Physica Scripta,
Год журнала:
2024,
Номер
99(4), С. 045972 - 045972
Опубликована: Март 2, 2024
Abstract
Transition
metal
dichalcogenides
(TMDs)
have
excellent
optical
and
mechanical
properties
potential
application
value
in
wearable
optoelectronic
response
devices.
MoTe
2
,
a
representative
material
of
TMDs,
is
studied
by
first-principles
calculation
this
paper.
The
results
show
that
the
monolayer
has
direct
band
gap
1.110eV,
which
strong
light
absorption
capacity
can
produce
high
concentration
photogenerated
charge
carriers
after
absorption.
soft
exhibits
unique
layered
materials.
effects
biaxial
strain
defects
on
materials
were
analyzed.
compression
enhance
curve
material,
carrier,
expand
range
its
energy
distribution.
tensile
decreases
photon
distribution
carriers.
Mo
vacancy
defect
increases
low
region
broadens
material.
two
types
both
induce
‘discrete’
significantly
affects
elastic
modulus
anisotropy
resulting
changing
from
ductile
to
brittle.
When
added,
spatial
also
changes
greatly.
Therefore,
flexible
devices,
performance
be
controlled
strains
defects.
Nanophotonics,
Год журнала:
2025,
Номер
14(8), С. 1193 - 1202
Опубликована: Янв. 29, 2025
Abstract
Microdisk
lasers
have
emerged
as
compact
on-chip
optical
sensors
due
to
their
small
size,
simple
structure,
and
efficient
lasing
capabilities.
However,
conventional
microdisk
laser
face
challenges
in
enhancing
interactions
with
external
analytes,
energy
remains
predominantly
confined
within
the
material.
In
this
study,
we
present
a
novel
sensor
incorporating
periodic
meta-hole
patterning,
designed
enhance
interaction
while
maintaining
integrity
of
whispering
gallery
mode
(WGM).
Numerical
simulations
show
that
an
InGaAsP
(5
μm
diameter,
250
nm
thickness),
WGM
stable
meta-holes
(period
=
340
nm,
diameter
d
<
0.4
),
achieving
resonant
wavelength
near
1,500
nm.
The
inclusion
led
substantial
improvement
sensitivity,
reaching
up
100.8
nm/RIU
–
2.26-fold
increase
over
nonpatterned
microdisks.
Experimental
validation
confirmed
structures
/
ratio
0.32,
maximum
sensitivity
74.5
nm/RIU,
which
represents
2.02-fold
enhancement
compared
designs.
This
advancement
design
not
only
opens
new
possibilities
for
high-performance,
miniaturized
but
also
holds
significant
potential
integration
into
next-generation
sensing
technologies.
Chemosensors,
Год журнала:
2023,
Номер
11(7), С. 405 - 405
Опубликована: Июль 19, 2023
Quantum
dots
nanomaterials
have
attracted
extensive
interest
for
fluorescence
chemical
sensors
due
their
attributes,
such
as
excellent
optical
characteristics,
quantum
size
effects,
interface
etc.
Moreover,
the
properties
of
can
be
adjusted
by
changing
structure,
size,
morphology,
composition,
doping,
and
surface
modification.
In
recent
years,
been
considered
preferred
sensing
materials
detection
heavy
metal
ions
pesticide
residues
interactions
between
various
analytes,
showing
sensitivity,
selectivity,
interference,
well
reducing
cost
equipment
compared
with
traditional
measurement
methods.
this
review,
applications
mechanisms
semiconductor
carbon-based
are
comprehensively
discussed.
The
application
dots,
carbon
graphene
nanocomposites
that
utilized
discussed
in
detailed,
ion
residue
determination
also
presented.
advances
perspectives
regarding
composites
summarized.
Journal of Food and Drug Analysis,
Год журнала:
2022,
Номер
30(4), С. 494 - 522
Опубликована: Ноя. 23, 2022
Polycyclic
aromatic
hydrocarbons
(PAHs),
a
class
of
harmful
and
persistent
organic
contaminant,
are
widely
distributed
in
the
environment
eventually
accumulated
water
food.
Also,
they
formed
different
varieties
varying
amounts
during
processing
food
depending
on
composition,
cooking
method
condition.
According
to
International
Agency
for
Research
Cancer
(IARC),
various
PAHs
classified
under
Group
1
3
category,
with
designated
as
carcinogenic
humans,
2A
probable
carcinogen,
2B
possible
carcinogen
noncarcinogenic.
Therefore,
it
is
imperative
develop
rapid
highly
sensitive
analytical
methods
determination
water.
This
article
aims
overview
recent
advances
chromatographic
well
electrochemical
SERS-based
optical
sensing
analysis
Initially,
several
conventional
sample
preparation
along
advanced
extraction
isolation
were
summarized,
followed
by
reviewing
gas
coupled
detection
techniques
products
including
meat/meat
products,
seafood,
oil,
milk/milk
baby
foods,
honey,
vegetable,
cocoa
tea/coffee,
juice,
rice,
flour,
noodle
cake.
In
addition,
high
performance
liquid
fluorescence,
diode
array
or
mass/tandem
mass
an
emerging
supercritical
fluid
technique
employed
matrices
also
overviewed.
Finally,
sensors
developed
recently
onsite
tabulated
discussed.
Thus,
this
review
can
provide
research
update
chromatography
sensor-based
PAH
enable
elucidation
gaps
future
studies.
Stimuli-responsive
polymers
have
garnered
significant
attention
for
their
ability
to
adapt
environmental
changes,
offering
applications
in
sensing,
smart
coatings,
and
adaptive
devices.
However,
challenges
remain
developing
multifunctional
that
combine
dynamic
responsiveness
with
robust
mechanical
properties.
In
this
study,
we
design
synthesize
azobenzene-based
copolymers,
poly(thiourea
triethylene
glycol)-co-azobenzene
(PTUEG3-co-Azo)
through
a
controlled
polycondensation
process
address
these
limitations.
The
flexible
PTUEG3
backbone,
its
strong
hydrogen-bonding
networks,
is
combined
azobenzene
moieties
impart
thermal
isomerization,
acid-base
responsiveness,
enhanced
adhesion
performance.
groups
exhibited
thermally
induced
cis-to-trans
leading
structural
reorganization,
increased
molecular
packing,
elevated
glass
transition
temperatures
(Tg).
Additionally,
the
demonstrated
reversible
undergoing
distinct
repeatable
color
changes
upon
protonation
deprotonation.
By
balancing
flexibility
of
backbone
rigidity
groups,
PTUEG3-co-Azo
copolymers
achieved
performance
tunable
4
:
1
composition
superior
adhesive
strength,
attributed
synergistic
effects
hydrogen
bonding
azobenzene-induced
reorganization
under
activation.
These
results
present
as
versatile
material,
bridging
gap
between
robustness,
potential
adhesives,
functional
coatings.
