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Moving average process underlying the holographic–optical–tweezers experiments
Applied Optics, 2013We study the statistical properties of recordings that contain time-dependent positions of a bead trapped in optical tweezers. Analysis of such a time series indicates that the commonly accepted model, i.e., the autoregressive process of first-order, is not sufficient to fit the data.
Jakub, Ślęzak +3 more
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2012
Holographic optical tweezers (HOT) employ a relatively simple form of holographic beam-shaping that produces discrete, point-like intensity peaks in the optical trapping plane, each of which acts as a single optical tweezer. For each tweezer, lateral position and axial position can be determined individually by means of accordingly prepared holograms ...
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Holographic optical tweezers (HOT) employ a relatively simple form of holographic beam-shaping that produces discrete, point-like intensity peaks in the optical trapping plane, each of which acts as a single optical tweezer. For each tweezer, lateral position and axial position can be determined individually by means of accordingly prepared holograms ...
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Holographic optical tweezers induced hierarchical supramolecular organization
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011Nanocontainers, i.e. particles at the micro and nano scale that can host guest molecules, are of highest interest for various applications especially in nanoscience and biomedicine. Popular examples are the delivery of phar-maceuticals or active agents to specific cell, nerve or tissue domains or the organization of larger scaffolds of artificial ...
Woerdemann M. +4 more
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Holographic optical tweezers in the Fresnel regime
SPIE Proceedings, 2004We present a flexible setup for steering of laser tweezers using a high resolution spatial light modulator (SLM). Moving of e.g. trapped cells in the focal plane of the microscope objective is possible without the need for time consuming re-calculation of holograms.
Alexander Jesacher +3 more
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Laser Tweezers and Holographic Optical Trapping
Optics and Photonics News, 2009Tractor beams have long been a staple of science fiction, and now they have a real-life equivalent on the micro-scale. Laser tweezers can trap and hold tiny objects in three dimensions and may one day be used to manufacture micro- and nano-scale products.
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Digital holographic microscopy combined with optical tweezers
SPIE Proceedings, 2011While optical tweezers have been widely used for the manipulation and organization of microscopic objects in three dimensions, observing the manipulated objects along axial direction has been quite challenging. In order to visualize organization and orientation of objects along axial direction, we report development of a Digital holographic ...
Nelson Cardenas +2 more
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Tunable photonic crystals by holographic optical tweezers
SPIE Proceedings, 2016We demonstrate experimentally, an optically controlled dynamic photonic bandgap material, and to characterize its properties. The PhC device consists of colloidal particles assembled, using Holographic Optical Tweezers, into periodic structures located between prepositioned optical fibers. The positions of the optical traps can be modified in-situ in a
Maya Yevnin +2 more
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Improving Spot Uniformity in Holographic Optical Tweezers
Optics in the Life Sciences, 2011We have developed a method for compensating for crosstalk between adjacent pixels in liquid crystal based spatial light modulators. The method decreases the uniformity error of the trap intensities in holographic optical tweezers (HOT) systems.
Martin Persson +3 more
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Controlled aerosol manipulation using holographic optical tweezers
SPIE Proceedings, 2006We demonstrate the use of holographic optical tweezers for the optical trapping and manipulation of arrays of airborne water droplets (aerosols). Making use of a phase-only spatial light modulator we present evidence of stable, interactive manipulation of both single and multiple aerosol droplets, of the order of 10 microns in diameter, and also their ...
D. R. Burnham, D. McGloin
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Investigating hydrodynamic synchronisation using holographic optical tweezers
SPIE Proceedings, 2014Coordinated motion at low Reynolds number is widely observed in biological micro-systems, but the underlying mechanisms are often unclear. A holographic optical tweezers system is used to experimentally study this phenomenon, by employing optical forces to drive a pair of coplanar microspheres in circular orbits with a constant tangential force.
Box, Stuart +8 more
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