Wireless acoustic energy harvesting through an air-water metasurface with dual coupling resonators
Physical Review Applied,
Год журнала:
2024,
Номер
22(2)
Опубликована: Авг. 8, 2024
Extremely
large
acoustic
impedance
mismatching
generates
a
natural
barrier
at
the
air-water
interface,
resulting
in
significantly
impeding
bidirectional
wave
propagation
across
heterogeneous
interface.
Here,
an
metasurface
with
dual
coupling
resonators
is
proposed
to
enhance
transmission
which
facilitates
implementation
of
wireless
harvesting
for
energy
A
theoretical
model
established
and
derived
obtain
analytical
expressions
between
microstructural
geometric
parameters.
The
analysis
reveals
that
highly
efficient
mechanism
depends
on
effect
resonant
cavities
nonresonance
modes.
enhanced
interface
investigated
verified
numerically
experimentally,
maximum
enhancement
measured
be
approximately
19
dB
peak
frequency.
Finally,
implemented
experimentally
by
integrating
designed
contact-separation-mode
triboelectric
nanogenerator,
captured
from
waves
effectively
operates
six
LED
lamps.
``bottom-up''
design
methodology
based
acoustic-metasurface-embedded
system
opens
promising
routes
underwater
energy-supplying
platforms
medical
ultrasound
therapy.
Язык: Английский
Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring
Communications Engineering,
Год журнала:
2025,
Номер
4(1)
Опубликована: Фев. 1, 2025
Acoustic
impedance
enables
many
interesting
acoustic
applications.
However,
for
gas
sensing
is
rare
and
difficult.
Here
we
introduce
a
micro-nano
surface
wave
(SAW)
chip
based
on
the
effect
to
achieve
ultra-fast
wide-range
sensing.
We
theoretically
established
relationship
between
load
SAW
attenuation,
analyzed
influence
of
propagation
loss
under
different
gas/humidity
media.
Experimental
measurements
reveal
that
differences
in
generated
by
gases
trigger
can
(0-100
v/v%)
monitoring,
with
response
recovery
speeds
reaching
sub-second
levels
(t90
<
1
s,
t10
0.5
s)
detection
limit
~1
v/v%.
This
capability
also
be
perfectly
utilized
human
respiratory
accurately
reflecting
status,
frequency,
intensity.
Consequently,
provides
new
solution
in-situ
leaks
precise
monitoring
respiration.
Язык: Английский
Total acoustic transmission between fluids using a solid material with emphasis on the air–water interface
Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences,
Год журнала:
2025,
Номер
481(2307)
Опубликована: Фев. 1, 2025
Total
acoustic
transmission
between
water
and
air
is
modelled
using
a
purely
solid
interface
comprising
two
elastic
plates
separated
by
periodically
spaced
ribs.
The
frequency
of
full
depends
only
on,
inversely
proportional
to,
the
areal
density
plate
facing
air.
total
also
requires
specific
dependence
rib
spacing
on
bending
stiffness
plates.
These
relations
are
result
an
explicit
analytical
solution
for
transmitted
reflected
waves
combined
with
asymptotic
approximations
based
small
parameter
defined
air-to-water
impedance
ratio.
Surprisingly,
effect
almost
independent
angle
incidence,
even
though
conditions
predicated
normal
incidence.
Parametric
studies
performed
to
examine
bandwidth
Q-factor
transmissivity.
A
lower
bound
30.6
simply
related
water–air
Язык: Английский
Low-Frequency Sound Absorption in Air Pipelines and Water-Filled Pipelines Based on Metamaterials
Applied Sciences,
Год журнала:
2025,
Номер
15(7), С. 3820 - 3820
Опубликована: Март 31, 2025
Due
to
the
significant
impedance
mismatch
between
water
and
air,
two
types
of
pipeline
silencers
designed
for
same
target
frequency
with
different
filling
materials
often
have
significantly
thickness.
This
increases
difficulty
in
designing
multiple
pipelines
narrow
spaces.
The
paper
reports
a
metamaterial
design
paradigm
based
on
Helmholtz
cavity
low-frequency
sound
absorption
both
air
water-filled
pipelines.
An
asymmetric
coupled
resonators
is
proposed
reduce
impact
noise
By
coupling
mode
reflection
mode,
thickness
71
mm
achieves
95.6%
at
403
Hz.
tunable
absorbing
performance
broadband
confirmed
by
finite
element
simulation.
Additionally,
composite
constructed
HRs
associated
rubber
layer
average
absorptance
above
0.8
achieved
over
range
380–508
Hz
four
basic
units
31.5
mm.
can
complexity
because
muffler
should
similar
paradigm.
