medium. Due to the fact that the particle horizontal and vertical velocities cannot be measurable, a high-gain observer is used. The resulting controller has a relatively simple stability analysis. The control strategy performance is tested by numerical simulations.
Original languageAmerican English
Title of host publicationNew Nanotechnology Developments
Number of pages111
ISBN (Electronic)9781617618277, 9781607410287
StatePublished - 1 Jan 2009

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