Keyword: Microelectromechanical devices

Briefs: Electronics & Computers

Research on microelectromechanical system (MEMS) resonators dates back to the mid-1960s, but MEMS timing references are only now being introduced commercially. In this time, two...

Application Briefs: Imaging

Micromachined deformable mirror (DM)
Boston Micromachines Corp.
Watertown, MA
617-926-4178
www.bostonmicromachines.com
Briefs: Sensors/Data Acquisition

Unmanned Aerial Vehicles (UAVs) — autonomous or remotely controlled pilotless aircraft — have been recently thrust into the spotlight for military applications, for homeland security,...

Briefs: Medical
Neuro-Prosthetic Implants With Adjustable Electrode Arrays

Brushlike arrays of electrodes packaged with application-specific integrated circuits (ASICs) are undergoing development for use as electronic implants — especially as neuro-prosthetic devices that might be implanted in brains to detect weak electrical signals generated by neurons....

Who's Who: Mechanical & Fluid Systems

Dr. Walter Merrill is involved in a variety of programs aimed at forming partnerships with private and public entities. For the past five...

Briefs: Physical Sciences

In one of the first real-world applications of photonic crystals, two companies partnered to produce a photonic crystal enhanced (PCE) micro-hotplate device with...

Briefs: Semiconductors & ICs
Improved Method of Manufacturing SiC Devices

The phrase, "common-layered architecture for semiconductor silicon carbide" ("CLASSiC") denotes a method of batch fabrication of microelectromechanical and semiconductor devices from bulk silicon carbide. CLASSiC is the latest in a series of related methods developed in recent years in continuing...

Briefs: Electronics & Computers

A class of reconfigurable microwave antennas now undergoing development comprise fairly conventional printed-circuit feed elements and radiating patches integrated with novel...

Briefs: Physical Sciences

Efforts are under way to develop a nanofluidic size-exclusion chromatograph (SEC), which would be a compact, robust, lightweight instrument for separating molecules of interest according to their...

Briefs: Physical Sciences

Arrays of multiple, nominally identical sensors with sensor-output-processing electronic hardware and software are being developed in order to obtain accuracy, reliability, and lifetime...

Briefs: Physical Sciences

As an alternative to conventional tubing instrumentation for measuring airflow, designers and technicians at Glenn Research Center have been fabricating packaging components and assembling a set of unique...

Briefs: Mechanical & Fluid Systems
Making Precise Resonators for Mesoscale Vibratory Gyroscopes

An alternative approach to the design and fabrication of vibratory gyroscopes is founded on the use of fabrication techniques that yield best results in the mesoscopic size range, which is characterized by overall device dimensions of the order of a centimeter. This approach stands in...

Articles: Photonics/Optics

Controlled Ultraviolet (UV) laser ablation is a viable method of micro-machining micro-electro-mechanical systems (MEMS) and micro-optical-electro-mechanical systems (MOEMS). It enables users to...

Briefs: Electronics & Computers
Micro Sun Sensor for Spacecraft

A report describes the development of a compact micro Sun sensor for use as a part of the attitude determination subsystem aboard future miniature spacecraft and planetary robotic vehicles.

Briefs: Mechanical & Fluid Systems

Modifications have been proposed to effect further improvement of the device described in “Improved Piezo- electrically Actuated Microvalve” (NPO-30158), NASA Tech Briefs, Vol....

Briefs: Motion Control
Continuous Tuning and Calibration of Vibratory Gyroscopes

A method of control and operation of an inertial reference unit (IRU) based on vibratory gyroscopes provides for continuously repeated cycles of tuning and calibration. The method is intended especially for application to an IRU containing vibratory gyroscopes that are integral parts of...

Briefs: Motion Control

A proposed inchworm actuator, to be designed and fabricated according to the principles of microelectromechanical systems (MEMS), would effect linear motion characterized by steps as...

Briefs: Motion Control

A proposed method of processing the outputs of multiple gyroscopes to increase the accuracy of rate (that is, angular- velocity) readings has been developed theoretically and...

Briefs: Photonics/Optics

Brushlike arrays of carbon nanotubes embedded in microstrip waveguides provide highly efficient (high-Q) mechanical resonators that will enable ultra-miniature radio-frequency (RF)...

Briefs: Manufacturing & Prototyping

A process for transferring an entire wafer-level micromachined silicon structure for mating with and bonding to another such structure has been devised. This process is intended...

Briefs: Manufacturing & Prototyping

Nielsen Engineering & Research (NEAR) recently developed an ultrathin data acquisition system for use in turbomachinery testing at NASA Glenn Research Center. This system integrates a microelectro-...

Briefs: Physical Sciences

Efforts are under way to develop deformable mirrors equipped with microscopic electrostatic actuators that would be used to maintain their reflective surfaces in precise shapes...

Briefs: Photonics/Optics

The figure is a simplified cross section of a microscopic optical switch that was partially developed at the time of reporting the information for this article. In a fully developed...

Briefs: Software
Mechanical Event Simulation for MEMS Design

This report examines the simulation of the dynamic behavior of a MEMS (Micro Electro Mechanical Systems) optical switch in order to meet the Telcordia telecommunication industry standards for shock. The setup of the finite element model of the telecommunications device is discussed in detail, along...

Briefs: Manufacturing & Prototyping

A partly lithographic method of fabrication is being developed to enable the economical mass production of mesoscale electrically conductive coils for miniature electro- magnets,...

Briefs: Electronics & Computers
MEMS Design Optimization With FEA

This report examines design considerations in one of the most promising new areas of engineering – Micro Electro Mechanical Systems (MEMS). Designing and optimizing MEMS devices involves unique challenges, including analyzing the inter- dependent physical phenomena to which MEMS devices are sensitive and...

Briefs: Mechanical & Fluid Systems

Efforts are underway to implement an improved design of the device described in "Normally Closed, Piezoelectrically Actuated Microvalve" (NPO-20782), NASA Tech Briefs, Vol. 25, No. 1 (January...

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