Physical review. B./Physical review. B,
Год журнала:
2025,
Номер
111(21)
Опубликована: Июнь 2, 2025
We
investigated
surface
acoustic
wave
(SAW)
propagation
and
lattice
vibrations
in
two-dimensional
(2D)
titanium
carbide
(Ti3C2Tx)
MXene
films
as
a
function
of
termination
layer
stacking,
using
atomistic
simulations.
found
that
SAW
velocity
is
highly
sensitive
to
both
single-layer
properties
interlayer
bonding.
Surface
terminations
significantly
modulate
behavior,
with
oxygen
fluorine
producing
distinct
effects
on
propagation,
oxygen-terminated
monolayers
exhibiting
20%
higher
speeds
than
counterparts
due
strengthened
intralayer
bonds.
Key
observations
include
the
transition
from
one
two
layers
causing
speed
variations,
development
modes
generate
more
dispersed
vibrations.
As
film
thickness
increases,
becomes
predominantly
confined
upper
surface,
coherence
vibrational
diminishing
multilayer
structures.
These
findings
suggest
stacking
are
crucial
parameters
for
controlling
offering
promising
avenues
novel
device
applications.
Published
by
American
Physical
Society
2025
IEEE Sensors Journal,
Год журнала:
2023,
Номер
23(20), С. 24224 - 24230
Опубликована: Сен. 1, 2023
High
viscosity
measurement
is
critical
for
applications
such
as
food
manufacturing,
drug
development,
and
biomedical
diagnostics.
Vibration-based
devices
have
become
increasingly
popular
due
to
their
portability,
cost
efficiency,
low
sample
consumption.
However,
they
suffered
drawbacks
sensitivity
high
damping
noise
levels
when
measuring
high-viscosity
liquids
the
increased
hydrodynamic
loading
on
vibrating
structures.
In
this
work,
a
novel
drop-on-micropillar
(DOM)
concept
developed
improve
reduce
of
vibrational
viscometers
by
taking
advantage
liquid
drop
micropillar
array
under
non-wetting
state—Cassie
state.
meantime,
unique
resonance
phenomena
between
micropillars
acoustic
wave
substrate
(
$\mu
$
PAW)—quartz
crystal
resonator
(QCR)
can
significantly
original
device.
The
DOM
was
realized
fabricating
polymethyl
methacrylate
(PMMA)
QCR
surface
thermal
nanoimprinting
lithography
(T-NIL),
pillar
then
modified
through
chemical
vapor
deposition
(CVD)
technique
yield
superhydrophobic
surface.
frequency
shift
quality
factor
were
measured
deionized
water
aqueous
glycerol
solution
with
ranging
from
3
91.4
cP.
results
show
that
device
achieve
viscous
at
while
maintaining
(energy
dissipation)
within
an
acceptable
level.
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(5), С. 5713 - 5731
Опубликована: Янв. 10, 2024
Wireless,
passive,
and
capability
to
withstand
harsh
environment
make
the
surface
acoustic
wave
(SAW)
sensor
a
very
prominent
unique
among
others.
SAWs
are
basically
mechanical
waves
similar
sound
waves,
which
propagate
on
top
of
piezoelectric
material.
Comb-like
metallic
structures
deposited
material,
called
interdigital
electrode
transducer
(IDT),
this
helps
in
conversion
from
electromagnetic
(EM)
wave.
This
phenomenon
is
inverse
piezoelectricity.
Although
SAW
concept
not
new,
it
has
gained
much
attention
recent
years
because
its
specialty
when
used
as
sensor.
article
discusses
each
every
aspect
sensor,
including
antenna
design,
reader
architecture,
substrate
along
with
cut
direction,
IDT
structures,
application
various
domains.
Despite
having
properties,
there
certain
limitations
sensors.
These
have
also
been
discussed
article.
Finally,
we
areas
where
research
scope
persists
more
robust,
versatile,
industry-oriented.
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(6), С. 8674 - 8681
Опубликована: Янв. 25, 2024
Humidity
sensors
are
widely
used
in
many
applications
including
health
care,
pharmaceutical,
metrological,
food,
agricultural,
industrial
fields,
etc.
This
article
presents
a
unique
application
of
surface
acoustic
wave
(SAW)
resonator
for
developing
capacitive
humidity
sensor.
A
single
port
has
planar
interdigital
electrode
(IDE)
on
piezoelectric
substrate.
hydrophilic
thin
sensing
film
titanium
dioxide
(TiO2)
is
deposited
the
IDE
to
measure
relative
(%RH)
moist
gas
over
wide
dynamic
range.
Keysight
LCR
meter
(U1733C)
electrical
static
and
response
parameters
presence
at
1
kHz
frequency.
The
sensor
with
TiO2
excellent
performances,
such
as
high
sensitivity
(1.3
pF/%RH),
very
fast
response/recovery
time
(400/900
ms),
well
precision
range
5%RH–95%RH.
Experimental
results
show
that
output
consistent
repeatable
(0.5%).
device
can
be
wireless
measurement.
performances
competitive
those
described
literature.
small
size,
sensitivity,
response,
low
fabrication
cost,
broad
all
notable
advantages
IntechOpen eBooks,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
In
the
current
textile
industry,
traditional
yarn
tension
sensors
are
often
insufficient
for
demands
of
modern
manufacturing
processes.
As
a
result,
surface
acoustic
wave
(SAW)
sensor
has
emerged
as
an
ideal
alternative.
This
advanced
is
designed
to
enhance
efficiency
production
by
effectively
addressing
challenges
faced
in
environment.
this
chapter,
new
type
and
test
parameters
improved,
including
design
simulations
SAW
sensor,
solution
second-order
effect
problem
application
dual
differential
channel
oscillator
on
temperature
compensation
based
PSO-LSSVM
algorithm,
which
enhances
sensor’s
performance.
Micromachines,
Год журнала:
2025,
Номер
16(2), С. 170 - 170
Опубликована: Янв. 31, 2025
This
study
presents
the
development
and
characterization
of
a
novel
electronic
nose
system
based
on
customized
surface
acoustic
wave
(SAW)
sensors.
The
includes
four
sensors,
with
different
custom
polymer
coatings,
in
order
to
detect
volatile
organic
compounds
(VOCs).
main
innovation
lies
design
robust
versatile
switching
electronics
that
allows
for
integration
SAW
sensors
into
portable
systems,
as
well
interoperability
other
gas
sensor
technologies.
modular
architecture
multiple
arrays
be
combined
improve
selectivity
discrimination
complex
mixtures.
To
verify
proper
performance
detection
capability
manufactured
experimental
laboratory
tests
have
been
carried
out.
Specifically,
ethanol
acetone
measurements
up
2000
ppm
concentration
performed.
These
preliminary
results
demonstrate
response
patterns
across
array.
In
particular,
made
polyvinyl
acetate
exhibits
high
sensitivity
both
VOCs.
