News & Events

BSAC Seminar: Piezoelectric Micromachined Ultrasonic Transducers

April 23, 2008
Dr. Hongsoo Choi Department of Mechanical & Aeronautical Engineering, UC Davis April 23, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: David Horsley & John Huggins

Experimental and numerical studies of Piezoelectric Micromachined Ultrasonic Transducers (pMUTs) were done to improve their performance. pMUT uses a micromachined multilayered membrane resonator as a sound radiating element and lead zirconate titanate (PZT) film in pMUT is mainly used as a component to drive the membranes. Thus pMUTs offer a more flexible and innovative approach to the...

BSAC Seminar: Microscope Manipulation of Cells and their Environment for Cell Sorting and Stem Cell Biology

May 7, 2008
Prof. Joel Voldman Department of Electrical Engineering and Computer Sciences, MIT May 7, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: Luke Lee

Microsystems have the potential to impact biology by providing new ways to manipulate cells and the microenvironment around them. These microsystems provide the interface between the macro world and the micro world of cells. Simply physically manipulating cells or their environment--using microfluidics, electric fields, or optical forces--provides new ways to separate cells and organize cell-cell interactions. The...

BSAC Seminar: Micro-Optic Systems for UAV Sensors and Communications

April 30, 2008
Prof. Joseph Ford Jacobs School of Engineering, UC San Diego April 30, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: Hyuck Choo

Among Prof. Ford's research topics to be discussed are - 2D beam steering using orthogonal dispersive elements - Remote spectroscopy (using commercial analog MEMS mirrors) - Free-space communications (custom MEMS retro-modulator)

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Interested in nominating someone to speak at the BSAC Technology Seminar? We welcome you to submit a speaker...

BSAC Seminar: Integrated MEMS Technologies for Adaptive Optics

May 14, 2008
Blake Lin Department of Electrical Engineering and Computer Sciences, UC Berkeley BSAC Graduate Student Researcher Dissertation Presentation May 14, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: Tsu-Jae King Liu & Richard Muller

Image resolutions of modern optical systems are many times limited by wavefront aberrations due to turbulence in the optical media. Adaptive Optics (AO) is a technology that utilizes a deformable mirror (DM) to correct the wavefront distortion, thereby enhancing the image resolution. In this thesis research, we...

BSAC Seminar: Elastic Guided Waves Divergence: Past and Present

May 23, 2008
Prof. Emeritus Morio Onoe University of Tokyo May 23, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: Clark Nguyen

Lord Rayleigh studied the first elastic guided wave known as Rayleigh surface wave in 1885 and similar guided waves in a plate known as Rayleigh-Lamb waves in 1888. They were pure mathematical analyses. He noted, however, these waves may play an important role in earthquakes due to its limited divergence in two dimensions. In fact early studies on guided waves were mainly conducted in seismology. A variety of engineering applications have emerged...

BSAC Seminar: Future of SAW Devices

June 12, 2008
Prof. Ken-ya Hashimoto Chiba University Japan June 12, 2008 | 11:10 to 12:40 | 521 Cory Hall, Hogan Room Host: Jan Kuypers

1. Future of SAW Devices - This lecture discusses research trends of the RF SAW/BAW filters, focusing on their possible integration into RF ICs. First, modern SAW/BAW technologies are introduced, and it is shown how high performances are achievable by the use of current state-of-the-art technologies. Secondly, current front-end modules are surveyed, and then it is discussed how they are going to be integrated with active elements. Finally, System...

BSAC Seminar: Integration of Nanowires for Electronics: from 2D to 3D

September 30, 2008
Dr. Zhiyong Fan BSAC Graduate Student Researcher September 30, 2008 | 12:30 to 01:30 | 521 Cory Hall, Hogan Room Host: Richard Lossing

Semiconductor nanowires have been extensively explored as the potential building blocks for a variety of electronic and optoelectronic applications due to the continuous increased demand for miniaturized devices and circuits. However, controlled and uniform assembly of "bottom-up" nanowire (NW) materials with high scalability is one of the major bottleneck challenges towards the integration of nanowires for circuit applications. In...

BSAC Seminar: Controlled Microfluidic Interfaces for Microoptics and Microsensing

August 27, 2008
Prof. Hongrui Jiang Assistant Professor, Department of Electrical Engineering, University of Wisconsin-Madison August 27, 2008 | 12:00 to 01:00 | 521 Cory Hall, Hogan Room Host: Clark Nguyen

Surface tension profoundly affects fluid behavior at the microscale. Through careful engineering, controlled liquid-liquid or liquid-gas interfaces at the microscale can be formed and used in many interesting applications. In this talk, I will present our work on applying such interfaces to microoptics and microsensing. I will first introduce a few types of microlenses and...

BSAC Seminar: Optoelectronic Tweezers as a Dynamic Cellular Platform

October 7, 2008
Justin Valley BSAC Graduate Student Researcher October 7, 2008 | 12:30 to 01:30 | 521 Cory Hall, Hogan Room

The ability for the control and interrogation of single cells in a massively parallel fashion is of critical interest in applications ranging from basic science to pharmaceutical development. Optoelectronic tweezers (OET) is a promising candidate for achieving this goal. Through the use of low-intensity optical patterns, dielectrophoretic forces are dynamically created allowing for the simultaneous manipulation of individual cells and particles. In this talk, we will...

BSAC Seminar: Location Aware and Power Efficient Wireless Networks

October 14, 2008
Steven Lanzisera BSAC Graduate Student Researcher October 14, 2008 | 12:30 to 01:30 | 521 Cory Hall, Hogan Room

Wireless networks from Wi-Fi to cellular phones to sensor networks surround us and will only continue to grow in capability and utility. We are currently seeing a large push in location aware wireless devices that rely on GPS for location information, and many interesting applications are possible with this technology. Much more will become possible when low cost and low power wireless devices incorporate location aware wireless technologies, and these devices...