Abstract
Biological
neural
systems,
composed
of
neurons
and
synaptic
networks,
exhibit
exceptional
capabilities
in
signal
transmission,
processing,
integration.
Inspired
by
the
mechanisms
these
researchers
have
been
dedicated
to
developing
artificial
systems
based
on
flexible
devices
that
effectively
mimic
functions
biological
synapses,
providing
hardware
support
for
advancement
intelligence.
In
recent
years,
ionic
gels,
known
their
high
conductivity
intuitive
mimicry,
utilized
development
ionic‐gel
synapses
(IGSs).
They
are
considered
ideal
materials
next
wearable
generation
neuromorphic
systems.
This
review
introduces
IGS
summarizes
progress
IGS‐based
Additionally,
key
challenges
future
prospects
related
IGSs
outlined,
potential
suggestions
provided.
npj 2D Materials and Applications,
Год журнала:
2024,
Номер
8(1)
Опубликована: Дек. 21, 2024
The
scalability
of
two-dimensional
(2D)
materials
down
to
a
single
monolayer
offers
exciting
prospects
for
high-speed,
energy-efficient,
scalable
memristors.
This
review
highlights
the
development
2D
material-based
memristors
and
potential
applications
beyond
memory,
including
neuromorphic,
in-memory,
in-sensor,
complex
computing.
also
encompasses
challenges
future
opportunities
advancing
these
technologies,
underscoring
transformative
impact
on
versatile
sustainable
electronic
devices
systems.
Nanoscale Horizons,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Te
doping
facilitates
the
formation
of
Se
vacancies
in
wafer-scale
MoSe
2
,
thereby
enabling
memory
functions
for
optoelectronic
synapses
via
trapping
photocarriers.
Abstract
Metal‐oxide
semiconductor‐based
optoelectronic
synaptic
transistors
have
attracted
considerable
attention
due
to
their
high
energy
efficiency
and
stability.
This
work
proposes
a
novel
WO
3
/InWZnO
heterojunction
transistor,
demonstrating
the
strong
potential
for
emulating
human
visual
system.
The
fabricated
transistor
achieves
an
impressive
optical
responsivity
of
58.37
A
W
−1
when
exposed
650
nm
light.
Furthermore,
it
successfully
emulates
transitions
from
short‐term
memory
(STM)
long‐term
(LTM)
by
modulating
pulse
duration,
illumination
intensity,
number.
also
exhibits
optimal
paired‐pulse
facilitation
(PPF)
index
176%
post‐tetanic
potentiation
(PTP)
890%
under
460
light
illumination.
It
demonstrates
multilevel
storage
capability
via
photogating
effect.
multilayer
perceptron
(MLP)
model,
employing
weights
modulated
650,
525,
in
(LTP)
region
electrical
stimuli
depression
(LTD)
region,
recognition
accuracy
87.4%
severely
distorted
handwritten
digits.
Finally,
U‐Net
architecture
is
adopted
evaluate
image
segmentation
performance
through
RGB
channels,
revealing
74.5%,
feasibility
proposed
advanced
neuromorphic
vision
system
applications.
Materials,
Год журнала:
2025,
Номер
18(10), С. 2293 - 2293
Опубликована: Май 15, 2025
This
study
presents
the
fabrication
and
characterization
of
ZnO–CNT
composite-based
optoelectronic
synaptic
devices
via
a
sol–gel
process.
By
incorporating
various
concentrations
CNTs
(0–2.0
wt%)
into
ZnO
thin
films,
we
investigated
their
effects
on
behaviors
under
ultraviolet
(UV)
stimulation.
The
CNT
addition
enhanced
electrical
optical
performance
by
forming
p–n
heterojunction
with
ZnO,
which
promoted
charge
separation
suppressed
recombination.
As
result,
1.5
wt%
device
exhibited
highest
excitatory
postsynaptic
current
(EPSC),
improved
paired-pulse
facilitation,
prolonged
memory
retention.
Learning–forgetting
cycles
revealed
that
repeated
stimulation
reduced
number
pulses
required
for
relearning
while
extending
forgetting
time,
mimicking
biological
reinforcement.
Energy
consumption
per
pulse
was
estimated
at
16.34
nJ,
suggesting
potential
low-power
neuromorphic
applications.
A
3
×
array
also
employed
visual
simulation,
showing
spatially
controllable
stable
states
depending
content.
To
support
these
findings,
structural
analyses
were
conducted
using
scanning
electron
microscopy
(SEM),
UV-visible
absorption
spectroscopy,
photoluminescence
(PL)
Raman
spectroscopy.
These
findings
demonstrate
characteristics
ZnO-based
can
be
finely
tuned
through
incorporation,
providing
promising
pathway
development
energy-efficient
adaptive
systems.
Nanomaterials,
Год журнала:
2024,
Номер
14(21), С. 1724 - 1724
Опубликована: Окт. 29, 2024
Two-dimensional
(2D)
semiconductor
components
have
excellent
physical
attributes,
such
as
mechanical
ductility,
high
mobility,
low
dielectric
constant,
and
tunable
bandgap,
which
attracted
much
attention
to
the
fields
of
flexible
devices,
optoelectronic
conversion,
microelectronic
devices.
Additionally,
one-dimensional
(1D)
materials
with
unique
surface
area
potency,
show
great
potential
in
many
applications.
However,
isolated
1D
2D
often
do
not
meet
demand
for
multifunctionality.
Therefore,
more
functionality
is
achieved
by
reconstructing
new
composite
structures
from
materials,
according
current
study,
it
has
been
demonstrated
that
hybrid
dimensional
integration
yields
a
significant
enhancement
performance
functionality,
widely
promising
field
constructing
novel
electronic
nanodevices.
In
this
review,
we
first
briefly
introduce
preparation
methods
1D/2D
heterostructures,
well
their
advantages
limitations.
The
applications
heterostructures
photodetectors,
gas
sensors,
pressure
strain
photoelectrical
synapses
biosensors
are
then
discussed,
along
opportunities
challenges
Finally,
outlook
emerging
heterojunction
given.
