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Electron Devices Vancouver Chapter For
more information contact the EDS Chapter Chair, Bonnie Gray, at
News IEEE
Electron Devices Society Graduate Student Fellowship for 2006
Upcoming
Events
Pneumatic
and Hydraulic Microactuators: A new approach for achieving high force and
power densities at microscale
Dr. Michael De Volder Katholieke Universiteit Leuven, Belgium
Date
and Time:
Friday 08 February 2008, 2:00pm
Location:
9896
Applied Science Building (ASB) Simon Fraser University
Abstract
Recent research reveals that hydraulic and pneumatic microactuators can
develop higher force and power densities at the microscale compared to other
methods. Despite these promising characteristics, hydraulic actuators are
rare in microsystem technology due to the lack of low friction microseals
and difficult fabrication. This research provides a first in-depth
investigation of seal technologies for piston-cylinder hydraulic
microactuators. A number of classic seal technologies such as lipseals and
hermetic seals have been applied for the first time on microsystems.
Innovative seals for microactuators based on surface tension and ferrofluids
have been developed. The latter seals are leak-tight, low friction and allow
to seal pressures of more than 8 bar. These developments result in
piston-cylinder actuators with an outside diameter of 1.3 mm and a length of
13 mm, that are able achieve actuation forces of 1 N, strokes of 10 mm, and
speeds of 1 m/s. During this research, an inductive position sensor was
developed that can be integrated efficiently in piston-cylinder
microactuators. Using PI and sliding mode control systems, this sensor
allows to position with an accuracy up to 30 μm. This is a significant
improvement in comparison to similar systems described in literature.
Therefore, the developed actuator-sensor combination can be considered as
one of the most powerful existing miniature mechatronic drives.
Biography
Michael De Volder
received his undergraduate and Ph.D. degrees from the Katholieke
Universiteit Leuven in Belgium in 2002 and 2007, respectively, the latter in
the Division of Production Engineering, Machine Design and Automation (PMA)
with Dr. Jan Piers. In 2003 he obtained a scholarship from the Institute for
the Promotion of Innovation through Science and Technology, Flanders (IWT)
to support his doctoral research. In 2004 he obtained a scholarship for
research abroad from the Fund for Scientific Research, Flanders (FWO). In
2005 he was a visiting researcher at the Precision & Intelligence Laboratory
of the Tokyo Institute of Technology (Japan). He is currently a postdoctoral
researcher at the Katholieke Universiteit Leuven, with research interests in
the design of micro-actuators, hydraulic microdevices, and microsystem
technology.
Past
Events
Programmable Micro-scale Self-assembly
Karl Böhringer University of Washington
Date
and Time:
Thursday 10 January 2008, 3:00pm
Location:
9896 Applied Science Building (ASB) Simon Fraser University
Abstract
Massively parallel self-assembling systems present a promising alternative
to conventional manufacturing. Recently, various successful instances of
self-assembly have been demonstrated, including applications for commercial
products such as RFID tags. However, the full impact of this approach will
only be realized once these systems can be programmed or reconfigured on
demand (i.e.attachment between components is activated by software). In this
talk, we review several projects that lead towards such self-assembling
systems. A key concept to achieve this goal is the “programmable surface”,
an engineered surface whose characteristics (surface forces, hydrophobicity,
friction, etc.) can be controlled with high spatial and temporal resolution.
We present several projects that address various aspects ranging from
real-time control of surface properties, to binding site designs that
optimize attractive forces between components, to computational and
algorithmic issues in the modeling of selfassembling systems.
Biography
Karl Böhringer is
Professor of Electrical Engineering with adjunct appointments in Computer
Science & Engineering and in Mechanical Engineering at the University of
Washington, Seattle. He received both his M.S. and Ph.D. degrees in Computer
Science from Cornell University and his Diplom-Informatiker degree from the
University of Karlsruhe, Germany. He was a visiting scholar at the Stanford
Robotics Lab and Transducer Lab and a postdoctoral researcher at the
University of California, Berkeley, before joining the faculty at the
University of Washington.His current interests include micromanipulation and
microassembly, as well as biomedical implants and bioMEMS for single-cell
genomics and proteomics. His Ph.D. thesis was nominated for the ACM doctoral
dissertation award. He received an NSF postdoctoral associateship in 1997,
an NSF CAREER award in 1999, and was an NSF New Century Scholar in 2000. His
work was featured among the Top 100 Science Stories in Discover Magazine’s
2002 “Year in Science”. In 2004, he received the IEEE Robotics and
Automation Society Academic Early Career Award and a sabbatical fellowship
from the Japan Society for the Promotion of Science (JSPS).
