Journal ArticleDOI
Complex micromachines produced and driven by light
Peter Galajda,Pál Ormos +1 more
TLDR
In this article, a method is introduced to build microscopic light driven rotors that are created and manipulated in laser tweezers, which can be used to build complex mechanical machines of micrometer size.Abstract:
A method is introduced to build microscopic light driven rotors that are created and manipulated in laser tweezers. Laser light-induced two-photon polymerization of light curing resins is applied to generate effective rotating particles several microns in size. The dynamics of rotation are evaluated. Mechanical devices consisting of multiple moving parts driven by these rotors are produced. It is shown that the combination of the techniques of microfabrication by two-photon polymerization by light and the light-induced trapping and rotation offers a powerful tool with which to build complex mechanical machines of micrometer size.read more
Citations
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Journal ArticleDOI
A revolution in optical manipulation
TL;DR: This research presents the next generation of single-beam optical traps, which promise to take optical tweezers out of the laboratory and into the mainstream of manufacturing and diagnostics and even become consumer products.
Journal ArticleDOI
Entanglement of the orbital angular momentum states of photons
TL;DR: This work demonstrates entanglement involving the spatial modes of the electromagnetic field carrying orbital angular momentum, which provides a practical route to entangled states that involves many orthogonal quantum states, rather than just two Multi-dimensional entangled states could be of considerable importance in the field of quantum information, enabling, for example, more efficient use of communication channels in quantum cryptography.
Journal Article
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.
Journal ArticleDOI
Tweezers with a twist
Miles J. Padgett,Richard Bowman +1 more
TL;DR: The fact that light carries both linear and angular momentum is well-known to physicists as discussed by the authors, and one application of the linear momentum of light is for optical tweezers, in which the refraction of a laser beam through a particle provides a reaction force that draws the particle towards the centre of the beam.
Journal ArticleDOI
A review on 3D micro-additive manufacturing technologies
TL;DR: In this paper, 3D micro-AM processes have been classified into three main groups, including scalable micro-am systems, 3D direct writing, and hybrid processes, and the key processes are reviewed comprehensively.
References
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Journal ArticleDOI
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpston,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,J. E. Ehrlich,L. Erskine,Ahmed A. Heikal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,Jinqui Qin,H. Rockel,Mariacristina Rumi,Xiang Li Wu,Seth R. Marder,Seth R. Marder,Joseph W. Perry,Joseph W. Perry +18 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive readout, and the fabrication of threedimensional micro-optical and micromechanical structures, including photonic bandgap-type structures.
Journal Article
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.
Journal ArticleDOI
Three-dimensional microfabrication with two-photon-absorbed photopolymerization.
TL;DR: The usefulness of the proposed method for three-dimensional microfabrication with photopolymerization stimulated by two-photon absorption with a pulsed infrared laser has been verified by fabrication of several kinds of microstructure by use of a resin consisting of photoinitiators, urethane acrylate monomers, and urethanacrylate oligomers.
Journal ArticleDOI
Forces of a single-beam gradient laser trap on a dielectric sphere in the ray optics regime.
TL;DR: It is shown that good trapping requires high convergence beams from a high numerical aperture objective and a comparison is given of traps made using bright field or differential interference contrast optics and phase contrast optics.
Journal ArticleDOI
Direct Observation of Transfer of Angular Momentum to Absorptive Particles from a Laser Beam with a Phase Singularity
TL;DR: Black or reflective particles can be trapped in the dark central minimum of a doughnut laser beam produced using a high efficiency computer generated hologram to carry angular momentum transferred from the central phase singularity beam.