Kristofer S.J. Pister (Advisor)

Research Advised by Professor Kristofer S.J. Pister

Nicola Accettura

Alumni
Professor Kristofer S.J. Pister (Advisor)
PostDoc 2015

A Cyber-infrastructure for the Measurement and Estimation of Large-scale Hydrologic Processes

Branko Kerkez
Steven D. Glaser
Alexandre M. Bayen
Kristofer S.J. Pister
2012

Water shortages, particularly evident in the state of California, emphasize the need for a better hydrologic understanding, and improved water management techniques. The majority of the state’s water originates in the Sierra Nevada as snow, melting throughout the year to meet the needs of various stakeholders. Current measurement techniques are unable to resolve variability of the snowpack at the basin scale, and snowmelt processes are not well captured by existing hydrologic models. A system-level solution is introduced to facilitate scientific understanding and water management...

Wireless Sensing Applications for Critical Industrial Environments

Fabien Chraim
Kristofer S.J. Pister
2014

The widespread deployment of the World Wide Web over the past few decades has connected people globally. The next logical step in this evolution was to connect people to their environment. As public interest in the aging infrastructure grew, so did the desire to make this infrastructure safer and more environmentally friendly. This required the development of low-power wireless sensor networks to monitor and control this infrastructure, the so-called Internet of Things. With the introduction of low-power communication standards rooted in the Time Slotted Channel Hopping (TSCH)...

Microrelay Design, Performance, and Systems

Ezekiel Kruglick
Kristofer S.J. Pister
Roger T. Howe
Richard M. White
Dorian Liepmann
1999

Surface micromachined four terminal relays have been fabricated, tested, and packaged. The relays are implemented in a foundry process with minimal post-processing. They show on resistances as low as 20mW, current carrying capacities as highas 0.48 Amps, and lifetimes in the millions of cycles while hot switching 80mA. These devices are thus competitive with commercial macroscopic relays.

Achieving these high performance and reliability levels required exploring the physics and tribology of microrelays and using novel physical experiments to outline a...

Ezekiel Kruglick

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 1999

Richard Yeh

Alumni
Electrical Engineering and Computer Sciences
Professor Kristofer S.J. Pister (Advisor)
Ph.D. 2001

Microfabricated Parylene Microneedles and Pneumatic/Hydraulic Actuators for Use in Interventional, Transvascular Drug Delivery

Kirk Seward
Albert P. Pisano
Kristofer S.J. Pister
Liwei Lin
2001
A method for performing interventional surgery has been developed. Transvascular delivery of therapeutic and diagnostic agents into perivascular space is desirable for various cardiovascular treatments and applications. The dosing of perivascular space requires the perpendicular actuation of a microneedle to slide through the layers...

Mechanical Analysis and Design of Vibratory Micromachined Gyroscopes

Wyatt Davis
Albert P. Pisano
Oliver M. O'Reilly
Kristofer S.J. Pister
2001
Vibratory micromachined gyroscopes typically exhibit certain undesirable behaviors that impede the angular rate measurement, such as nonlinearity, cross-axis sensitivity, scale factor offset, and quadrature error. These errors have sources in both the mechanical and electrical ...

Design and Modeling of a Dual Mass SOI-MEMS Gyroscope

Ashwin Seshia
Roger T. Howe
Kristofer S.J. Pister
1999

This report discusses the design of a dual mass silicon-on-insulator(SOI) MEMS gyroscope. The main advantage of the dual mass gyroscope is the ability to cancel out common mode acceleration. The SOI MEMS process also provides several inherent advantages including increased out-of-plane stiffness, increased mass, and increased...

Integrated Micromechanical Resonant Sensors for Inertial Measurement Systems

Ashwin Seshia
Roger T. Howe
Bernhard E. Boser
Kristofer S.J. Pister
Roberto Horowitz
2002
Thumbnail-sized inertial measurement systems based on Micro Electro Mechanical Systems (MEMS) technology have been perceived as a breakthrough in the field of inertial navigation. However, even as micromechanical accelerometers have seen widespread commercialization, vibratory micromechanical gyroscopes...