Polymers,
Год журнала:
2023,
Номер
15(3), С. 545 - 545
Опубликована: Янв. 20, 2023
We
report
simulations
on
a
highly-sensitive
class
of
metasurface-based
nitrogen
dioxide
(NO2)
gas
sensors,
operating
in
the
telecom
C
band
around
1550
nm
line
and
exhibiting
strong
variations
terms
reflection
coefficient
after
assimilation
NO2
molecules.
The
unit
architecture
employs
polymer-based
(polyvinylidene
fluoride—PVDF
or
polyimide—PI)
motif
either
half-rings,
rods,
disks
having
selected
sizes
orientations,
deposited
gold
substrate.
On
top
this,
we
add
layer
hydrophyllic
polymer
(POEGMA)
functionalized
with
NO2-responsive
monomer
(PAPUEMA),
which
is
able
to
adsorb
water
molecules
only
presence
In
this
process,
POEGMA
raises
its
hidrophyllicity,
while
not
triggering
phase
change
bulk
material,
which,
turn,
modifies
electrical
properties.
Contrary
absorption-based
detection
signal-based
experience
considerable
limitations
humid
wet
environments,
our
method
stands
out
by
simple
exploitation
basic
material
properties
polymer.
results
show
that
NO2-triggered
molecule
adsorption
from
environments
can
be
used
conjunction
metasurface
order
provide
response
desired
spectral
window.
Additionally,
instead
measuring
absorption
spectrum
gas,
humidity
counts
as
parasitic
effect
due
overlap,
allows
tuning
wavelength
at
are
transparent,
scaling
geometry
thicknesses
layers
respond
wavelength.
All
these
advantages
make
proposed
sensor
an
extremely-viable
candidate
for
both
biological
atmospheric
gas-sensing
applications.
Abstract
Diabetic
ketoacidosis
(DKA)
is
a
life‐threatening
acute
complication
of
diabetes
characterized
by
the
accumulation
ketone
bodies
in
blood.
Breath
acetone,
ketone,
directly
correlates
with
blood
ketones.
Therefore,
monitoring
breath
acetone
can
significantly
enhance
safety
and
efficacy
care.
In
this
work,
design
fabrication
an
InP/Pt/chitosan
nanowire
array‐based
chemiresistive
sensor
reported.
By
incorporation
chitosan
as
surface‐functional
layer
Pt
Schottky
contact
for
efficient
charge
transfer
processes
photovoltaic
effect,
self‐powered,
highly
selective
sensing
achieved.
The
has
exhibited
ultra‐wide
detection
range
from
sub‐ppb
to
>100
000
ppm
level
at
room
temperature,
covering
those
exhaled
healthy
individuals
(300–800
ppb)
people
high
risk
DKA
(>75
ppm).
also
been
successfully
integrated
into
handheld
testing
prototype,
Ketowhistle,
which
detect
different
ranges
concentrations
simulated
samples.
Ketowhistle
demonstrates
immediate
potential
non‐invasive
living
diabetes,
particular
prevention.
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Ноя. 4, 2024
Abstract
Gas
sensor
is
an
indispensable
part
of
modern
society
with
wide
applications
in
environmental
monitoring,
healthcare,
food
industry,
public
safety,
etc.
With
the
development
technology,
wireless
communication,
smart
monitoring
terminal,
cloud
storage/computing
and
artificial
intelligence,
gas
sensors
represent
future
sensing
due
to
their
merits
real-time
multifunctional
early
warning
function,
intelligent
automated
feature.
Various
electronic
optoelectronic
have
been
developed
for
high-performance
analysis.
terminals
maturity
integrated
flexible
wearable
play
increasing
role
This
review
highlights
recent
advances
diverse
applications.
The
structural
components
fundamental
principles
are
described,
devices
highlighted.
Moreover,
array
intelligence
algorithms
“Internet
Things”
paradigm
introduced.
Finally,
challenges
perspectives
discussed
regarding
need
city
healthy
living.
ACS Sensors,
Год журнала:
2024,
Номер
9(4), С. 1916 - 1926
Опубликована: Март 19, 2024
Conductive
metal–organic
frameworks
(MOFs)
have
received
increasing
attention
in
recent
years
and
present
high
application
potential
as
sensing
elements
electronic
sensors.
In
this
study,
flexible
field-effect
transistor
(FET)
sensors
based
on
conductive
MOF,
i.e.,
Ni3(HHTP)2,
been
constructed.
This
Ni3(HHTP)2
sensor
has
sensitivity
(detection
limit
of
56
ppb)
well
superior
selectivity
for
NO2
detection
at
room
temperature,
which
is
demonstrated
by
accurate
gas
a
mixed
atmosphere.
Moreover,
employing
six
substrates,
polyimide
(PI),
tape
(PET),
facemask,
paper
cup,
tablecloth,
take-out
bag
(textile),
we
successfully
demonstrate
the
universality
construction
with
MOF
film
various
substrates.
study
MOF-based
offers
new
opportunity
wide
range
applications
wearable
portable
devices.
ACS Sensors,
Год журнала:
2024,
Номер
9(6), С. 2728 - 2776
Опубликована: Июнь 3, 2024
The
escalating
development
and
improvement
of
gas
sensing
ability
in
industrial
equipment,
or
"machine
olfactory",
propels
the
evolution
sensors
toward
enhanced
sensitivity,
selectivity,
stability,
power
efficiency,
cost-effectiveness,
longevity.
Two-dimensional
(2D)
materials,
distinguished
by
their
atomic-thin
profile,
expansive
specific
surface
area,
remarkable
mechanical
strength,
tunability,
hold
significant
potential
for
addressing
intricate
challenges
sensing.
However,
a
comprehensive
review
2D
materials-based
applications
is
absent.
This
delves
into
recent
advances
this
field
highlights
machine
olfaction.
main
content
encompasses
scenario
characteristics,
fundamental
classification,
enhancement
methods,
underlying
mechanisms,
diverse
applications.
Additionally,
associated
with
transitioning
material
from
laboratory
to
industrialization
commercialization
are
addressed,
future-looking
viewpoints
on
next-generation
intelligent
sensory
systems
sector
prospected.
npj Flexible Electronics,
Год журнала:
2024,
Номер
8(1)
Опубликована: Дек. 4, 2024
With
the
increasing
demand
for
wearable
electronic
products,
there
is
a
pressing
need
to
develop
devices
that
seamlessly
conform
contours
of
human
body
while
delivering
excellent
performance
and
reliability.
Traditional
rigid
fabrication
technologies
fall
short
meeting
these
requirements,
necessitating
exploration
advanced
flexible
offer
new
possibilities
designing
fabricating
stretchable
particularly
in
devices.
Over
time,
continuous
development
innovative
techniques
has
ushered
significant
improvements
design
freedom,
lightweight,
seamless
integration,
multifunctionality
electronics.
Here,
we
provide
comprehensive
overview
advancements
facilitated
by
technology
It
specifically
focuses
on
key
methods,
including
printed
electronics
fabrication,
soft
transfer,
3D
structure
deformation
fabrication.
By
highlighting
advancements,
it
sheds
light
challenges
prospects
further
technologies.
The
introduction
revolutionized
landscape
wearable/conformable
electronics,
expanding
their
application
domains,
streamlining
system
complexity
associated
with
customization,
manufacturing,
production,
opening
up
avenues
innovation
body-conformable
