Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Micromirror"”.
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Optical tweezers using the Texas Instruments' Digital Micromirror Device(tm)
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Design and fabrication of one and two axis nickel electroplated micromirror array
… OF MISSOURI AT AUTHOR'S REQUEST.] MEMS based micromirror devices are gaining importance at a steady pace in the applications related to optical communications and display technology. This research work describes the design, simulation and fabrication of a new micromachined metallic micromirror …
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Design and Fabrication of Electrostatically Actuated Serpentine-Hinged Nickel-Phosphorous Micromirror Devices
<p>A process for micromachining of micro-mirror devices from silicon-on-insulator wafers was proposed and implemented. Test methods and force applicators for these devices were developed. Following successful fabrication of these devices, a novel process for fabrication of devices out of the plane …
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A tip-tilt-piston micromirror with elastomeric universal joint fabricated via micro-masonry
… and characterization of a hybrid tip-tilt-piston micromirror driven by electrostatic actuation. The micromirror involves a single crystal silicon mirror and a conductive elastomeric universal joint which are mechanically bonded and electrically interconnected. This device takes advantage of two …
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The Strain Gradient Effect on Material Behavior at the Micron and Submicron Scales
… focus our interest on a MEMS structure---digital micromirror device (DMD) and find that the strain gradient effect significantly increases the mechanical strain energy in the DMD and reduces the rotation time of the micromirror.
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Microelectromechanical handheld laser-scanning confocal microscope: application to breast cancer imaging
… two-axis vertical comb driven silicon micromirror fabricated by a novel method compatible with complementary metal-oxide-semiconductor processing employed in the semiconductor industry. The process enables integration of rotation sensors on the chip to adaptively correct for aberrations …
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Applications of programmable MEMS micromirrors in laser systems
… offset comb-drive (AVC) actuated scanning micromirrors, and their use as intracavity active Q-switch elements in solid-state laser systems, are investigated. The AVC scanning micromirrors are created through a multi-user fabrication process, with theoretical and experimental investigations …
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Simulation tools for microelectromechanical systems
… discretization of complex structures such as the micromirror lead to thousands of internal degrees of freedom. Their mostly rigid motion is exploited leading to a mixed rigid-elastic formulation. This formulation's advantage is apparent when it is incorporated in an efficient coupled domain …
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Light source selection and optical design of a UV absorption based detector for liquid chromatography
… modular LED architecture and employing a digital micromirror device to modulate the light used in detection. The expected capabilities of a detector employing the design are derived and then compared to existing UV absorption detectors for liquid chromatography. The strategy presented in this …
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One-Dimensional MEMS Optical Phased Array Systems Based on Surface Micro-Machined Silicon Mirrors for Scanning LiDAR Applications
… OPA device utilizes an array of piston-type micromirrors which act as optical phase shifters. Each metal coated polysilicon micromirror is suspended by a pair of serpentine springs and is individually actuated at low voltage by a separate electrostatic parallel plate actuator. The field of …
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Smart optical imaging systems with automated electronics
… dissertation involves the use of the Digital Micromirror Device (DMD) deployed within several smart optical designs including an embedded laser beam profiler and a new camera idea which is inspired by the Telecommunication science field. Specifically, proposed and demonstrated is the design …
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Novel DMD-based Lidar and Display Systems
Digital Micromirror Devices (DMD) have been used in prescribed optical architectures for decades with very little deviation. These prescribed architectures most commonly include F-number-limited illumination to project a binary spatially-modulated DMD to a distant plane. Rather, this dissertation …
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Compensating sequences for robust quantum control of trapped-ion qubits
… an integrated high numerical aperture spherical micromirror for enhanced fluorescence collection.
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Smart photonics in imaging and sensing
… imager and spectrum analyser deploying a Digital Micromirror Device is described and demonstrated. The performance of the proposed laser beam imager is experimentally compared versus a commercial industrially deployed profiler, for a custom-made donut shaped 633 nm laser beam. Experimental results …
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Controlling ultracold fermions under a quantum gas microscope
… potential imprinting ability. Using a digital micromirror device (DMD), a 2D box potential was created with the sharpness of a few lattice sites. A homogenous 2D Hubbard system is created at half-filling in this box potential. Using a magnetic gradient, different spin states were separated …
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Optical cooling using the dipole force
… energies of either atoms and molecules, or micromirrors. In the literature, these two strands are kept largely separate; both, however suffer from severe limitations. Laser cooling of atoms and molecules largely relies on the internal level structure of the species being cooled. As a result, …
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Cavity quantum electrodynamics with ensembles of ytterbium-171
… cavity quantum electrodynamics. This asymmetric micromirror structure simultaneously offers strong light-atom coupling, mechanical robustness, and excellent access to a large cavity volume. We develop a simple but accurate model for strong light-atom interactions in our system, which allows us to …
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Precise optical manipulation techniques for exploring neuronal function
… uncaging sites. The incorporation of a digital micromirror device (DMD) in the setup allows high-speed independent switching of individual focal spots, enabling control over the temporal organisation of uncaging events. Together, the SLM-DMD combination offers unprecedented flexibility in the …
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Precise optical manipulation techniques for exploring neuronal function
… uncaging sites. The incorporation of a digital micromirror device (DMD) in the setup allows high-speed independent switching of individual focal spots, enabling control over the temporal organisation of uncaging events. Together, the SLM-DMD combination offers unprecedented flexibility in the …
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