Title: ECE news
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Title: ECE news
Physical Description: Serial
Language: English
Creator: Department of Electrical and Computer Engineering, College of Engineering, University of Florida
Publisher: Department of Electrical and Computer Engineering, College of Engineering, University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: Summer 2009
Copyright Date: 2009
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Bibliographic ID: UF00091053
Volume ID: VID00014
Source Institution: University of Florida
Holding Location: University of Florida
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Electrical & Computer

E ng ine ering


Two Junior Faculty Members
Receive NSF CAREER Award

Assistant Professors Jing Guo and Tao Li, received the National
Science Foundation (NSF) Faculty Early Career Development (CA-
REER) award.

The Career program is the NSF's most prestigious award for new
faculty members, designed to recognize and support the early
career-development activities of those teacher-scholars who are
most likely to become the academic leaders of the 21st century.

Dr. Jing Guo received the CAREER award for his proposal
"QMHP: A Multiphenomena Simulator toward New Functionalities
of All-Graphene Devices".

This NSF Career proposal focuses on the de-
velopment of multiphenomena device physics
of a patterned graphene to a point where
new classes of devices can be conceived and
simulated. The research would enable en-
gineering graphene for integration of com- ,,
munication, data storage, and imaging func-
tionalities into existing integrated circuit
technologies, and thus significantly extend
the chip capacity through functional diver-
si "cation.

A team of scientists and engineers from
Stanford University, the University of Florida and Lawrence Liv-
ermore National Laboratory is the first to create one of two basic
types of semiconductors using an exotic, new, one-atom-thick ma-
terial called graphene.

The findings could help open the door to computer chips that are
not only smaller and hold more memory but are also more adept
at uploading large files, downloading movies, and other data and
communication i intensive tasks.






"There are still enormous challenges to really
put it i nto products, but I thi nk this really could
play an important role," said Guo. "

The team made, modeled and tested what is
known in the industry as an "n-type" transistor
out of graphene nanoribbon. Graphene is a form
of carbon that has been called "atomic chicken
wire," thanks to its honeycomb-like structure
of interconnected hexagons. A graphene na-
noribbon is a nanometer-wide strip cut from a
graphene layer.

The team's feat is significant because basic tran-
sistors come in only two forms "p-type" and
"n-type" referring to the presence of holes
and electrons, respectively. "P-type" graphene
semiconductors had already been achieved, so
the manufacture of an "n-type" graphene semi-
conductor completes the fundamental building
blocks.

This work is essentially finding a new way to
modify a graphene nanoribbon to make it able to
conduct electrons," Guo said. "This addresses a
very fundamental requirement for graphene to
be useful in the production of electronics."

This work is essentially finding a new way to
modify a graphene nanoribbon to make it able to
conduct electrons," Guo said. "This addresses a
very fundamental requirement for graphene to
be useful in the production of electronics."

Guo said the team built and modeled the first-
ever graphene nanoribbon n-type "field-effect
transistor" using a new and novel method that
involves affixing nitrogen atoms to the edge of
the nanoribbon. The method also has the poten-
tial to make the edges of the nanometer-wide
ribbon smoother, which is a key factor to make
the transistor faster.

"This uses chemistry to really address the ma-
jor challenges of electrical engineering when
you get into these small nanoscale dimension-
alities," he said. "It is very unusual for electri-
cal engineers, who are used to dealing with bulk
structures of at least millions of atoms."


As exciting as the findings are, researchers
must overcome many challenges before gra-
phene semiconductors could be manufactured in
bulk for use in consumer products, Guo said. For
one thing, graphene is extremely expensive, so
its cost would have to be reduced substantially.
AlIso, to m i mic or exceed s ili co n, engi neers woulId
have to determine how to build not just one, but
billions of transistors, on a tiny graphene fleck.

