Please consider attending the following Monday, Oct. 23, at 11:00 a.m., in FRNY G124:
MATERIALS ENGINEERING
“Fundamental Materials Topics Related to Optical Metamaterial Design and Fabrication”
By
Xuejing Wang
Purdue MSE Ph.D. Preliminary Exam
Advisor: Professor Haiyan Wang
ABSTRACT
Optical
metamaterial
has
triggered
extensive studies
driven
by its
fascinating
electromagnetic
properties
that
are
not observed
in natural
materials.
Aside
from
huge
progresses,
there
are certain
obstacles
or challenges
in design
and fabrication
processes
that
limit the
metamaterial
towards
real
applications.
Starting
from
design, resolving
the losses
from metallic
nanocomponents
and reaching
optical
frequencies
of negative
index
metamaterials are
two
of the
most critical
topics,
which
can
potentially be addressed
by
“smart”
designs
to achieve
desired
properties.
Such
artificially designed
nanostructures
pose difficulties
in fabrication
since
the conventionally
used
e-beam lithography
technique
has
such
limitations
as
time-
consuming
and
accompanying
defects. Along
with
improvements
of nanolithography
techniques,
there
have
been
explorations
in growing
metamaterial
by alternative
approaches
(e.g.
template
assisted
growth,
physical
vapor deposition,
direct
laser
writing),
examples on
selected
metamaterial
fabrication
methods are presented
with
highlights on their induced
material imperfections
and possible solutions.
Date: Monday, October 23, 2017
Time: 11:00 A.M.
Place: FRNY G124