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>>
Recent Publications
A
list of recent
journal articles from the Johnson research group can be found at the
research page.
>> Other News
& Updates
2009:
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Former Ph.D. student Jeong Ho You is the lead author
of an invited contribution to the edited series Solid State Physics, (Volume 61, 2009) entitled, “Effect of
Dislocations on Electrical and Optical Properties of GaAs and GaN.” Dr. You will join the faculty of
mechanical engineering at Southern Methodist University in Fall 2009.
·
The group welcomes postdoctoral researcher Andrey
Semichaevsky, and new graduate students Kallol Das and Manish Yadav.
2008:
·
On October 12th-15th, the
University of Illinois hosted the Society
of Engineering Science 2008 Annual Conference. The conference
drew more than 540 attendees in the areas of solid mechanics, biomechanics,
fluid mechanics, and applied mathematics. Prof. Johnson was the
General Chair of the conference.
·
Postdoc Dong Xiao's work on approximate optical
cloaking has attracted media attention from around the world. The UI
press release can be found here.
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We develop new atomistic
modeling methods such as tight-binding, to study nanotubes, quantum dots,
and defects and interfaces in electronic materials.
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We study the mechanics of
quantum dots, or nanoscale material clusters, including the effects of
stress on formation and properties of these structures.
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We use finite element based
computational electromagnetics to study the effects of defects and disorder
in photonic bandgap devices.
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Using molecular dynamics and
continuum modeling, we study the development of stress in MEMS devices
and microelectronic materials due to ion-bombardment processing.
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We study dislocations in
electronic materials to understand how strain and electronic structure
affect device properties.
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We use continuum and atomistic
models to study the electrical properties of deformed carbon nanotubes.
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We study nanoscale surface
instabilities using multiscale atomistic & continuum methods.
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Combining finite element
analysis and nonlinear topology optimization methods, we design optimized
nanophotonic devices.
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