Bernhard Boser (Advisor)

Readout Techniques for High-Q Micromachined Vibratory Rate Gyroscopes

Chinwuba Ezekwe
Bernhard E. Boser
Kristofer S.J. Pister
Roberto Horowitz
2007
Inexpensive MEMS gyroscopes are enabling a wide range of automotive and consumer applications. Examples include image stabilization in cameras, game consoles, and improving vehicle handling on challenging terrain. Many of these applications imposevery stringent requirements on power dissipation. For continued expansion into new applications it is imperative to reduce power consumption of present devices by anorder-of-magnitude. Gyroscopes infer angular rate from measuring the Coriolis force exerted on a...

Octavian Florescu

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
Ph.D. 2010

Fully Integrated Complementary Metal Oxide Semiconductor (CMOS) Bio-Assay Platform

Octavian Florescu
Bernhard E. Boser
Richard M. White
Ali Javey
Eva Harris
2010

We present a post-processed 6.25mm2 0.18μm Complementary Metal Oxide Semiconductor (CMOS) platform that leverages the advantages of super-paramagnetic bead labeling to integrate on-chip the label separation and detection functionalities required for high sensitivity bio-assays. The surfaces of the CMOS chip and of the magnetic beads are functionalized with bio-chemicals complementary to a target analyte. In a sandwich capture format, the presence of the target analyte will strongly bind 4.5μm magnetic bead labels to the...

Karl Skucha

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
Ph.D. 2012

MEMS Lens Scanners for Free-Space Optical Interconnects

Jeffrey Chou
Ming C. Wu
Bernhard E. Boser
Liwei Lin
2011

Optical interconnects are the next evolutionary step for computer server systems, replacing traditional copper interconnects to increase communication bandwidth and reduce overall power consumption. A variety of implementation techniques to bring optics to the rack-to-rack, board-to-board, and chip-to-chip scale are heavily pursued in the research space. In this dissertation we present a micro-electro mechanical systems (MEMS) based free-space optical link for board-to-board interconnects.

As with any free-space optical system, alignment is critical for the correction of undesired...

Richard Przybyla

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
Ph.D. 2013

Ultrasonic 3D Rangefinder on a Chip

Richard Przybyla
Bernhard E. Boser
Kristofer S.J. Pister
Liwei Lin
2013

Optical 3D imagers for gesture recognition, such as Microsoft Kinect, suffer from large size and high power consumption. Their performance depends on ambient illumination and they generally cannot operate in sunlight. These factors have prevented widespread adoption of gesture interfaces in energy- and volume-limited environments such as tablets and smartphones. Gesture recognition using sound is an attractive candidate to overcome these difficulties because of the potential for chip-scale solution size, low power consumption, and ambient light insensitivity.

Our research focuses...

Igor Izyumin

Alumni
Electrical Engineering and Computer Sciences
Professor Bernhard E. Boser (Advisor)
Ph.D. 2014

Readout Circuits for Frequency-Modulated Gyroscopes

Igor Izyumin
Bernhard E. Boser
Elad Alon
Dorian Liepmann
2014

In recent years, MEMS gyroscopes have become nearly omnipresent. From their origins in automotive stability control systems, these sensors have migrated to a diverse range of applications, including image stabilization in cameras and motion tracking in videogames and fitness monitors. A key application for MEMS gyroscopes is pedestrian navigation, which can help provide always-on location in portable devices while minimizing power consumption and infrastructure requirements. While modern smartphones have ...

FMCW Lidar: Scaling to the Chip-Level and Improving Phase-Noise-Limited Performance

Phillip Sandborn
Ming C. Wu
Bernhard Boser
Kristofer S.J. Pister
Liwei Lin
2017

Lidar (light detection and ranging) technology has the potential to revolutionize the way automated systems interact with their environments and their users. Most lidar systems in the industry today rely on pulsed (or, "time-of-flight") lidar, which has reached limits in terms of depth resolution. Coherent lidar schemes, such as frequency-modulated continuous-wave (FMCW) lidar, offer significant advantage in achieving high depth resolution, but are often too complex, too expensive, and/or too bulky to be implemented in the consumer industry. FMCW, and its close cousin, swept-source optical...