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Showing 1 to 20 of 25 for “"microelectromechanical system"”.

  1. Packaging for a drug delivery microelectromechanical system

    Ho Duc, Hong Linh, 1978-Massachusetts Institute of Technology2005

    … medicine in the last decade. Its advantages over systemic drug delivery are clear in cancer therapy, with localized tumors. A silicon microelectromechanical drug delivery device was fabricated for the purpose of delivering chemotherapeutic agents such-as carmustine, a potent brain cancer drug, …

    mit Repository record

  2. K-band lithium niobate microelectromechanical system hybrid filters

    Gao, LiuqingUniversity of Illinois at Urbana-Champaign2020

    … are carried out separately and combined at a system-level. The fabricated filter is built with the seventh-order antisymmetric Lamb wave mode (A7) resonators with an electromechanical coupling of 0.7%. The measurements show a 3 dB FBW of 2.4% at 19 GHz, and a compact footprint of 1.4 mm2.

    uiuc Repository record

  3. Super-high-frequency lithium niobate microelectromechanical system resonators

    Yang, YansongUniversity of Illinois at Urbana-Champaign2018

    … on the demonstration of a new class of SHF microelectromechanical system (MEMS) resonators operating in the 5 GHz range. The SHF resonances have been achieved by employing the first order antisymmetric (A1) mode in ion-sliced and suspended Z-cut lithium niobate (LiNbO3) thin films, which …

    uiuc Repository record

  4. The geometric sensitivity analysis of electrostatic field for microelectromechanical system simulation

    Wang, Jungfeng, 1971-Massachusetts Institute of Technology1997

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.

    mit Repository record

  5. Vehicle Axle Detection and Spacing Calibration Using MEMS Accelerometer

    Zhang, WeiVirginia Tech2014

    … and highway planning strategy. An advanced microelectromechanical system (MEMS) accelerometer for vehicle classification based on axle count and spacing was designed, tested, and applied to the pavement. Vehicle-pavement interaction was collected by the vibration sensor while vehicle axle …

    vt Repository record

  6. MEMS spatial light modulator for holographic displays

    Pearson, Elroy L. (Elroy Louis), 1973-Massachusetts Institute of Technology2002

    … spatial light modulator (SLM) built using microelectromechanical system (MEMS) technology. Several related MEMS SLMs are reviewed. In particular, the capabilities of Silicon Light Machines' Grating Light Valve (GLV T) and the Polychromator by Honeywell, Sandia, and MIT are examined because …

    mit Repository record

  7. Mems approaches in infrared imaging

    Papavieros, George

    The design and performance simulation of a novel Microelectromechanical System (MEMS) based infrared detector, that utilizes coefficient of thermal expansion, is discussed. The detector design uses a variety of thermal expansion coefficient materials, including alloys which are connected to ambient …

    njit Repository record

  8. Design of test bench apparatus for piezoelectric energy harvesters

    Yoon, You C. (You Chang)Massachusetts Institute of Technology2013

    … bench for the characterization of piezoelectric microelectromechanical system (MEMS) energy harvester being developed by the Micro & Nano Systems Laboratory research group at MIT. Piezoelectric MEMS energy harvesters are micro-devices that are able to harvest energy from their ambient vibrations …

    mit Repository record

  9. MEMS IMU navigation with model based dead-reckoning and one-way-travel-time acoustic range measurements for autonomous underwater vehicles

    Kepper, JamesMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2017

    … sensor suite, relying mostly on a consumer grade microelectromechanical system (MEMS) inertial measurement unit (IMU) and a vehicle’s dynamic model velocity. An implementation of an Extended Kalman Filter (EKF) that includes IMU bias estimation and coupled with a range filter, is obtained in the …

    woods-hole Repository record

  10. ALN/ALSCN Acoustic Resonant Systems Based on Ultra-Thin Piezoelectric Films

    Park, MingyoGeorgia Institute of Technology2022

    … nitride (AlN/AlScN) based acoustic resonant systems. Various microelectromechanical system (MEMS) acoustic resonators — surface acoustic wave (SAW), thin-film bulk acoustic resonator (FBAR), and Lamb wave resonators— were investigated by employing the ultra-thin piezoelectric films targeted …

