Optically driven Archimedes micro-screws for micropump applications: multiple blade design

Baldeck, Patrice L.; Lin, Chih Lang; Lin, Yun-Hsuan; Lin, Chin Te; Chung, Tien Tung; Bouriau, Michel; Vitrant, G.

doi:10.1117/12.893679

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…In this study, we fabricated Archimedes screw-based micromachines using two-photon polymerization (TPP). As in the previous works [20,21], the Archimedes screw is optically trapped and rotates spontaneously. This function provides the power source for the integrated complex micro-tools.…”

Section: Introductionmentioning

confidence: 51%

Optically Driven Mobile Integrated Micro-Tools for a Lab-on-a-Chip

et al. 2013

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This study proposes an optically driven complex micromachine with an Archimedes microscrew as the mechanical power, a sphere as a coupler, and three knives as the mechanical tools. The micromachine is fabricated by two-photon polymerization and is portably driven by optical tweezers. Because the microscrew can be optically trapped and rotates spontaneously, it provides driving power for the complex micro-tools. In other words, when a laser beam focuses on the micromachine, the microscrew is trapped toward the focus point and simultaneously rotates. A demonstration showed that the integrated micromachines are grasped by the optical tweezers and rotated by the Archimedes screw. The rotation efficiencies of the microrotors with and without knives are 1.9 rpm/mW and 13.5 rpm/mW, respectively. The micromachine can also be portably dragged along planed routes. Such Archimedes screw-based optically driven complex mechanical micro-tools enable rotation similar to moving machines or mixers, which could contribute to applications for a biological microfluidic chip or a lab-on-a-chip

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Section: Introductionmentioning

confidence: 51%

Optically Driven Mobile Integrated Micro-Tools for a Lab-on-a-Chip

et al. 2013

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“…A series of photo-driven micromachines have been proposed in recent years using this technique [5][6][7][8][9]. Objects with anisotropic shapes can rotate around the laser axis due to unsymmetrical forces generated at their surface [10]. Such photo-driven rotation can be induced either from the net optical torque resulting from the complex shape [11,12] or by driving a movable part with an optical tweezers trap [13].…”

Section: Introductionmentioning

confidence: 99%

“…It efficiently transports fluid in a hollow, unclogged channel. Previously, we demonstrated that photo-driven Archimedes screws [10,19] can be rotated by optical tweezers and that the screw rotates spontaneously around its long axis when trapped at the laser focal point. This laser-induced rotation is due to the optical torque that is transferred by the laser scattering on the screw.…”

Section: Introductionmentioning

confidence: 99%

Rotational Efficiency of Photo-Driven Archimedes Screws for Micropumps

Lin

Baldeck

2015

Micromachines

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Abstract:In this study, we characterized the rotational efficiency of the photo-driven Archimedes screw. The micron-sized Archimedes screws were fabricated using the two-photon polymerization technique. Free-floating screws trapped by optical tweezers align in the laser irradiation direction and rotate spontaneously. The influences of the screw pitch and the number of screw blades have been investigated in our previous studies. In this paper, the blade thickness and the central rod of the screw were further investigated. The experimental results indicate that the blade thickness contributes to rotational stability, but not to rotational speed, and that the central rod stabilizes the rotating screw but is not conducive to rotational speed. Finally, the effect of the numerical aperture (NA) of the optical tweezers was investigated through a demonstration. The NA is inversely proportional to the rotational speed.

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Large‐Area 3D‐Printed Chiral Metasurface Composed of Metal Helices

Golod

Seyfi

Buldygin

et al. 2018

Advanced Optical Materials

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of semiconductor technology, such as consecutive lithographic steps with layers alignment, and the deposition and chemical etching of materials, are used. Besides, for preventing the capillary sticking of 3D microstructures and nanostructures, special treatments of surfaces and the supercritical drying technique are used after liquid-etching and resistdevelopment steps. [15,16] In ref.[17], a method was proposed for fabrication of microhelices and nanohelices from elastically strained thin semiconductor strips detached, with the help of selective etching of a sacrificial layer, from the substrate and then rolled in classically shaped 3D helices. The latter approach, combined with supercritical drying, [16] was successively employed for forming, on a GaAs substrate, a chiral metamaterial in the form of a single-layer array of 14.5 µm diameter 3D microhelices fabricated from a strained hybrid semiconductor-metal (In 0.2 Ga 0.8 As/GaAs/Ti/Au) films. [18,19] It was shown that the maximum polarization-plane rotation angle for terahertz radiation having passed the heliceson-substrate system reached 17° at 2.1 THz frequency. A close value for the polarization-plane rotation angle of terahertz radiation, 14°, was also obtained using a structure that involved 3D metal gammadion-shaped elements located directly on the surface of pyramidal trenches etched in a silicon substrate. [20] Experimental data obtained for both chiral metamaterials proved a high effectiveness of the interaction of electromagnetic radiation with the 3D conducting microresonators, thus encouraging the workers to spent further efforts on the search for simpler and cheaper technological solutions.Today, rapid progress in the development of additive technologies [21,22] opens up wide opportunities in the field of 3D chiral resonator elements, 3D metamaterials, and photonic crystals. [23][24][25] A number of sequential 3D printing methods have enabled the point-by-point formation of free-standing conducting helices for chiral metamaterials active in a broad range of radiation wavelengths, from microwave (MW) to optical frequencies. Those methods can be classed to several groups. First, these are methods including the electrochemical and chemical deposition of metals onto the surface of printed 3D polymer structures: i) filling of helically shaped channels with a metal [9,26] and ii) covering of free-standing 3D helical microcarcasses with a metal. [27] Second, this is the growth of An original design for chiral metasurfaces formation is proposed. The hybrid fabrication approach is based on the 3D printing of polymer substrates with a shape-generating "helical" relief, molding, and subsequent shadow metal deposition. The formed double-layer grating of multiturn metal helices rotates the polarization plane of sub-terahertz and microwave radiation through an angle in excess of 40°. Both experimentally and in numerical simulations, it is demonstrated that re-reflection phenomena occur in the "metal helixpolymer substrate" hybrid structure. Those phenomena per...

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Optically driven Archimedes micro-screws for micropump applications: multiple blade design

Cited by 4 publications

References 10 publications

Optically Driven Mobile Integrated Micro-Tools for a Lab-on-a-Chip

Optically Driven Mobile Integrated Micro-Tools for a Lab-on-a-Chip

Rotational Efficiency of Photo-Driven Archimedes Screws for Micropumps

Large‐Area 3D‐Printed Chiral Metasurface Composed of Metal Helices

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