Results 61 to 70 of about 4,295 (184)
Increasing trap stiffness with position clamping in holographic optical tweezers [PDF]
, 2009 We present a holographic optical tweezers system capable of position clamping multiple particles. Moving an optical trap in response to the trapped object's motion is a powerful technique for optical control and force measurement.
Bowman, R. +5 more
core +1 more source
Computer generated holography with intensity-graded patterns
Frontiers in Cellular Neuroscience, 2016 Computer Generated Holography achieves patterned illumination at the sample plane through phase modulation of the laser beam at the objective back aperture. This is obtained by using liquid crystal-based spatial light modulators (LC-SLMs), which modulate
Rossella Conti +4 more
doaj +1 more source
Manipulation and assembly of nanowires with holographic optical traps
, 2005 We demonstrate that semiconductor nanowires measuring just a few nanometers in diameter can be translated, rotated, cut, fused and organized into nontrivial structures using holographic optical traps.
Agarwal, Ritesh +5 more
core +1 more source
Orbital angular momentum 25 years on [invited] [PDF]
, 2017 Twenty-five years ago Allen, Beijersbergen, Spreeuw, and Woerdman published their seminal paper establishing that light beams with helical phase-fronts carried an orbital angular momentum. Previously orbital angular momentum had been associated only with
Padgett, Miles J.
core +1 more source
Thermally induced micro-motion by inflection in optical potential
Scientific Reports, 2017 Recent technological progress in a precise control of optically trapped objects allows much broader ventures to unexplored territory of thermal motion in non-linear potentials.
Martin Šiler +5 more
doaj +1 more source
Polygonal micro-whirlpools induced in ferrofluids
, 2015 We report on the observation of the polygonal whirlpools in the thin layer of ferrofluid under illumination with a laser beam carrying optical vortex and in the presence of a vertical magnetic field. This kind of structures have attracted attention after
Bacia, Marcin +4 more
core +1 more source
Assembly and force measurement with SPM-like probes in holographic optical tweezers [PDF]
, 2009 We report a high fidelity tomographic reconstruction of the quantum state of photon pairs generated by parametric down-conversion with orbital angular momentum (OAM) entanglement.
D M Carberry +11 more
core +1 more source
Multi-beam bilateral teleoperation of holographic optical tweezers
Optics Express, 2012 A multi-beam bilateral teleoperation system of holographic optical tweezers accelerated by a graphics processing unit is proposed and evaluated. This double-arm teleoperation system is composed of two haptic devices and two laser-trapped micro-beads. Each micro-bead is trapped and moved following the trajectory of each haptic device, and the forces to ...
Kazuhisa, Onda, Fumihito, Arai
openaire +2 more sources
Progress in Phase Calibration for Liquid Crystal Spatial Light Modulators
Applied Sciences, 2019 Phase-only Spatial Light Modulator (SLM) is one of the most widely used devices for phase modulation. It has been successfully applied in the field with requirements of precision phase modulation such as holographic display, optical tweezers, lithography,
Rujia Li, Liangcai Cao
doaj +1 more source
Optical tweezers: wideband microrheology
, 2010 Microrheology is a branch of rheology having the same principles as conventional bulk rheology, but working on micron length scales and micro-litre volumes.
Cooper, Jonathan M. +6 more
core +1 more source