    gatech Repository record

  11. MEMS IMU inertial measurement unit one-way-travel-time inertial measurement unit autonomous underwater vehicles

    Kepper, James H., IVMassachusetts Institute of Technology2017

    … sensor suite, relying mostly on a consumer grade microelectromechanical system (MEMS) inertial measurement unit (IMU) and a vehicle's dynamic model velocity. An implementation of an Extended Kalman Filter (EKF) that includes IMU bias estimation and coupled with a range filter, is obtained in the …

    mit Repository record

  12. An optic fiber sensor for partial discharge acoustic detection

    Wang, Xiaodong

    … micromachining process compatible with MEMS (Microelectromechanical system) technology. The sensor is used in a transformer to measure PD acoustic waves. The experimental results show that the sensor not only has an inherent high signal to noise capability, but is able to accurately localize …

    njit Repository record

  13. The Deformable Mirror Demonstration Mission (DeMi) On-Orbit Analysis

    Gubner, Jennifer N.Massachusetts Institute of Technology2021

    … mission to demonstrate the use of a 140 actuator microelectromechanical system (MEMS) deformable mirror (DM) and a closed-loop adaptive optics (AO) system in space. DeMi launched to the International Space Station (ISS) on the NG-13 Cygnus resupply mission on February 15, 2020 and was deployed …

    mit Repository record

  14. Micro-opto-mechanical switching and tuning for integrated optical systems

    Nielson, Gregory Nolan, 1974-Massachusetts Institute of Technology2004

    … costs and enhance the functionality of optical systems in a manner similar to what has been achieved by integrating electronic circuits. One of the basic optical elements required to enable integrated optical circuits is an integrated optical switch, analogous to transistor switches used in …

    mit Repository record

  15. Development of a porous piezoresistive material and its applications to underwater pressure sensors and tactile sensors

    Woo, Mun EeMassachusetts Institute of Technology2013

    MEMS (Microelectromechanical System) pressure sensor arrays are gaining attention in the field of underwater navigation because they are seen as alternatives to current sonar and vision-based systems that fail to navigate unmanned undersea vehicles (UUVs) in dark, unsteady and cluttered …

    mit Repository record

  16. Wall shear measurements in arterial flows

    Etebari, AliVirginia Tech2006

    … the hemodynamical characteristics within the system, which has significant effect upon shear stress (SS) and wall shear stress (WSS) levels, as well as particle residence times. The relationship between these hemodynamic parameters and vascular injury response is of great relevance to …

    vt Repository record

  17. Advancing acoustic filters for 5G front-ends: Lithium niobate piezoelectric MEMS resonators and filters

    Yang, YansongUniversity of Illinois at Urbana-Champaign2020

    … fabrication, and demonstration of a new class of microelectromechanical system (MEMS) resonators and filters operating in the 5G mid- and high-frequency bands. The 5G mid-band (Sub-6 GHz) resonances have been achieved by employing the first order asymmetric (A1) Lamb wave mode in the Z-cut and …

    uiuc Repository record

  18. Optimization and design of radio frequency piezoelectric MEMS resonators

    Gao, AnmingUniversity of Illinois at Urbana-Champaign2019

    Radio frequency (RF) microelectromechanical system (MEMS) resonators employing Lamb waves propagating in piezoelectric thin films have recently attracted much attention since they combine the advantages of the bulk acoustic wave (BAW) and surface acoustic wave (SAW) technologies: high phase …

    uiuc Repository record

  19. RF micro-systems for 5G front-end signal processing

    Lu, RuochenUniversity of Illinois at Urbana-Champaign2020

    … and tighter integration. Designing portable systems faces the new challenge of reducing component size while still operating at RF, where the path attenuation is low and fading is readily manageable. Satisfactory size reduction is particularly difficult for passive components that rely on the …

    uiuc Repository record

  20. Domain-Specific Analog Physical Computing Accelerators

    Meech, JamesUniversity of Cambridge2023

    … varies in time. The physical processes which the system samples are: 1) Microelectromechanical system (MEMS) sensor noise. 2) Electron tunneling noise. This dissertation shows that the mean and standard deviation of both the MEMS- and electron tunneling noise-based programmable random variate …

    cambridge Repository record

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