International Journal of Applied Mechanics,
Год журнала:
2024,
Номер
16(03)
Опубликована: Янв. 27, 2024
In
recent
years,
researchers
have
shown
interest
in
using
elastomers
with
high
dielectric
constant
and
good
elasticity
capacitive
MEMS.
This
paper
aims
to
investigate
how
the
performance
of
sensors/actuators
is
affected
by
temperature-dependent
behavior
gap-filling
Polydimethylsiloxane
(PDMS).
As
a
case
study,
model
created,
consisting
proof
mass
two
attached
flexible
microbeams
parallel
stationary
electrode,
under
electrostatic
actuation.
The
actuation
directly
proportional
constant.
To
reduce
resistance
stiffness,
bulk
PDMS
was
assumed
porosity,
resulting
nonlinear
displacement-dependent
Young’s
modulus.
system’s
static
dynamic
responses
were
obtained
solving
governing
equations
Galerkin-based
numerical
procedures.
Additionally,
physically
gradient-descent-based
learning
method
used
predict
frequency
response
system.
results
that
instead
an
air
gap
significantly
reduces
required
voltage,
although
this
difference
less
pronounced
at
higher
temperatures.
addition,
inclusion
alters
resonance
system
also
reducing
temperature
diminishes
softening
specific
bias
AC
voltages.
Theranostics,
Год журнала:
2023,
Номер
13(13), С. 4615 - 4635
Опубликована: Янв. 1, 2023
Uncontrolled
traumatic
bleeding
can
lead
to
death
due
excessive
blood
loss
within
minutes.Early
intervention
is
crucial
save
lives,
making
timely
and
effective
hemostasis
a
major
global
challenge.Injectable
hemostatic
materials
(IHMs)
have
been
proposed
improve
the
effectiveness
of
hemostasis,
facilitate
wound
healing,
enhance
survival
rates
in
emergency
situations.The
superior
performance
IHMs
has
garnered
significant
attention.However,
there
are
relatively
few
comprehensive
reviews
on
IHMs.This
paper
aims
provide
review
latest
research
progress
recent
years.Firstly,
physiological
process
underlying
principles
analyzed.Subsequently,
synthesis
strategies
for
different
discussed.The
requirements
then
summarized,
including
high
efficiency,
biocompatibility,
degradability,
manipulability,
stability
antibacterial
ability.Finally,
development
prospects
challenges
presented.This
serves
as
necessary
systematic
summary
IHMs,
providing
valuable
reference
new
high-performance
their
practical
clinical
applications.
Computer Methods in Applied Mechanics and Engineering,
Год журнала:
2024,
Номер
426, С. 116985 - 116985
Опубликована: Апрель 17, 2024
In
this
paper,
a
new
framework
for
large
strain
of
electro-active
viscoelastic
polymeric
beams
is
developed.
The
kinematical
quantities
beam
are
derived,
and
then
the
constitutive
equations
electromechanical
To
expand
formulation
to
regime,
generalization
quasi-linear
viscoelasticity
theory
electo-mechanical
deformation
developed
called
electro-mechanical
(EM-QLV)
theory.
deal
with
highly
nonlinear
formulation,
finite
element
in
Total
Lagrangian
derived.
Finally,
examine
applicability
proposed
model,
several
examples
presented
compared
results
literature.
Polymer Composites,
Год журнала:
2024,
Номер
45(8), С. 7661 - 7672
Опубликована: Март 4, 2024
Abstract
Thermally
conductive
polymeric
composites
with
low
dielectric
constant
are
highly
promising
for
the
packaging
materials
in
field
of
modern
communication.
Therefore,
synergistic
improvement
and
high
thermal
conductivity
has
become
a
current
research
hotspot.
In
this
work,
we
propose
one‐step
alkylation
boron
nitride
nanosheet
(BNNS)
ultrasonic
stratification
using
1‐hexanol,
then
hot
press
films
to
make
Alkyl‐BNNSs
orient
fluorinated
polyimide
(f‐PI).
The
resulting
Alkyl‐BNNS/f‐PI
composite
successfully
realizes
property
properties,
exhibiting
heat
coefficient
2.36
Wm
−1
K
filler
content
4.99
wt.%.
Moreover,
permittivity
loss
film
as
1.76
0.0065
at
1
MHz,
respectively.
This
work
provides
facile
strategy
breaking
bottleneck
making
simultaneously
conduction
performance.
Highlights
exhibits
heat‐conducting
.
Ultra‐low
was
achieved
by
modification
film.
Excellent
breakdown
resistance
flexibility
were
endowed
composites.
