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Showing 1 to 20 of 86 for “"Lorentz force"”.
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A Lorentz-force actuated needle-free intraocular injection device
… patient anxiety and numerous complications. Lorentz-force actuated needle-free jet injection has been shown to successfully deliver fluid to various layers of skin, and, by its nature, may reduce intravitreal injection anxiety and complications. The challenges of adapting current …
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Lorentz-force actuated needle-free injection for intratympanic pharmaceutical delivery
… the inner ear. The real-time controlled linear Lorentz-force actuated jet injector developed in the MIT BioInstrumentation lab was found to be a feasible technology for possible improvement over current intratympanic drug delivery methods. Jet injection holes using a nozzle with a 50 [mu]m …
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Experimental implementation of Lorentz force actuators for hydrodynamic drag reduction
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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A Lorentz-force actuated controllable needle-free drug delivery system
… and tested, using a controllable linear Lorentz-force actuator. This actuator allows rapid control of the injection pressure during injections. Using this device, precise control over delivery parameters can be achieved. In addition, several portable power systems for this injector were …
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Closed-loop control of vortex shedding by means of Lorentz force
… increase in drag, as well an oscillating lift force on the cylinder leading to cross-stream structural vibrations. Flow control to either delay the appearance of vortex shedding or fully suppress it has attracted much attention during the last decade. The focus of this dissertation is to …
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Joulean heating and Lorentz force effects on gaseous detonation flow fields.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1966. Sc.D.
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Photonic Crystal Lorentz Force Magnetometer for Out-of-Plane Magnetic Field Sensing
… as smart phones and wearables. In this work, a Lorentz force magnetometer was designed based on the concept of a photonic crystal directional coupler (PCDC) for magnetic field sensing perpendicular (out-of-plane) to the chip surface. Built on the Silicon-On-Insulator platform, a custom …
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An optimized Linear Lorentz-force Actuator for biorobotics and needle-free injection
Voice coils are a configuration of Linear Lorentz-force Actuator (LLA) that offer efficient transduction of electrical energy into linear motion. The simple geometry of a typical voice coil motor makes the configuration easily tunable for custom applications. Recent advances in high-energy magnets …
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Modular Lorentz force actuators for efficient biomimetic propulsion of Autonomous Underwater Vehicles
… developed a highly scalable design for modular Lorentz force actuators for use in segmented flexible-hull undersea vehicles such as the RoboTuna being developed at Franklin W, Olin College of Engineering. The actuators were designed to directly drive tail foil sections, or vertebrae, in an …
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Needle-free interstitial fluid acquisition using a Lorentz-force actuated jet injector
… technique of extracting ISF samples using a Lorentz-force actuated jet injector. The jet injector is used to first inject a small volume of physiological saline to breach the skin, and the actuator is subsequently back-driven to create a vacuum in the ampoule and collect a sample that …
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Lorentz force actuator and carbon fiber co-winding design, construction and characterization
… carbon fiber and copper coil for use in linear Lorentz force actuators. A conventionally-wound, plastic-bobbin actuator coil and the new, co-wound coil were then tested to compare their electrical, thermal, and mechanical performance. In a needle-free injection application, the cowound coil …
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The modeling and characterization of a Lorentz-force actuator for needle-free injection
… a needle-free injector that is driven by a Lorentz-force actuator. The current model was able to generate pressures of up to 20 MPa in order to drive a jet of water based solution. In order to improve the needle-free injector, a new Lorentz-force actuator was designed and modeled using …
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A model of a fundamental-mode Lorentz force actuated flexural plate wave resonator
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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On an Electric-Current Carrying Discontinuity Driven Through Non-Conducting Gas by a Lorentz Force
Made available in DSpace on 2014-12-09T18:12:26Z (GMT). No. of bitstreams: 1 7000851.pdf: 3689852 bytes, checksum: 64979bda9508b649e49d38b0027bc737 (MD5) Previous issue date: 1969
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Quantitative viscoelastic spectroscopy of polymer films using Lorentz force actuated contact resonance atomic force microscopy
Embargo set by: Seth Robbins for item 50524 Lift date: 2016-09-16T17:13:01Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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Evaluating delivery of a monoclonal antibody using a linear Lorentz-force actuated needle-free injector
The medical application of injection of monoclonal antibodies using a controllable auto-loading needle-free jet injector has been evaluated for two potentially limiting factors: viscosity of the formulation and shearing of the antibody during ejection. We used the Hepatitis B monoclonal antibody …
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Design and fabrication of a two degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators
… fabrication of a 2-DOF robotic leg using linear Lorentz-force actuators arranged in a parallel configuration. The decision to use linear actuators, a parallel architecture, and Lorentz-force motors was made because of distinct differences between these designs and the alternatives, notably, their …
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Design of a Testing Fixture for the Characterization and Modeling of a Powered Prosthetic Ankle Using a Lorentz Force Actuator
Developments in prosthetic ankles have been improving amputee gaits, gradually approaching a more normal, non-amputee gait as designs develop. Currently, powered ankle prosthetics, or bionic ankles, hold the potential to mold the amputee gait much closer to its biological counterpart. This requires …
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Gravitational influences on magnetic field structure in accretion disks
… consist of ionized plasma. Due to the immense forces present in the disk, interesting and complex magnetic field structures can be set up within the disk. The influence of gravity on these structures is explored via a higher-order expansion of the gravitational potential. We consider several …
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A comprehensive study of evolution of photospheric magnetic field and flows associated with solar eruptions
… work has shown that such a change would imply Lorentz force perturbations acting on both the outer solar atmosphere and the solar surface. This research uses vector magnetograms obtained with the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory to study a number of …
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