Theoretical comparison of optical traps created by standing wave and single beam

Zemánek, Pavel; Jonáš, Alexandr; Jákl, Petr; Ježek, Jan; Šerý, Mojmı́r; Liška, Marek

doi:10.1016/s0030-4018(03)01409-3

Cited by 67 publications

(33 citation statements)

References 33 publications

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“…This situation is similar to optical trapping using standing Gaussian beams. [8][9][10] Recently another family of non-diffracting beams having angular momentum properties was found. This non-diffracting optical vortex was also used for 2D optical manipulation, optical levitation, and rotation of micro-objects.…”

Section: Introductionmentioning

confidence: 99%

Optical trapping in counter-propagating Bessel beams

Čižmár¹,

Garcés-Chávez

Dholakia

et al. 2004

SPIE Proceedings

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We present and analyse a method that uses an interference of counter-propagating Bessel beams for 3D confinement of high-index micro-particles in array of optical traps. Due to this interference a sort of standing wave (SW) is created with intensity maxima separated by more than half a wavelength of the trapping beam and arranged along propagation axis. Thanks to the non-diffracting nature of this beam the region of SW existence is much longer comparing to the Gaussian beam of the similar beam diameter. Steep axial optical intensity gradients cause axial optical force that enables 3D particle confinement. Moreover, the self-healing property of Bessel beam suppresses the beam modification due to the presence of confined objects.

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Section: Introductionmentioning

confidence: 99%

Optical trapping in counter-propagating Bessel beams

Čižmár¹,

Garcés-Chávez

Dholakia

et al. 2004

SPIE Proceedings

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“…In contrast, single beam delivery is based on the so-called scattering force associated with the radiation pressure. It has been shown that for smaller particles the gradient force in the standing wave can be several orders of magnitude larger than the scattering force in a single beam of the corresponding total power [37]. Therefore, especially the particles of sizes in the range of hundreds of nanometres should be delivered faster by the OCB.…”

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confidence: 99%

Surface delivery of a single nanoparticle under moving evanescent standing-wave illumination

Šiler¹,

Čižmár²,

Jonáš

et al. 2008

New J. Phys.

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“…This was first realized by reflecting a laser beam off the mirrored top surface of a sample chamber to generate the standing wave (52,53). Small particles (d < 0.1 l) could be stably confined with the trap stiffness increased 10-100 times over that obtained using conventional optical tweezers (54).…”

Section: Extending the Range And Increasing The Trap Strengthmentioning

confidence: 99%

Axial Optical Traps: A New Direction for Optical Tweezers

Yehoshua

Pollari

Milstein

2015

Biophysical Journal

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Optical tweezers have revolutionized our understanding of the microscopic world. Axial optical tweezers, which apply force to a surface-tethered molecule by directly moving either the trap or the stage along the laser beam axis, offer several potential benefits when studying a range of novel biophysical phenomena. This geometry, although it is conceptually straightforward, suffers from aberrations that result in variation of the trap stiffness when the distance between the microscope coverslip and the trap focus is being changed. Many standard techniques, such as back-focal-plane interferometry, are difficult to employ in this geometry due to back-scattered light between the bead and the coverslip, whereas the noise inherent in a surface-tethered assay can severely limit the resolution of an experiment. Because of these complications, precision force spectroscopy measurements have adapted alternative geometries such as the highly successful dumbbell traps. In recent years, however, most of the difficulties inherent in constructing a precision axial optical tweezers have been solved. This review article aims to inform the reader about recent progress in axial optical trapping, as well as the potential for these devices to perform innovative biophysical measurements.

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Theoretical comparison of optical traps created by standing wave and single beam

Cited by 67 publications

References 33 publications

Optical trapping in counter-propagating Bessel beams

Optical trapping in counter-propagating Bessel beams

Surface delivery of a single nanoparticle under moving evanescent standing-wave illumination

Axial Optical Traps: A New Direction for Optical Tweezers

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