MEMS solar energy harvesting
Abstract not provided.
Publications
Ultrasensitive directional microphone arrays for military operations in urban terrain
Acoustic sensing systems are critical elements in detection of sniper events. The microphones developed in this project enable unique sensing systems that benefit significantly from the enhanced sensitivity and extremely compact foot-print. Surface and bulk micromachining technologies developed at Sandia have allowed the design, fabrication and characterization of these unique sensors. We have demonstrated sensitivity that is only available in 1/2 inch to 1 inch studio reference microphones--with our devices that have only 1 to 2mm diameter membranes in a volume less than 1cm{sup 3}.
Dynamic Pull-In and Switching For Sub-Pull-In Voltage Electrostatic Actuation
Abstract not provided.
Dynamic Pull-in and Switching for Sub-Pull-In Voltage Electrostatic Actuation
Abstract not provided.
Optical MEMS for QIP applications
Abstract not provided.
Optical interconnect loop-back switch for in-situ diagnostics
Abstract not provided.
Large-stroke MEMS deformable mirrors for adaptive optics
Proposed for publication in the IEEE Journal of Selected Topics in Quantum Electronics.
Abstract not provided.
Ultra-lightweight telescope with MEMS adaptive optic for distortion correction
Recent world events have underscored the need for a satellite based persistent global surveillance capability. To be useful, the satellite must be able to continuously monitor objects the size of a person anywhere on the globe and do so at a low cost. One way to satisfy these requirements involves a constellation of satellites in low earth orbit capable of resolving a spot on the order of 20 cm. To reduce cost of deployment, such a system must be dramatically lighter than a traditional satellite surveillance system with a high spatial resolution. The key to meeting this requirement is a lightweight optics system with a deformable primary and secondary mirrors and an adaptive optic subsystem correction of wavefront distortion. This proposal is concerned with development of MEMS micromirrors for correction of aberrations in the primary mirror and improvement of image quality, thus reducing the optical requirements on the deployable mirrors. To meet this challenge, MEMS micromirrors must meet stringent criteria on their performance in terms of flatness, roughness and resolution of position. Using Sandia's SUMMIT foundry which provides the world's most sophisticated surface MEMS technology as well as novel designs optimized by finite element analysis will meet severe requirements on mirror travel range and accuracy.
Results 76–83 of 83