Journal of the American Ceramic Society,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
ABSTRACT
Recent
advances
in
inorganic
negative
thermal
expansion
(NTE)
materials
have
highlighted
their
potential
for
multifunctional
applications,
yet
challenges
remain
optimizing
luminescent
properties
practical
use.
Based
on
Y
2
W
3
O
12
:Tb
3+
/Eu
NTE
ceramics,
we
present
a
thermally
regulated
optical
encoding
and
encryption
approach.
Under
254
nm
UV
excitation,
the
distinctive
high‐temperature
enhancement
effect
of
red
emission
quenching
phenomenon
green
were
discovered
these
enabling
an
effective
temperature‐controlled
color
change
phenomenon.
Optical
information
readout
realized
through
synergistic
modulation
light
heat,
decoding
process
multivariate
codes
alphabets
at
high
temperatures
was
accomplished.
The
accomplished
by
modulating
Tb
doping
concentration
ratio
regulating
ceramics
over
wide
range.
Furthermore,
ceramic
demonstrates
temperature
range
363‒603
K
sensing
effect.
This
offers
research
idea
achieving
coding
sensing.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(32)
Published: June 12, 2024
Abstract
Thermo‐responsive
smart
materials
have
aroused
extensive
interest
due
to
the
particular
significance
of
temperature
sensing.
Although
various
photoluminescent
are
explored
in
thermal
detection,
it
is
not
applicable
enough
X‐ray
radiation
environment
where
accuracy
and
reliability
will
be
influenced.
Here,
a
strategy
proposed
by
introducing
concept
radio‐luminescent
functional
building
units
(RBUs)
construct
thermo‐responsive
lanthanide
metal‐organic
frameworks
(Ln‐MOFs)
scintillators
for
self‐calibrating
thermometry.
The
rational
designs
RBUs
(including
organic
ligand
Tb
3+
/Eu
)
with
appropriate
energy
levels
lead
high‐performance
radio‐luminescence.
Ln‐MOFs
exhibit
perfect
linear
response
X‐ray,
presenting
low
dose
rate
detection
limit
(min
≈156.1
nGy
air
s
‐1
).
Self‐calibrating
based
on
ratiometric
XEL
intensities
achieved
good
absolute
relative
sensitivities
6.74
8.1%K
,
respectively.
High
light
yield
(max
≈39000
photons
MeV
−1
),
imaging
spatial
resolution
≈18
lp
mm
irradiation
stability
(intensity
≈100%
at
368
K
total
up
215
Gy
giant
color
transformation
visualization
benefit
applications,
especially
situ
imaging.
Such
provides
promising
way
develop
novel
photonic
excellent
scintillator
performances.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(18)
Published: Jan. 25, 2024
Abstract
Organic
phosphorescent
scintillating
materials
have
shown
great
potential
for
applications
in
radiography
and
radiation
detection
due
to
their
efficient
utilization
of
excitons.
However,
revealing
the
relationship
between
molecule
stacking
radioluminescence
scintillators
is
still
challenging.
This
study
reports
on
two
phenothiazine
derivatives
with
polymorphism‐dependent
phosphorescence
radioluminescence.
The
experiments
reveal
that
significantly
affects
non‐radiation
decay
triplet
excitons
scintillators,
which
further
determines
scintillation
performance
under
X‐ray
irradiation.
These
exhibit
high
radio
stability
a
low
limit
278
nGys
−1
.
Additionally,
application
these
radiography,
based
excited
properties,
demonstrated.
findings
provide
guideline
obtaining
high‐performance
by
shedding
light
effect
crystal
packing
organic
molecules.
ACS Materials Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 820 - 828
Published: Jan. 31, 2025
Noninvasive
optical
imaging
techniques,
including
X-ray
and
near-infrared
(NIR),
hold
significant
value
for
scientific
research
industrial
applications.
However,
there
is
still
a
lack
of
convenient
platform
that
integrates
NIR
in
both
bright-
dark-field
Here,
rare-earth
ion-doped
LaNbO4:Pr,Er
photochromic
luminescent
material
developed,
integrating
X-ray-induced
coloration,
NIR-induced
bleaching,
photoluminescence,
luminescence
modulation.
Under
alternating
light
irradiation,
the
reflectivity
intensity
can
be
reversibly
tuned
to
display
four
states:
white,
black,
dark,
bright.
By
utilizing
switchable
states,
quad-mode
bright
dark
fields
achieved.
photobleaching
imaging,
when
employed
as
adjuncts
has
potential
significantly
reduce
radiation-induced
damage
biological
tissues.
These
results
provide
unique
insights
designing
advanced
materials
photonic
storage
technologies
toward
multiwavelength,
multienvironment,
multimode
noninvasive
imaging.
Abstract
Scintillators
exhibiting
both
excellent
spatial
resolution
and
thermal
stability
are
highly
sought
after.
Herein,
by
employing
a
suite
of
techniques—including
phase‐separation‐assisted
crystallization,
energy
transfer,
compensation—Tb
3+
‐doped
nano‐glass
composite
(nano‐GC)
scintillators
developed
with
good
scintillation
performance.
The
Tb
nano‐GC
scintillator
exhibits
an
unprecedented
enhancement
in
the
integrated
intensity
X‐ray
excited
luminescence
(XEL)
more
than
five
times,
as
compared
Bi
4
Ge
3
O
12
(BGO)
crystal.
It
achieves
estimated
light
yield
54
900
photons
MeV
−1
sensitivity
635.31
nGy
air
s
.
An
imaging
system
based
on
delivers
record
28.7
lp
mm
at
room
temperature
28.1
even
500
°C,
thanks
to
stability,
namely,
preserves
original
XEL
up
300
≈73%
°C.
heat
resistance
excels
currently
available
high‐temperature
materials.
These
attributes,
combined
robust
moisture
resistance,
position
exceptionally
promising
candidate
for
used
harsh
environments.