Robust
Electrostatic Discharge (ESD) Protection in CMOS Technology
Juin J. Liou
Electrical and Computer Engineering
University of Central Florida
Date
and Time:
Monday 08 September 2006, 11:00am
Location:
Applied
Sciences Bldg, ASB 9705, Simon Fraser University, Burnaby Campus (map)
Abstract
Electrostatic discharge (ESD) is a process in which a finite amount of
charge is transferred from one object (i.e., human body) to the other (i.e.,
microchip). This process can result in a very high current passing through
the microchip within a very short period of time, and more than 35% of chip
damages can be attributed to such an event. As such, designing robust
on-chip ESD structures to protect microchips against ESD stress is a high
priority in the semiconductor industry. An overview on the ESD sources,
models, and protection schemes will first be given in this talk. This is
followed by examples of a recent development of robust ESD solutions for
protecting data communication transceivers and gas-sensor microchips.
Biography
Juin J. Liou received the
B.S. (honors), M.S., and Ph.D. degrees in electrical engineering from the
University of Florida, Gainesville, in 1982, 1983, and 1987, respectively.
In 1987, he joined the Department of Electrical and Computer Engineering at
the University of Central Florida, Orlando, Florida where he is now a
Professor. His current research interests are Micro/ nanoelectronics
computer-aided design, RF device modeling and simulation, and semiconductor
manufacturing and reliability.
Dr. Liou
has filed 3 patents, and has published 6 textbooks (another in progress),
more than 200 journal papers (including 13 invited articles), and more than
150 papers (including 50 keynote or invited papers) in international and
national conference proceedings. He has been awarded more than $6.5 million
of research contracts and grants from federal agencies (i.e., NSF, DARPA,
Navy, Air Force, NIST), state government, and industry (i.e., Semiconductor
Research Corp., Intel Corp., Intersil Corp., Lucent Technologies, Alcatel
Space, Conexant Systems, Texas Instruments, Fairchild Semiconductor, RF
Micro Device, Lockheed Martin), and has held consulting positions with
research laboratories and companies in the United States, Japan, Taiwan, and
Singapore. In addition, Dr. Liou serves as a technical reviewer for various
journals and publishers, general chair or technical program chair for many
international conferences, and regional editor (in USA, Canada and South
America) for the journal Microelectronics Reliability.
Dr. Liou
received ten different awards on excellence in teaching and research from
the University of Central Florida (UCF) and six different awards from the
IEEE Electron Device Society (EDS). Among them, he was awarded the UCF
Distinguished Researcher Award three times (1992, 1998, 2002), UCF Research
Incentive Award two times (2000, 2005), and IEEE Joseph M. Biedenbach
Outstanding Educator Award in 2004 for his exemplary teaching, research, and
international collaboration. His other honors include Fellow of the IEE, Cao
Guang-Biao Endowed Professor of Zhejiang University, China, Consultant
Professor of Huazhong University of Science and Technology, Wuhan, China,
Courtesy Professor of South China University of Technology, Guangzhou,
China, IEEE EDS Distinguished Lecturer, and National Science Council
Distinguished Lecturer.
Dr. Liou
is the IEEE EDS Vice President for Regions/Chapters, IEEE EDS Treasurer,
IEEE EDS Finance Committee Chair, elected member of IEEE EDS Administrative
Committee, member of IEEE EDS Educational Activities Committee, and Senior
Member of IEEE.
