Development of Highly Efficient Lamb Wave Transducers toward Dual-Surface Simultaneous Atomization
Sensors,
Год журнала:
2024,
Номер
24(17), С. 5607 - 5607
Опубликована: Авг. 29, 2024
Highly
efficient
surface
acoustic
wave
(SAW)
transducers
offer
significant
advantages
for
microfluidic
atomization.
Aiming
at
highly
atomization,
we
innovatively
accomplish
dual-surface
simultaneous
atomization
by
strategically
positioning
the
liquid
supply
outside
IDT
aperture
edge.
Initially,
optimize
Lamb
and
specifically
investigate
their
performance
based
on
ratio
of
substrate
thickness
to
wavelength.
When
this
h/λ
is
approximately
1.25,
electromechanical
coupling
coefficient
A
Язык: Английский
Mathematical Models for Ultrasound Elastography: Recent Advances to Improve Accuracy and Clinical Utility
Bioengineering,
Год журнала:
2024,
Номер
11(10), С. 991 - 991
Опубликована: Сен. 30, 2024
Changes
in
biomechanical
properties
such
as
elasticity
modulus,
viscosity,
and
poroelastic
features
are
linked
to
the
health
status
of
biological
tissues.
Ultrasound
elastography
is
a
non-invasive
imaging
tool
that
quantitatively
maps
these
characteristics
for
diagnostic
treatment
monitoring
purposes.
Mathematical
models
essential
ultrasound
they
convert
raw
data
obtained
from
tissue
displacement
caused
by
waves
into
images
observed
clinicians.
This
article
reviews
available
mathematical
frameworks
continuum
mechanics
extracting
tissues
elastography.
Continuum-mechanics-based
approaches
classical
viscoelasticity,
elasticity,
poroelasticity
models,
well
nonlocal
continuum-based
described.
The
accuracy
can
be
increased
with
recent
advancements
modelling
techniques
including
hyperelasticity,
biphasic
theory,
inversion-based
incorporating
scale
effects.
However,
time
taken
clinical
increases
more
complex
this
major
challenge
expanding
utility
As
we
strive
provide
most
accurate
patients,
further
research
needed
refine
incorporation
workflow.
Язык: Английский
Numerical simulation of impulse-induced surface acoustic waves for elastography purposes using k-Wave simulation toolbox
Journal of Applied Physics,
Год журнала:
2024,
Номер
136(16)
Опубликована: Окт. 22, 2024
As
elastography,
an
emerging
medical
imaging
strategy,
advances,
surface
acoustic
waves
have
been
utilized
to
examine
superficial
tissues
quantitatively.
So
far,
most
studies
are
experimental,
and
a
numerical
method
is
needed
cost-effectively
investigate
wave
generation
propagation
for
technical
development
optimization
purposes.
This
study
aims
develop
reliable
simulating
impulse-induced
using
the
k-wave
simulation
toolbox.
According
physical
process
of
based
proposed
consists
two
stages:
compressional
elastic
simulation,
which
aim
generate
radiation
force
impulse
waves,
respectively.
The
procedures
were
demonstrated
by
on
water–tissue
model.
Meanwhile,
three
modeling
methods
adopted.
showed
that
could
produce
similar
distribution
in
space
but
largely
different
amplitudes.
confirmed
feasibility
numerically
generating
waves.
reliability
simulated
was
verified
quantitative
comparison
between
acquired
sound
speeds
their
theoretical
expectations
qualitative
generated
experimental
observations
under
conditions.
In
summary,
this
confirms
as
effective
elastography
provides
immediate
platform
investigating
Scholte
at
liquid–solid
interface,
also,
potential
framework
other
Язык: Английский