Sustainable, biodegradable, flexible piezoelectric quaternary ammonium chitosan film pressure sensors for human motion detection and human-computer interaction
Sensors and Actuators A Physical,
Journal Year:
2025,
Volume and Issue:
unknown, P. 116549 - 116549
Published: April 1, 2025
Language: Английский
A poly(L-lactic Acid)-based flexible piezoelectric energy harvester with micro-zigzag structures
Yijie Liu,
No information about this author
Yi Xue,
No information about this author
Zifeng He
No information about this author
et al.
Smart Materials and Structures,
Journal Year:
2024,
Volume and Issue:
33(7), P. 075024 - 075024
Published: May 20, 2024
Abstract
Piezoelectric
energy
harvester
(PEH)
holds
great
potential
for
flexible
electronics
and
wearable
devices.
However,
the
power
conversion
efficiency
of
PEH
(fPEH)
has
often
been
a
limiting
factor,
especially
under
variable
excitation.
Herein,
we
propose
practical
solution:
poly(L-lactic
acid)-based
fPEH
with
3D-printed
micro-zigzag
structures.
This
design
not
only
broadens
operational
bandwidth
enhances
low-frequency
response
but
also
offers
tangible
improvement
in
fPEH.
The
structure
was
designed
fabricated
using
digital
light
processing
3D
printing
technique
acrylates,
method
that
is
readily
accessible
to
researchers
engineers
field.
Mechanical
properties
acrylic
elastomers
different
compositions
were
investigated
obtain
material
parameters,
then
sandwich
via
sputtering
packaging.
Subsequently,
numerical
simulation
conducted
on
structures
determine
sizes
oscillation
frequencies
Finally,
four
3-,
4-,
5-
6
mm
lengths
tested
51,
37,
22,
21
Hz
consistent
simulation.
output
voltages
are
11–30
mV
load
ranges
60–100
MΩ.
Stability
evaluation
showed
can
work
low
frequency
(<100
Hz)
broadband
conditions.
provided
new
insights
fPEH,
paving
way
more
efficient
harvesting
solutions
future.
Language: Английский
Influence of phonon anharmonicity on Raman spectra of Cu2ZnSn(S,Se)4 polycrystalline thin films through computational study
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 2, 2025
Cu2ZnSn(S,Se)4
(CZT(S,Se))
thin
films
exhibit
the
characteristics
necessary
to
be
effective
absorbers
in
solar
cells.
In
this
report,
room
temperature
experimental
Raman
scattering
spectra,
recorded
at
different
excitation
wavelengths,
are
systematically
analyzed
theoretically
using
results
of
DFT
harmonic
frequencies
calculations
Γ-point
for
various
modifications
kesterite
(KS),
stannite
(ST),
and
pre-mixed
Cu-Au
(PMCA)
crystal
structures.
The
specific
anharmonism‐induced
features
spectra
CZT(S,Se)
crystals
identified,
spectral
lineshapes
varied
strengths
anharmonic
interaction
simulated.
A
robust
agreement
between
spectrum
theoretical
is
demonstrated,
ensuring
reliability
estimating
parameters
related
effects.
Therefore,
our
findings
show
that
incorporating
anharmonism
as
an
additional
contribution
phonon
particularly
non-resonant
cases,
allows
a
more
accurate
description
vibrational
properties
CZT(S,Se).
This
could
play
crucial
role
distinguishing
phases
materials
open
new
possibilities
fabrication
cells
with
enhanced
characteristics.
Language: Английский
Flexible strain sensors based on silver nanowires and UV-curable acrylate elastomers for wrist movement monitoring
S.H. Li,
No information about this author
Wenjin Wu,
No information about this author
Yu Chang
No information about this author
et al.
RSC Applied Interfaces,
Journal Year:
2024,
Volume and Issue:
1(4), P. 684 - 688
Published: Jan. 1, 2024
This
article
uses
innovative
UV-curable
acrylate
elastomer
with
AgNWs
to
develop
flexible
strain
sensors
for
wrist
movement
monitoring.
Language: Английский
A polymer gel-gated flexible transistor based on chitosan physically cross-linked films for hydrogen sulfide gas sensing
Jianan Zhang,
No information about this author
Jian Yang,
No information about this author
Ruiliang Zhou
No information about this author
et al.
Sensors and Actuators A Physical,
Journal Year:
2025,
Volume and Issue:
unknown, P. 116593 - 116593
Published: April 1, 2025
Language: Английский
A room-temperature ammonia gas sensor based on the h-MoO3@Graphene composite film with fast response time
Yu Chang,
No information about this author
Jianan Zhang,
No information about this author
Ivan S. Babichuk
No information about this author
et al.
Materials Research Bulletin,
Journal Year:
2024,
Volume and Issue:
179, P. 112985 - 112985
Published: July 3, 2024
Language: Английский
Piezoelectric Biopolymers: Advancements in Energy Harvesting and Biomedical Applications
Menghan Xu,
No information about this author
Yongxian Wen,
No information about this author
Zhuqun Shi
No information about this author
et al.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3314 - 3314
Published: Nov. 27, 2024
Biodegradable
piezoelectric
polymers
have
emerged
as
a
hot
research
focus
in
bioelectronics,
energy-harvesting
systems,
and
biomedical
applications,
well
sustainable
future
development.
Biopolymers
possess
plenty
of
features
which
make
them
promising
candidates
for
next-generation
electronic
technologies,
including
biocompatibility,
degradability,
flexibility.
This
review
discusses
biopolymers,
focusing
on
the
relationship
between
coupling
mechanisms,
material
structures,
performance.
Processing
techniques
such
annealing,
mechanical
drawing,
poling
are
introduced
further
studied
terms
achieving
high
work
reviews
strategies
enhancing
properties
via
molecular
engineering,
nano
structuring,
incorporation
additives.
Furthermore,
applications
these
biopolymers
energy
harvesting
biomedicine
provided,
with
discussion
their
potential
degradable
bioelectronic
devices.
There
still
challenges
optimizing
performance
ensuring
stability.
Our
is
expected
to
provide
an
understanding
help
achieve
wider
application
biopolymers.
Language: Английский