Already widely used for camera image stabilization, smart phone user interfaces, and in automotive crash avoidance and detection, GPS assisted and indoor navigation is the next "killer app" for this versatile device. Unfortunately the high drift of present gyroscopes severely limits their usefulness for this important task.
This research applies precision electronic circuit techniques such as chopper stabilization and direct rate-to-digital conversion to MEMS gyroscopes with the goal of achieving sub degree/hour accuracy.
Ref: M. H. Kline et al, MEMS Gyroscope Bias Drift Cancellation using Continuous-Time Mode Reversal, Transducers 2013.
This project uses custom piezo-electric transducer arrays for ultrasonic imaging. The ultra-thin membrane design results in good coupling in air, enabling a wide range of applications including 3D localization, touch screens, gesture recognition, ranging with millimeter accuracy, air speed measurements and gas flow sensors. Compared to optical methods, ultrasound based solution have orders-of-magnitude lower power dissipation, making this technology ideal for application in battery powered devices such as smart phones.
Flow cytometers are very powerful medical diagnostic instruments. Unfortunately they are also very expensive and can be used only by trained staff. This project solves both problems with an entire flow cytometer that fits on an electronic chip. This not only reduces the cost and size, but also allows the device to be used by anyone, anywhere.
Accepted for publication at ISSCC 2014