Язык: Английский
A broadband solid impedance transformer for acoustic transmission between water and air
Journal of Sound and Vibration,
Год журнала:
2025,
Номер
unknown, С. 119120 - 119120
Опубликована: Апрель 1, 2025
Язык: Английский
Broadband sound penetration enhancement on water-air interface by metalens
Thin-Walled Structures,
Год журнала:
2025,
Номер
unknown, С. 113450 - 113450
Опубликована: Май 1, 2025
Язык: Английский
Transmedia transmission enhancement based on transformation acoustics
Physical review. B./Physical review. B,
Год журнала:
2024,
Номер
110(21)
Опубликована: Дек. 2, 2024
Transmission
enhancement
of
sound
waves
across
the
interface
between
media
with
different
impedances
is
a
classical
problem
in
acoustic
communication,
for
instance
case
water-air
interface.
Different
strategies,
including
bubble-embedded
metasurfaces
or
impedance-matched
metamaterials,
have
been
developed
to
render
transparent.
Transmedia
wave
up
now
either
broadband
incorporating
customized
wavefront
manipulation.
In
this
paper,
we
explore
use
transformation
acoustics
and
gauge
realize
both
goals
simultaneously.
Transformation
first
argued
provide
lossless
transmedia
enhancement,
although
at
expense
adapting
cross
section
respect
power-flow
conservation.
It
specifically
proven
that
gradient
anisotropic
metamaterial
provides
perfect
transmission
two
dimensions
steering
allowed
as
well.
Gauge
theory
then
adapted
from
elasticity
one-dimensional
via
Willis-like
metamaterial.
Finally,
transformations
are
combined
together
implement
focusing
The
lens
designed
by
proposed
method
achromatic.
This
paper
expected
alternative
solutions
communication.
Язык: Английский
Surface acoustic wave sensing chip based on acoustic impedance effect: a method for rapid gas leakage detection and respiratory monitoring
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Май 9, 2024
Abstract
The
transformation
of
acoustic
impedance
(AI)
in
different
media
regulates
the
transmission
and
reflection
characteristics
waves
between
media,
thus
enabling
many
interesting
applications.
Here
we
introduce
for
first
time
a
surface
wave
(SAW)
chip
based
on
AI
effect,
which
utilizes
its
piezoelectric
effect
unique
interdigital
transducer
to
excite
mechanical
propagating
along
crystal,
it
features
high
sensitivity
surface-loaded
such
as
gases
humidity
changes
due
SAW
energy
being
localized
surface.
On
this
basis,
theoretically
established
relationship
load
propagation
loss,
analyzed
influence
loss
under
gas/humidity
using
mass
conservation
ideal
gas
state
equations.
Experimental
measurements
chips
reveal
that
differences
generated
by
trigger
signals,
can
achieve
wide-range
(1-100
v/v%)
monitoring,
with
fast
response
recovery
speeds
reaching
sub-second
levels
(t
90<1
s,
t
10<0.5
s).
This
capability
also
be
perfectly
utilized
human
respiratory
accurately
reflecting
status,
frequency,
intensity.
Therefore,
sensing
method
proposed
work
provide
new
solution
in-situ
detection
leaks
precise
monitoring
respiration.
Язык: Английский
Linear Modulation of the Resonant Frequency of a Double-bubble Model Below an Air-Water Interface
2021 OES China Ocean Acoustics (COA),
Год журнала:
2024,
Номер
unknown, С. 1 - 4
Опубликована: Май 29, 2024
Язык: Английский
Wireless Acoustic Energy Harvesting Through Air-Water Metasurface With Dual Coupling Resonators
Опубликована: Янв. 1, 2023
Extremely
large
acoustic
impedance
mismatching
generates
a
natural
barrier
at
air-water
interface,
resulting
in
mightily
impeding
bi-directional
wave
propagation
across
the
heterogeneous
interface.
Here,
an
metasurface
with
dual
coupling
resonators
is
proposed
to
enhance
transmission
which
facilitates
implementation
of
wireless
harvesting
for
energy
A
theoretical
model
established
and
derived
obtain
analytical
expressions
between
microstructural
geometric
parameters.
The
analysis
reveals
that
high-efficient
mechanism
depends
on
effect
resonant
cavities.
enhanced
bidirectional
interface
investigated
verified
numerically
experimentally,
measured
maximum
enhancement
approximately
19
dB
peak
frequency.
Finally,
implemented
experimentally
by
integrating
designed
contact-separation-mode
triboelectric
nanogenerator,
waves
captured
effectively
light
up
6
LED
lamps
about
0.1
W.
design
methodology
based
passive
metasurfaces
can
open
promising
routes
underwater
energy-supplying
platforms
medical
ultrasound
therapy.
Язык: Английский