Tufts University

University of Michigan

Robert David White

Karl Grosh

Zhengxin Zhao

Paul Lehrman

Chris Penny

Cody Chen

Noel Hwang

The present disclosure relates to shear sensor arrays. In particular, the present disclosure relates to a floating element shear stress sensor array on a chip that is calibrated to high shear levels and is calibrated to determine the sensitivity to streamwise pressure gradients.

Shear sensor array

An apparatus for making music includes a cymbal, an acoustic transducer, a signal-processing system that receives a first signal from the acoustic transducer and that generates a second signal based on a property of the first signal, and a classifier that determines a particular manner in which the cymbal was struck based on the second signal, and provides an output trigger signal for triggering production of a sound that consistent with the particular manner.

Synthesizer with cymbal actuator

Silicon and glass micromachined (MEMS) acoustic sensors incorporating trapped-liquid architectures are disclosed. The trapped liquid serves as an acoustic transmission medium allowing the input port to the system to be physically separated from the sensing location. The trapped liquid interacts with a conductive, flexible sensing membrane. Sound pressure waves enter the trapped liquid through an input membrane, travel to the sensing membrane, and excite vibrations of the sensing membrane. The vibrations of the sensing membrane are measured using on-chip capacitive sensing. The capacitive sensing structure is formed by the conductive sensing membrane and a fixed conducting top electrode. As the gap between the conductive sensing membrane and the fixed top electrode varies, the capacitance varies, leading to an electrical signal which is the electrical output of the system.

Trapped fluid microsystems for acoustic sensing

Growing community of inventors

Medford, MA, United States of America

Robert David White