ACS Nano,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Few-layer
violet
phosphorus
(VP)
shows
excellent
potential
in
optoelectronic
applications
due
to
its
unique
in-plane
anisotropy
and
high
mobility.
However,
the
poor
air
stability
of
VP
severely
limits
practical
applications.
This
article
reports
highly
air-stable
obtained
by
a
two-step
nitrogen
plasma
treatment
where
volume
flow
rate
is
controlled
coordinate
physical
etching
chemical
doping.
Specially,
this
process
can
remove
partial
oxidations
formed
on
surface
with
barely
intrinsic
but
efficiently
incorporates
into
VP,
resulting
nitrogen-doped
(N-VP)
nanosheets
atomically
smooth
surfaces
that
exhibit
stability.
Atomic
force
microscopy
images
show
N-VP
nanosheet,
nearing
monolayer
thickness,
maintained
morphology
flatness
unchanged
ambient
for
over
60
days.
The
improved
be
partly
surface,
which
reduces
number
active
or
oxidation
sites.
Further
elucidation
was
made
density
functional
theory
calculations,
showing
ultrastability
may
intrinsically
attributed
repairing
P
vacancies
N
dopants.
research
provides
feasible
strategy
significantly
enhancing
durability
VP.
Materials,
Journal Year:
2023,
Volume and Issue:
16(23), P. 7372 - 7372
Published: Nov. 27, 2023
By
virtue
of
the
widely
tunable
band
structure,
dangling-bond-free
surface,
gate
electrostatic
controllability,
excellent
flexibility,
and
high
light
transmittance,
2D
layered
materials
have
shown
indisputable
application
prospects
in
field
optoelectronic
sensing.
However,
commonly
suffer
from
weak
absorption,
limited
carrier
lifetime,
pronounced
interfacial
effects,
which
led
to
necessity
for
further
improvement
performance
material
photodetectors
make
them
fully
competent
numerous
requirements
practical
applications.
In
recent
years,
researchers
explored
multifarious
methods
a
variety
perspectives.
To
promote
development
innovation
photodetectors,
this
review
epitomizes
latest
research
progress
improving
including
crystalline
quality,
engineering,
interface
passivation,
harvesting
enhancement,
channel
depletion,
shrinkage,
selective
trapping,
with
focus
on
their
underlying
working
mechanisms.
end,
ongoing
challenges
burgeoning
are
underscored,
potential
strategies
addressing
been
proposed.
On
whole,
sheds
upcoming
future.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(12), P. 14684 - 14694
Published: June 11, 2024
Memristors
hold
significant
promise
in
data
storage
and
synaptic
performance
bionics.
This
work
presents
a
memory
structure
based
on
silk
fibroin
(SF),
demonstrating
remarkable
stability
(up
to
104
s)
capacitance
effect
(ON/OFF
ratio
of
103).
By
introducing
graphene
oxide
(GO)
increase
its
oxygen
vacancy
concentration
weaken
effect,
the
SF:GO
memristor
has
103
ON/OFF
ratio.
Utilizing
inherent
similarity
between
memristors
structures,
we
simulate
long-term
plasticity
paired-pulse
facilitation
behavior
by
applying
electrical
pulses.
Moreover,
introduce
light
pulses
using
365
nm
ultraviolet
light,
revealing
that
device
exhibits
response
stimuli.
Finally,
Pavlov
conditioned
reflex
was
performed
discovery
holds
potential
for
future
studies
exploring
field
biology.
The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(35), P. 14742 - 14749
Published: Aug. 21, 2024
The
exfoliation
of
violet
phosphorus
into
phosphorene
nanosheets
(VPNS)
is
crucial
for
various
applications.
Large
quantities
VPNS
are
typically
prepared
through
solution
exfoliation,
but
prolonged
sonication
often
introduces
extra
functional
groups,
influencing
their
pristine
properties.
Herein,
gas
intercalation
with
thermal-cold
cycles
has
been
introduced
to
enhance
and
minimize
functionalization.
on
the
cycle
was
found
be
enhanced
by
about
50%
helium
intercalation.
Excellent
yield
achieved
thermal
(60
°C)-cold
treatment
in
a
atmosphere.