Invited by:
Karim S. Karim, School of Engineering
Science
Sponsors:
Silicon Thin-film Applied Research (STAR)
group
Development
of a Fully Functional Artificial Eye Prosthesis
Prof. Andrew
Rawicz
Simon Fraser University
Date
and Time:
Wednesday 09 November 2005, 11:00am
Location:
Applied
Sciences Bldg, ASB 9896, Simon Fraser University, Burnaby Campus (map)
Abstract
This
presentation summarizes the accomplishments to date in the development of the
"artificial eye" -- a fully functional eye prosthesis --which we hope
to use in the future as an implant in people who have lost their vision due to
eye damage. The future work necessary to bring the eye project to fruition is
explained, and two important tasks, which we do not yet know how to solve, are
described in the hope of stimulating a broad discussion within the scientific
community. The summary of the historical developments in this field is followed
by our accomplishments. The components of the eye that have been developed and
tested to date are color processing receptive fields, variablefocus lenses, and
local and global brightness adaptation systems. A constraint imposed on the components
of the artificial eye is the requirement of minimal or no power draw. Following
this condition, the components were developed using mainly passive, photonic properties
of nonlinear optical materials. Color receptive fields are fabricated of photo-luminescent
concentrators and photovoltaic detectors set in a multilayer stacked system allowing
for color processing. Local and global adaptation is accommodated using the photochromic
properties of some nonlinear optical materials. A variable focus lens is made
of transparent elastic membranes filled with a refractive liquid, and focal length
is changed by radial stretching. This modification to the lens was made to accommodate
cataract patients. Two important aspects of the research that will also be discussed,
and which are yet unsolved, include proper encoding of visual signals before transmission
to the brain and methods for physical transmission of the encoded signals to the
visual cortex.
Biography Educated
in Poland, where he received his M.Sc in physics, Krakow, 1973, followed in 1980
with a Ph.D. in Reliability Physics from the Faculty of Automatics and Real Time
Informatics, Silesian Technical University, Gliwice. Dr. Rawicz later immigrated
to Canada in 1982 after working at the Industrial Welding Institute in Gliwice
for six years and as an Assistant Professor in Silesian Technical Univ. After
two year work as a designer of optical equipment for eye research at the University
of British Columbia he moved to the School of Engineering Science at Simon Fraser
University, where, at present, he is full professor. He proposed and is championing
an interdepartmental Biomedical Engineering (BME) program with the first undergraduate
curriculum in Canada. In the 90ties he served on the SFU Senate. In 1986 he founded
Andrew Engineering Inc. and in 1998 Applied Medical Devices Inc. Both these companies
do R&D in developing new medical equipment and/or new medical technologies. In
1994 he co-founded OPCOM (Optical Processing and Computing Consortium of Canada)
with financing totalling $20MCan and served for five years as a director and steering
committee member.
Invited by:
Karim S. Karim, School of Engineering
Science
Sponsors:
Silicon Thin-film Applied Research (STAR)
group
Past
Events Quantum
Cascade Lasers
Dr. Shahriar Khosravani
Henry Cogswell
College, Everett WA
Date
and Time:
Friday 14 October 2005, 3:00 pm - 4:00 pm
Location:
Applied
Sciences Bldg, ASB 9705, Simon Fraser University, Burnaby Campus (map)
Abstract
Quantum
cascade lasers are unipolar light sources. This unique characteristic of QCLís
gives a new meaning to band gap engineering. Theoretically, the spectral range
of a device can be chosen from a continuum and the structure can be fabricated
accordingly, ranging from ~ 3.5 µm up to THz region. Furthermore,
in comparison to the typical heterostructure semiconductor lasers, these devices
are inherently efficient (electron recycling). The CQD lab at Northwestern University
has already demonstrated a ë=6 µm with CW output power of 0.6W from a HR coated
9 µm buried ridge at 298 K. As one can expect, there are some real challenges
with the development of QCLís. Thermal management, growth process reproducibility
(i.e. yield factor) and relatively wide spectral linewidth are major issues with
the QCL design. In this seminar, a brief review of the QCL device structure, its
performance and applications will be presented.
Biography
Shahriar
received his Bachelor of Science degree in applied nuclear physics from Shiraz
University, Iran. He received his Ph.D. degree in the area of optoelectronics
from department of Electrical Engineering, University of Oklahoma. During this
period, he joined Crosslight software company, Burnaby, BC, as a research engineer.
Crosslight specializes in semiconductor simulation programs. There he developed
several simulation programs including scalar optical modes analysis of VCSEL based
on effective refractive index method, multi-quantum wells band structure analysis
based on effective mass and Luttinger-Kohn (KP) approximation methods. Soon after
his graduation from the University of Oklahoma, he joined as a postdoctoral fellow
and principal investigator at the Center for Quantum Devices of Northwestern University,
Evanston, IL. During that time, he worked on several QCL related projects and
a new growth process of type II superlattice MIR focal plane array detectors.
He later joined Henry Cogswell College in Everett, WA as an adjunct professor.
