Advance technologies for production of polymeric nanofibers and specific nanofibrous structures
The Waterloo Institute for Nanotechnology (WIN) is pleased to present a seminar with Jan Valtera, Assoc. Professor and Vice-Dean for International and Public Relations from the Faculty of Mechanical Engineering, Technical University of Liberec.
This seminar is titled "Advance technologies for production of polymeric nanofibers and specific nanofibrous structures," and will be held on Thursday June 8, 2023 at 11:00 AM in QNC 1501. Registration is required!
Abstract
Polymeric
nanofibers
are
the
subject
of
material
research
in
many
areas,
e.g
for
medical
and
technical
application.
Out
of
the
many
techniques
for
production
of
polymeric
nanofibers
the
electrospinning
is
the
most
common
industrial
technology
for
preparation
of
polymeric
nanofibers.
The
Technical
University
of
Liberec
has
contributed
significantly
to
the
development
of
direct
current
(DC)
electrospinning
and
recently
also
the
alternating
current
(AC)
electrospiining
technology.
DC
electrospinning
has
been
used
world
wide
in
both
laboratory
and
industrial
scales
(e.g.
with
machines
Nanospider
by
Elmarco
s.r.o.,Czech
Republic).
The
production
of
nanofibers
using
the
AC
electrospinining
allows
highly
effective
production
of
nanofibers
without
any
physical
collector.
Further
more,
the
absence
of
physical
collector
opens
up
possibilities
of
production
various
nanofibrous
structures,
e.g
composite
yarn
contaning
nanofibers
and
braided
linear
structures
for
medical
sutures,
membranes
that
were
used
in
the
first
wave
of
Covid-19
to
overcame
the
lack
of
protection
masks.
The
presentation
is
focused
on
techniques
for
production
of
nanofibers
with
emphasize
to
the
AC
electrospining
as
the
state
of
art
technology.
The
general
design
concepts
of
spinning
machines
and
the
electrodes
including
electric
field
analysis
is
discussed.
The
goal
of
this
seminar
is
to
present
new
reserch
results
in
nanofiber
materials
and
nanofibrus
fabrics
to
students
and
experts
in
this
field.
Presentation
and
discussion
should
also
help
to
connect
research
teams
as
well
as
institutions
to
strenghten
the
international
collaboration
in
both
the
reserach
and
student
exchange
activities.
Biography
Jan Valtera studied at the Faculty of Mechanical Engineering of the Technical University of Liberec, in Czech Republic, where he also obtained his Ph.D. in 2014. He is currently an assistant professor at the Department of Textile Machine Design and also the Vice-Dean for the International and Public Affairs at the Faculty of Mechanical Engineering.
In 2009-2010 he spent 12 months as a visiting scholar at the City University of London, School of Engineering and Computer Science. The main research tasks he covers relate to design of machines and devices for production of nanomaterials, simulation of electric and magnetic field and implementation of magnetic systems into dynamic applications.
In his pedagogical work, he focuses on topics related to the construction of machines, especially in the field of spinning machines and machines for the production of nanofibers. He is currently guarantor of four subjects and delivers lectures in selected parts of other 8 subjects at the Faculty of Mechanical Engineering.
He is author or co-author of more than 40 journal and conference papers and co-author of 8 patents granted by the industrial patent office. As a principal investigator he carried out several research projects related to design of machines for production polymeric nanofibers and nanofibrous structures. He is a member of university research team working on various contract research projects under the Nano Technology Cluster Nanoprogress on R&D of machines and devices for production of nanofibers using DC and AC electrospinning technology and novel nanofiber materials.
More information are available at: http://www.fs.tul.cz/en/