Guo joined the faculty in 2004. He received
his doctoral degree from Purdue University in
2004. His current research focuses on mod-
eling and simulation of nanoelectronic devices,
carbon nanotube electronics and photonics,
physics of nanotransistors, computational nano-
biotechnology.

br. Too Li received his CAREER award for
his proposal "New Foundations for Many-core
Architecture Analysis, Modeling and Manage-
ment".
This NSF Career
proposal focuses on
constructing new
foundations for
many-core scale ar-
chitecture analysis,
.. modeling and opti-
mization, including:
,, .....(1) informative and
scalable methods to
capture architec-
tural characteristics
across many-cores
and hardware com-
ponents; (2) fast and
accurate predictive
models to forecast the complex behavior of
many-core architecture substrates with widely
varied configuration parameters and execution
conditions; (3) hardware and software mecha-
nisms for efficient mining of architecture char-
acteristics at large scales; and (4) global and
cooperative resource and thermal management
techniques for many-core architectures. A uni-
fied framework integrating the above analysis
methods, models and software/ hardware sup-
port will be developed in this project.






Li also joined the faculty in 2004. He received
his degree from the University of Texas at Aus-
tin. His research interests include computer
and digital system architecture; interaction of
computer architecture, emerging applications,
operating systems, programming language fea-
tures, managed run-time environments; model-
ing, simulation and evaluation of computer sys-
tems.



In MemorIGm

Dr. Jack R. Smith

Jack Reginald Smith, Phb, P.E., 73, died on
Thursday, June 11, 2009, at Shands Hospital
from complications of pulmonary fibrosis.

Dr. Smith was a professor of electrical engi-
neering at the University of Florida for 30
years and an entrepreneur, founding two com-
panies that developed software for automated
sleep analysis.

Born in North Dakota on June 16, 1935, he was
the son of Henry R. Smith and Laura Kornkven.
He spent his youth in Minnesota and moved to
Los Angeles in his teens. He attended Menlo
College prior to enlisting in the army in 1953.
He was honorably discharged and completed his
BS, MS, and PhD in electrical engineering at the
University of Southern California.

After working in both the space and military
i industries, Dr. Smith joi ned the Electrical Engi-
neering Department of the University of Flor-
ida as an assistant professor in 1964, electing
to work in the biomedical engineering field. At
the university, Dr. Smith worked with Dr. Wilse
Webb and Dr. Ismet Karajan to develop quan-
titative techniques for sleep analysis. He also
worked with UCLA's Space Biology laboratory
and spent the academic year 1970-71 in Cassis,
France, collaborating with researchers at the
University of Marseille.

Dr. Smith spent two more academic sabbaticals
helping develop sleep instrumentation: in 1978


with the late Jean-Michel Gaillard at the Medi-
cal School of Geneva, Switzerland, and in 1985
with Japanese colleagues at the Tokyo Metro-
politan Research Institute. His textbook, Mod-
ern Communication Circuits, is in its second edi-
tion and is still widely used. In 1986, Dr. Smith
started Microtronics, Inc., developing sleep
analyzing computers. He sold Microtronics to
Oxford Medical in 1990.

After the sale of Microtronics, he returned
to the University of Florida until he retired as
professor emeritus in 1994. He also served as a
consultant to Motorola in Plantation, Florida.

After his retirement from UF, he developed
another sleep analyzing system, the Polysmith,
with his company Neurotronics. Neurotronics
was sold to the Japanese company Nihon Koh-
den in December 2008 but Dr. Smith remained
as Chairman of Neurotronics, Inc.

Dr. Smith's inter-
ests were many
and varied. He was
the amateur chess
champion of Florida
in 1968; he enjoyed
handball; and poker
remained a part of
his life until a few
weeks before he
passed away. His
love of fishing, cul-
tures and his busi-
ness led him to many
other countries. He
enjoyed growing or-
chids, enticing birds to his many birdhouses, and
boating on the lake with his chocolate labrador
retrievers. He was a supporter of the arts as
well as conservation and environmental organi-
zations, and he was an advocate for the home-
less. He read widely and voraciously.

The family has requested that expressions of
sympathy may be made as donations to Habitat
for Humanity, The Salvation Army, the Harn
Museum, or a charity of your choice.





















































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