Invited
by:
Karim S. Karim, School of Engineering Science
Sponsors:
IEEE Vancouver Section (Joint Electron Devices - ED)
Reverse
engineering the cell
Dr. Asim Siddiqui
Group Leader,
Bioinformatics, Genome Sciences Centre, Vancouver, BC
Date
and Time:
Friday July 8th, 2005 10:30 am - 11:30 am
Location:
Applied
Sciences Bldg, ASB 9896, Simon Fraser University, Burnaby Campus (map)
Abstract
A
deep understanding of mammalian development requires us to understand the state
of a cell of a particular cell type at a particular developmental time point and
the switches that turn genes on or off and changing the cell's state. The Mouse
Atlas project is generating a gene expression resource that will define the normal
state for many tissues using individual cell types and tissues, whenever possible.
Tissues at multiple development stages are taken, from single cell zygote to adult,
with the timeframes being chosen to focus on a period in which a relevant morphological
or functional change takes place in the tissue. On completion of the project,
we will have characterized the gene expression in 200 tissues, with over 120 having
been completed at this time. The
cisRed project is defining the regulatory control elements or binding motifs to
which transcription factors bind triggering the transcription of genes. Starting
with a set of co-expressed and orthologous genes and building on the assumption
that these sets of genes are activated by the same set of transcription factor,
the cisRed pipeline runs a number of motif detection pipelines in parallel to
identify those motifs shared by the upstream regions of these genes. Combining
the data from these two resources may aid us in identifying the regulatory motifs
to which transcription factors are bound and help us to begin to decode the cascade
of regulatory events that occurs during development and organogenesis.
Biography
Dr.
Siddiqui received his PhD in Bioinformatics from Oxford University for computational
analysis of protein structure and a B.A. (Physics) from Cambridge University.
Dr. Siddiqui has over 12 years of combined research/industry experience in Sr.
research, software engineering and leadership positions. He is presently the Group
Leader, Bioinformatics at the Genome Sciences Centre where he leads and manages
a team of approximately 60 bioinformaticians, software engineers and IT personnel.
The team supports the bioinformatics component of projects worth over $135M dollars.
The GSC is well known for the rapid sequencing of the SARS coronavirus. Dr. Siddiqui's
major scientific contributions have been in the area of gene expression analysis,
gene regulatory networks and modules, whole genome assembly and genome mapping.
He is particularly interested in how changes in gene expression are regulated
and how that regulation leads to cell differentiation and organogenesis during
development. Prior to joining Genome Sciences Centre, Dr. Siddiqui gained substantial
industry experience developing critical, high availability systems in the space
and telecommunications industries (MacDonald Dettwiler & Associates www.mda.ca
and Nortel Networks www.nortelnetworks.com).
Invited by:
Karim S. Karim, School of Engineering Science
Sponsors:
Silicon Thin-film Applied Research (STAR) group (http://star.ensc.sfu.ca),
IEEE Vancouver Section (Joint Electron Devices - ED, Engineering in Medicine and
Biology Society - EMBS)
Polymer
Devices: Transistors, Supercapacitors and Actuators
Dr.
John Madden
Electrical and Computer Engineering, University of British Columbia
Date
and Time:
Friday July 29th, 2005, 10:30 am - 11:30 am
Location:
Applied
Sciences Bldg, ASB 9896, Simon Fraser University, Burnaby Campus (map)
Abstract
Polymer-based
devices offer the opportunity to create integrated electrical and mechanical systems
at very low cost. Work on three system components that employ electronically conducting
polymers as active materials will be presented. The first is a transistor design
that promises to offer low voltage operation (< 3V) and low cost fabrication,
enabling widespread application of polymer-based circuits. The second employs
conducting polymers as electrodes in capacitors that exhibit 100 F/g. Although
the capacitance is high, two improvements need to be made to make these capacitors
compete with battery technology: the energy density and power need to be increased.
Methods currently being employed to improve mass transport and voltage will be
presented. Finally conducting polymers undergo dimensional changes as they are
electrochemically oxidized or reduced. The mechanisms of actuation, basic properties,
and some early applications of these low voltage 'artificial muscles' will be
discussed.
Biography
Dr. John Madden received his PhD
in Mechanical Engineering from Massachusetts Institute of Technology in 2000.
