ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(2), С. 2164 - 2175
Опубликована: Янв. 10, 2024
Wearable
piezoresistive
sensors
have
aroused
considerable
attention
for
their
huge
potential
in
emerging
applications
such
as
healthcare
monitoring
and
intelligent
electronics.
However,
the
fabrication
of
that
combine
excellent
sensing
performance
with
outstanding
working
reliability
watery
environments
still
remains
challenging.
Herein,
a
superhydrophobic
polyurethane
(PU)
sponge
was
proposed
sensor
through
synthesis
d-asparagine-modified
MXene
nanosheets
(MXene-NH2)
coating
conductive
cross-linkable
layer
constructed
by
dihydroxyl-terminated
poly(dimethylsiloxane)
(PDMS(OH))
MXene-NH2
nanosheets.
The
microscale
skeleton
nanoscale
PDMS-MXene
nanosheet
wrinkles
formed
hierarchically
rough
structure
support
superhydrophobicity
water
contact
angle
160°.
Benefiting
from
chemically
network
strong
adhesion
coating,
obtained
PDMS-MXene@PU
exhibited
robust
repellency
angles
(WCAs)
larger
than
150°
after
enduring
chemical
physical
damages.
Owing
to
synergistic
effect
production
microcrack
junctions
separation
between
backbones,
successfully
applied
full-scale
human
motions
(e.g.,
blowing,
facial
expression,
finger
knee
bending,
etc.)
performances
gauge
factor
reaching
−1.9.
findings
conceivably
stand
out
methodology
fabricate
desirable
property
innovative
broad
even
under
special
conditions.
Journal of Material Science and Technology,
Год журнала:
2023,
Номер
186, С. 244 - 255
Опубликована: Дек. 17, 2023
SA508Gr.4N
steel
is
commonly
used
in
nuclear
pressure
vessels.
The
current
study
discloses
the
impact
of
austenitizing
temperature
on
its
martensitic
transformation.
Various
temperatures
were
employed
to
examine
transformation
at
different
experimental
conditions.
characteristics
grain
boundaries,
microstructure,
kinetics,
and
crystallography
phase
following
process
analyzed.
Austenitizing
had
minimal
effects
critical
transition.
However,
an
increase
resulted
larger
sizes.
composition
primarily
consisted
lath
martensite,
accompanied
by
a
small
amount
residual
austenite
(RA).
As
increased,
martensite-start
(Ms)
initially
decreased
then
increased.
On
other
hand,
martensite-finish
(Mf)
showed
no
significant
sensitivity
changes
temperature.
Moreover,
average
size
martensite
structure
was
there
increased
tendency
for
variant
selection
as
combination
specific
orientation
relationships
appeared.
This
very
valuable
revealing
microstructure
evolution
temperatures.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(2), С. 2164 - 2175
Опубликована: Янв. 10, 2024
Wearable
piezoresistive
sensors
have
aroused
considerable
attention
for
their
huge
potential
in
emerging
applications
such
as
healthcare
monitoring
and
intelligent
electronics.
However,
the
fabrication
of
that
combine
excellent
sensing
performance
with
outstanding
working
reliability
watery
environments
still
remains
challenging.
Herein,
a
superhydrophobic
polyurethane
(PU)
sponge
was
proposed
sensor
through
synthesis
d-asparagine-modified
MXene
nanosheets
(MXene-NH2)
coating
conductive
cross-linkable
layer
constructed
by
dihydroxyl-terminated
poly(dimethylsiloxane)
(PDMS(OH))
MXene-NH2
nanosheets.
The
microscale
skeleton
nanoscale
PDMS-MXene
nanosheet
wrinkles
formed
hierarchically
rough
structure
support
superhydrophobicity
water
contact
angle
160°.
Benefiting
from
chemically
network
strong
adhesion
coating,
obtained
PDMS-MXene@PU
exhibited
robust
repellency
angles
(WCAs)
larger
than
150°
after
enduring
chemical
physical
damages.
Owing
to
synergistic
effect
production
microcrack
junctions
separation
between
backbones,
successfully
applied
full-scale
human
motions
(e.g.,
blowing,
facial
expression,
finger
knee
bending,
etc.)
performances
gauge
factor
reaching
−1.9.
findings
conceivably
stand
out
methodology
fabricate
desirable
property
innovative
broad
even
under
special
conditions.
