David A. Horsley (Advisor)

Research Advised by Professor David A. Horsley

BPN467: Aluminum Nitride Ultrasonic Doppler Velocity Sensor

Stefon E. Shelton
Hongsoo Choi
2009

The goal of this project is to develop a high precision MEMS ultrasonic Doppler velocity sensor utilizing an array of Aluminum Nitride transducer elements for use in personal navigation units. Aluminum Nitride has been chosen for its desirable piezoelectric properties and compatibility with CMOS processes which allows for on chip integration of MEMS and electronics. In our device we aim to produce an ultrasound source-receiver pair with integrated signal processing circuitry on a single chip. To determine the velocity we will be developing and implementing an efficient and accurate...

Stefon E. Shelton

Alumni
Mechanical Engineering
Professor David A. Horsley (Advisor)
Ph.D. 2014

BSAC's Best: Fall 2013 Winners Announced

September 19, 2013

BSAC would like to thank the 200 researchers who presented their work in poster or plenary sessions at the Fall 2013 BSAC Research Review on September 18-19.

70 attending industrial members from 34 member organizations voted for the best presentations and posters, resulting in Best Paper and Best Poster awards (certificate and cash).

Richard Przybyla
Best Paper...

NT25: VLSI MEMS Switch

Qingquan Liu
2006

Two important advantages of MEMS switches are their ability to survive heat and radiation. In addition, there has been increasing demand for passing transistor replacement in specific reconfigurable computing and signal routing application; passing transistors used in VLSI exhibit on-state resistances of thousands of ohms or more, which causes signal delay and increased power consumption. In this project, the design, fabrication and characterization of MEMS contact switches customized for VLSI are presented, herein referred to as “VLSI MEMS switches”.

Project end...

NT18: MEMS RF Switch with Liquid Gallium Contacts

Qingquan Liu
2006

A self-healing MEMS RF switch, which utilizes liquid gallium contacts to take the place of the traditional metal-to-metal hard contacts, is proposed in this project. Electrostatic actuation is used to drive a silicon nitride diaphragm with upper electrodes. When the diaphragm is pulled down by the electrostatic force, small droplets of liquid gallium work as an interface between the upper and lower electrodes. The loss of the gallium droplets can be avoided due to the unwettability of the material surrounding the contact areas. In this project, hermit package and 1A DC current...

BSAC Researchers Advised by Professor David A. Horsley

BSAC's Best: Spring 2015 Winners Announced

March 13, 2015

BSAC would like to thank the 160 researchers who presented their work in poster or plenary sessions at the Spring 2015 BSAC Research Review on March 11-13.

90 attending industrial members from 35 member organizations voted for the best presentations and posters, resulting in Best Paper and Best Poster awards (certificate and cash).

Yumeng Liu
Best Paper Yumeng Liu | ...

BSAC's Best: Spring 2010 Winners Announced

March 12, 2010

BSAC would like to thank the 150 researchers who presented their work in poster or plenary sessions at the Spring 2010 BSAC Research Review on March 10-12.

65 attending industrial members from 37 member organizations voted for the best presentations and posters, resulting in Best Paper and Best Poster awards (certificate and cash).

Yingqi Jiang
Best Paper...

BSAC's Best: Fall 2012 Winners Announced

September 28, 2012
Lingqi Wu
Best Paper Lingqi Wu | Advisor: Prof. Clark T.-C. Nguyen Hollow Stems for Higher Micromechanical Disk Resonator Quality Factor [BPN540]

Jim Cheng...

BSAC's Best: Spring 2014 Winners Announced

March 6, 2014

BSAC would like to thank the 170 researchers who presented their work in poster or plenary sessions at the Spring 2014 BSAC Research Review on March 5-6.

50 attending industrial members from 36 member organizations voted for the best presentations and posters, resulting in Best Paper and Best Poster awards (certificate and cash).

Yipeng Lu
Best Paper Yipeng Lu...