Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(15)
Published: March 23, 2022
Abstract
Metal
halide
perovskite
scintillators
encounter
unprecedented
opportunities
in
indirect
ionizing
radiation
detection
due
to
their
high
quantum
yields.
However,
the
long
scintillation
lifetime
of
microseconds
upon
irradiation,
known
as
afterglow
phenomenon,
obviously
limits
fast
development.
Here,
a
new
type
hybrid
X‐ray
detector
wafer
combining
direct
methylamine
lead
iodide
(MAPbI
3
)
semiconductor
and
zero‐dimensional
cesium
copper
(Cs
Cu
2
I
5
scintillator
through
low‐cost
tableting
processes
is
reported.
Due
energy
transfer
from
Cs
MAPbI
,
device
response
time
X‐rays
dramatically
reduced
by
nearly
30
times
36.6
ns,
which
enables
capability
large
area
arrays
within
1
s.
Moreover,
exists
at
grain
boundaries
crystals,
blocks
paths
mobile
ions
perovskite,
leading
lowest
detectable
dose
rate
thus
1.5
compared
with
control
direct‐type
semiconductor,
10
indirect‐type
scintillator.
The
direct/indirect
also
exhibits
improved
operation
stability
ambient
conditions
without
any
encapsulation.
This
kind
detectors
provides
strong
competitiveness
advantages
both
semiconductors
for
next‐generation
products.
Polymers,
Journal Year:
2021,
Volume and Issue:
13(3), P. 341 - 341
Published: Jan. 21, 2021
Polymer
nanoparticles
and
nano/micromotors
are
novel
nanostructures
that
of
increased
interest
especially
in
the
diagnosis
therapy
cancer.
These
structures
modified
by
antibodies
or
nucleic
acid
aptamers
can
recognize
cancer
markers
at
membrane
cells
intracellular
side.
They
serve
as
a
cargo
for
targeted
transport
drugs
acids
chemo-
immuno-
gene
therapy.
The
various
mechanisms,
such
enzyme,
ultrasound,
magnetic,
electrical,
light,
served
driving
force
nano/micromotors,
allowing
their
into
cells.
This
review
is
focused
on
recent
achievements
development
polymer
aptamers.
methods
preparation
nanoparticles,
structure
properties
provided
together
with
those
synthesis
application
nano/micromotors.
mechanisms
chemical,
electric
magnetic
fields
explained.
targeting
drug
delivery
based
modification
receptors
antibodies.
Special
focus
therefore
method
selection
recognition
well
comparison
immobilization
provided.
Examples
applications
controlled
release
presented.
future
perspectives
biomimetic
personalized
nanomedicine
also
discussed.
Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(15)
Published: March 23, 2022
Abstract
Metal
halide
perovskite
scintillators
encounter
unprecedented
opportunities
in
indirect
ionizing
radiation
detection
due
to
their
high
quantum
yields.
However,
the
long
scintillation
lifetime
of
microseconds
upon
irradiation,
known
as
afterglow
phenomenon,
obviously
limits
fast
development.
Here,
a
new
type
hybrid
X‐ray
detector
wafer
combining
direct
methylamine
lead
iodide
(MAPbI
3
)
semiconductor
and
zero‐dimensional
cesium
copper
(Cs
Cu
2
I
5
scintillator
through
low‐cost
tableting
processes
is
reported.
Due
energy
transfer
from
Cs
MAPbI
,
device
response
time
X‐rays
dramatically
reduced
by
nearly
30
times
36.6
ns,
which
enables
capability
large
area
arrays
within
1
s.
Moreover,
exists
at
grain
boundaries
crystals,
blocks
paths
mobile
ions
perovskite,
leading
lowest
detectable
dose
rate
thus
1.5
compared
with
control
direct‐type
semiconductor,
10
indirect‐type
scintillator.
The
direct/indirect
also
exhibits
improved
operation
stability
ambient
conditions
without
any
encapsulation.
This
kind
detectors
provides
strong
competitiveness
advantages
both
semiconductors
for
next‐generation
products.