His current research interests include the synthesis, fabrication, characterization
and modeling of novel materials designed from the molecular scale to optimize
electrical, mechanical, chemical, and optical responses.
Invited by:
Karim S. Karim, School of Engineering Science
Sponsors:
Silicon Thin-film Applied Research (STAR) group (http://star.ensc.sfu.ca),
IEEE Vancouver Section (Joint Electron Devices - ED, Engineering in Medicine and
Biology Society - EMBS)
Current
Transport and Light Emission in Organic Field Effect Transistors (OFETs)
Dr.
Harry Kwok
Dept. of Electrical and Computer Engineering
University of Victoria
Date
and Time:
Friday, November 12, 2004 (3:00pm)
Location:
Applied
Sciences Bldg, ASB 9896, Simon Fraser University, Burnaby Campus (map)
Abstract
Light
emission in OFETs is possible if ambipolar recombination exits in the OFET channel.
The key ingredient is that both the hole density and the electron density must
be high in the recombination region. In the standard inverted hole-dominated OFETs,
a hole channel is formed when the gate-source voltage is sufficiently negative
and electron injection may occur at high field near the negatively biased electrode.
This gives rise to the frequently observed I-V characteristics. Maximum light
output will occur when both the gate-source voltage and the drain-source voltage
are at their peak. For such a three-terminal device, it is interesting to determine
the effect of gate bias on the light emission process. As observed in data reported
in the literature by Hepp et al, light emission diminishes when (VDS - VGS) is
negative for a fixed VDS. This suggests possible electron withdrawal from the
channel. A plot of the differential drain-source current versus (VDS - VGS) showed
a semi-logarithmic relationship supporting the possibility that electrons are
diverted to the silicon substrate. The observed localization in the light emission
process may be explained by a short electron recombination lifetime as observed
in many organic semiconductors.
Biography
Dr. Harry Kwok
obtained his Ph.D. in Electrical Engineering and is currently a Professor and
Co-director of the Center for Advanced Materials and Related Technology (CAMTEC).
His research interests are in materials, devices, circuits and applications. He
has worked with processing technology, ion implantation, thin films, as well as
Bipolar, CMOS and GaAs IC design. His recent research include: i) collaboration
with researchers at TRIUMF (Tri-University Meson Facility) in the development
of high-speed charge-coupled device transient digitizers for the study of kaon
decay in EXP787 at Brookhaven National Lab, USA; ii) collaboration with researchers
at BCCA (British Columbia Cancer Agency) in the development of an intra-operative
ultra compact gamma-ray camera using hybrid multi-pixel hybrid photodiodes (M-HPD)
for the study and detection of malignant lymph nodes; iii) development of image
sensors (and other types of sensors) and related processing circuits; iv) modeling
and development of polymer devices for use in display. The above projects have
been supported by NSERC, Micronet (National Center of Excellence), BC Health Research
Foundation, and BC Advanced Systems Institute.
Invited by:
Karim
S. Karim, School of Engineering Science
Sponsors:
Silicon Thin-film
Applied Research (STAR) group (http://star.ensc.sfu.ca), IEEE Vancouver Chapter
Evolution
and Recent Advances in RF/Microwave Transistors
Juin J.
Liou
Dept. of Electrical and Computer Engineering
Director, Solid State
Electronics Lab and Device Characterization Lab
University of Central Florida
 
Dr.
Juin J. Liou, an IEEE EDS distinguished lecturer and a vice-chair of the EDS SRC/NAE,
visited the newly established ED Vancouver Chapter in Vancouver, Canada on Sept.
10, 2004. During his visit, Dr. Liou gave a distinguished lecture on "Evolution
and Recent Advances on RF/Microwave Semiconductor Devices." More than 50
people attended the 90-min talk held on the campus of Simon Fraser University
(SFU) in Burnaby, a suburb of Vancouver. Following the DL, a dinner was arranged
by the ED Vancouver Chapter Chair, Dr. Karim Karim. Four faculty members in the
Engineering Science Dept. at SFU also attended the dinner. Future activities and
needs of the ED Vancouver Chapter were discussed. Dr. Karim indicated that he
would like to host 4 to 5 DL's each year and hoped that the funding from the IEEE
could be increased to support these activities. To further enhance the Chapter
visibility, Dr. Liou suggested the possibility of hosting an EDS sponsored international
conference or an EDS AdCom meeting in Vancouver in the future.
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