Please note that the notice sent out minutes ago was incorrect. The time for the seminar is 10:00 a.m. This has been corrected. My apologies.
Please consider attending the following:
MATERIALS ENGINEERING
“Investigation of Laser-Matter Interaction Utilizing Advanced Transmission Electron Microscopy”
By
Xiaohui Xu
Purdue MSE Ph.D. Preliminary Exam
Advisor: Professor Volkan Ortalan
ABSTRACT
Laser-matter
interactions
have
been
extensively investigated
in the
past few
decades.
Specifically,
pulsed laser
owns unique
properties
compared
with continuous
wave
laser, which
makes
it popular
in many
fields.
The effect
of pulsed
laser
on materials
is related
to the
nature of
the material
and
width of
laser
pulse duration.
By
carefully adjusting
laser pulse
width and
selecting
the materials,
laser synthesis
can be
achieved either
by
a bottom-up
or a
top-down way.
Laser
welding of
plasmonic materials
is another
significant
research
area, whose
mechanisms have
not been
fully understood.
With the
advent
of the
ultrafast
transmission
electron
microscopy (UTEM),
the in-situ
investigation
of laser-matter
interactions
becomes
possible with
both high
spatial
and
temporal
resolutions. Therefore,
it is
a unique
instrument
to
explore possible
laser
synthesis
routes
and
to obtain
fundamental
insights into
the mechanisms
of laser-matter
interactions in
general.
Keywords:
pulsed lasers,
ultrafast
transmission
electron
microscopy,
laser-matter
interactions,
laser
synthesis, plasmonic
nanostructures.
Date: Tuesday, November 7, 2017
Time: 10:00
A.M.
Place: PHY 110