Less
functionalized
or
oxidized
larger
lateral
size
(4–7
μm)
were
obtained
compared
those
from
traditional
liquid
exfoliation.
optical
band
gap
exfoliated
cycling
measured
transmission
spectroscopy
2.15
eV,
similar
that
mechanically
ones
slightly
smaller
than
(2.16
eV)
sonication.
assistance
consistent
theoretical
prediction
density
theory,
where
penetration
barrier
He
(pore:
0.54
eV;
interlayer:
0.14
calculated
much
lower
Ar
1.77
10
eV).
ACS Applied Electronic Materials,
Journal Year:
2024,
Volume and Issue:
6(11), P. 7883 - 7889
Published: Oct. 17, 2024
We
have
grown
ultrathin
Bi2S3
with
a
layered
structure
and
single
crystallinity.
The
two-dimensional
crystals
were
synthesized
by
using
chemical
vapor
deposition
(CVD)
technique,
resulting
in
thickness
of
approximately
down
to
9
nm
lateral
dimensions
exceeding
several
tens
micrometers.
Phototransistors
based
on
this
exhibit
superior
photoelectric
properties
due
strong
Coulomb
interactions.
Specifically,
the
device
demonstrates
high
photoresponsivity
2.35
×
105
A/W,
detectivity
7.5
1014
Jones,
rapid
response
time
60
ms.
also
feature
tunable
direct
bandgap
ranging
from
1.3
1.9
eV,
which
enables
generation
substantial
photocurrent
its
quantum
efficiency.
Furthermore,
material's
single-crystalline,
anisotropic
structure,
combined
low
effective
electron
mass,
contributes
charge
mobility
enhanced
photoresponsivity.
CVD-grown
phototransistors
are
therefore
promising
candidates
for
various
applications,
including
next-generation
photodetectors,
optical
fibers,
image
sensors,
owing
their
inherent
flexibility
structural
anisotropy.
There
is
an
urgent
requirement
for
the
incorporation
of
biomimetic
afferent
nervous
sensing
elements
in
rapidly
growing
field
neuromorphic
chips
and
artificial
intelligent
robots.
It
imperative
to
ensure
reliable
response
element
actual
signals
such
as
heat
or
pressure,
rather
than
relying
on
conventional
electrical
stimuli.
In
this
study,
we
present
NiAl-LDHs
synaptic
thin-film
transistor
by
integrating
piezoelectric
properties
with
temperature
response.
capable
effectively
producing
a
pressure
behaviors,
while
also
simulating
finite
analysis.
addition,
proposed
device
employed
simulate
intriguing
phenomenon
referred
"operant
conditioned
response"
through
implementation
"trial
error
learning"
method.
The
transitions
from
short-term
memory
long-term
occurs
during
two
stages
operant
conditioning
reflex
(training
experiencing).
brief,
replicates
sensory
reactions
biological
components.
This
showcases
its
exceptional
capacity
generate
neuro-impulses
upon
exposure
stimuli,
thereby
facilitating
attainment
objective-emulating
human-like
sensation.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Few-layer
violet
phosphorus
(VP)
shows
excellent
potential
in
optoelectronic
applications
due
to
its
unique
in-plane
anisotropy
and
high
mobility.
However,
the
poor
air
stability
of
VP
severely
limits
practical
applications.
This
article
reports
highly
air-stable
obtained
by
a
two-step
nitrogen
plasma
treatment
where
volume
flow
rate
is
controlled
coordinate
physical
etching
chemical
doping.
Specially,
this
process
can
remove
partial
oxidations
formed
on
surface
with
barely
intrinsic
but
efficiently
incorporates
into
VP,
resulting
nitrogen-doped
(N-VP)
nanosheets
atomically
smooth
surfaces
that
exhibit
stability.
Atomic
force
microscopy
images
show
N-VP
nanosheet,
nearing
monolayer
thickness,
maintained
morphology
flatness
unchanged
ambient
for
over
60
days.
The
improved
be
partly
surface,
which
reduces
number
active
or
oxidation
sites.
Further
elucidation
was
made
density
functional
theory
calculations,
showing
ultrastability
may
intrinsically
attributed
repairing
P
vacancies
N
dopants.
research
provides
feasible
strategy
significantly
enhancing
durability
VP.
