Results 1 to 10 of about 50 (42)
Optical Frequency Tweezers [PDF]
Physical Review Applied, 2022 We show a concept of optical frequency tweezers for tweezing light in the optical frequency domain with a high resolution, which is the frequency version of the optical tweezers for spatial manipulation of microscopic objects. We report the proof-of-principle experiment via frequency conversion inside a cavity only for the converted light.
Rikizo Ikuta +4 more
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Interferometric Optical Tweezers [PDF]
Optics and Photonics News, 1996 Abstract We report the first experimental demonstration of an optical trap that uses interference fringes for the trapping and micro-manipulation of microscopic objects. The finges can be generated either by two-beam interference or by projecting a reduced image of a Ronchi ruling on the sample plane.
Chiou, Arthur E +4 more
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Roadmap for optical tweezers [PDF]
Journal of Physics: Photonics, 2023 Abstract Optical tweezers are tools made of light that enable contactless pushing, trapping, and manipulation of objects, ranging from atoms to space light sails. Since the pioneering work by Arthur Ashkin in the 1970s, optical tweezers have evolved into sophisticated instruments and have been employed in a broad range of applications in
Giovanni Volpe +82 more
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Optical Tweezers Exploring Neuroscience [PDF]
Frontiers in Bioengineering and Biotechnology, 2020 Over the past decade, optical tweezers (OT) have been increasingly used in neuroscience for studies of molecules and neuronal dynamics, as well as for the study of model organisms as a whole. Compared to other areas of biology, it has taken much longer for OT to become an established tool in neuroscience.
Isaac C. D. Lenton +4 more
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Theory of optical tweezers [PDF]
Europhysics Letters (EPL), 2000 4 pages, 3 ...
Neto, P. A. Maia, Nussenzveig, H. M.
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Acousto-holographic optical tweezers
Optics Letters, 2020 Acousto-optic deflectors (AODs) allow the creation of multiple optical traps by time-sharing, that is, by rapidly cycling the laser focus between designated spatial locations. The traps thus formed are not permanent. In this Letter, we successfully demonstrate the creation of multiple and permanent traps by means of AODs driven by specially encoded ...
R. Bola +4 more
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Characterizing conical refraction optical tweezers [PDF]
Optics Letters, 2014 Conical refraction occurs when a beam of light travels through an appropriately cut biaxial crystal. By focussing the conically refracted beam through a high numerical aperture microscope objective, conical refraction optical tweezers can be created, allowing for particle manipulation in both Raman spots and in the Lloyd/Poggendorff rings. We present a
McDonald, Craig +3 more
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Scanning holographic optical tweezers
Optics Letters, 2017 The aim of this Letter is to introduce a new optical tweezers approach, called scanning holographic optical tweezers (SHOT), which drastically increases the working area (WA) of the holographic-optical tweezers (HOT) approach, while maintaining tightly focused laser traps. A 12-fold increase in the WA is demonstrated.
L A, Shaw +3 more
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Optics Express, 2015 We demonstrate an optical tweezers using a laser beam on which is imprinted a focusing phase profile generated by a Devil's staircase fractal structure (Cantor set). We show that a beam shaped in this way is capable of stably trapping a variety of micron- and submicron-sized particles and calibrate the optical trap as a function of the control ...
Jixiong, Pu, P H, Jones
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Rotating optical tweezers [PDF]
SPIE Proceedings, 2005 Several methods to rotate and align microscopic particles controllably have been developed. Control of the orientation of a trapped particle allows full three dimensional manipulation, whereas rotating particles are tools for the development of optically-driven micromachines. It has been shown that the orientation of an object in the laser trap depends
Wolfgang Singer +4 more
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