The University of Texas System

Silicon Audio, Inc.

Nuventix, Inc.

Randall P Williams

Neal Allen Hall

Caesar Theodore Garcia

Donghwan Kim

Bradley Dean Avenson

David P Gawalt

Kristofer L Gleason

Samuel Neil Heffington

Robert Taylor Reichenbach

Michael D Wilcox

Solid-state stress sensors are presented herein. A sensor system may include a substrate, a first layer of sensing material disposed on a first surface of the substrate and at least two electrodes forming an electrode pair. The at least two electrodes may include a first electrode and a second electrode. The first and second electrodes may be offset from each other in a direction substantially parallel to the first surface. The sensing material may be a piezoelectric material and the sensor system may be configured to generate an output signal in response to shear stress experienced by the sensing material.

Solid-state shear stress sensors with high selectivity

Embodiments of solid-state stress sensors are presented herein. A sensor system may include a substrate, a first layer of sensing material disposed on a first surface of the substrate, and at least three electrodes forming a first and second electrode pair. The at least three electrodes may include a first electrode, a second electrode, and a third electrode. The first electrode may be disposed in a first plane and the second electrode and the third electrode may be disposed in a second plane, the first and second planes associated with a first direction parallel to the first surface. The first and second electrodes may be at least partially offset in the first direction. The first and third electrodes may be at least partially offset in the first direction. The sensor system may be configured to generate an output signal in response to a shear stress within the sensing material.

A device () is provided which comprises (a) a housing () equipped with a viewing window (); (b) a diaphragm (), visible through said viewing window; (c) an actuator () adapted to vibrate said diaphragm at an operating frequency; and (d) a strobe light ().

Synthetic jet ejector with viewing window and temporal aliasing

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Austin, TX, United States of America

Randall P Williams