ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 4, 2024
Wearable
thermoelectric
(TE)-based
temperature
sensors
capable
of
detecting
and
transmitting
data
from
the
human
body
environment
show
promise
in
intelligent
medical
systems,
human-machine
interfaces,
electronic
skins.
However,
it
has
remained
a
challenge
to
fabricate
flexible
with
superior
sensing
performance,
primarily
due
low
Seebeck
coefficient
TE
materials.
Here,
we
report
an
inorganic
amorphous
material,
Ge
Global
agricultural
productivity
is
affected
by
plant
stresses
every
year;
as
a
consequence,
monitoring
and
preventing
significant
measure
to
protect
the
agro-ecological
environment.
Similar
adoption
of
wearable
devices
appraise
human
physiological
information
disease
diagnosis,
however,
in
situ
nondestructive
complex
weak
plants
an
enormous
challenge
for
development
sensors.
Herein,
accurately
analyze
changes
tomato
internal
under
multiple
abiotic
real-time,
we
introduce
covalent
organic
framework
(COF)
film
synthesized
self-assembly
layer
through
oil/water
interface
sensitive
material
develop
multifilm-integrated
sensor
capable
leaf
surface
humidity
temperature.
The
flexible
substrate
can
stretch
with
growth
ensure
accuracy
long-term
monitoring.
Benefiting
from
performance
characteristics,
such
ultrahigh
sensitivity
(S)
0.8399
nA/%RH
extremely
low-resolution
(ΔRH)
value
0.0564%,
which
could
amplify
conducted
signal,
stability
COFMOP-TAPB,
transpiration
on
tomatoes
10
be
monitored
continuously
high
precision
over
long
period
applying
COF-based
lower
at
upper
end
stem
morphology.
Finally,
employ
metaheuristic
optimization
algorithms
predict
time
series
change
trend
future
so
that
farmers
take
corresponding
preventive
measures
healthy
tomatoes.
Since
most
conductive
polymers
are
p-type,
developing
high-performance
n-type
organic–inorganic
composite
thermoelectric
(TE)
fibers
is
a
great
challenge.
Herein,
poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS)-coated
Ag2Te
nanowires
(PC-Ag2Te
NWs)
were
prepared
by
liquid-phase
reaction
using
PEDOT:PSS-coated
Te
(PC-Te
as
templates,
and
the
PEDOT:PSS/PC-Ag2Te
NWs
then
wet
spinning.
As
content
of
PC-Ag2Te
increases,
fiber
changes
from
p-type
to
n-type.
The
PEDOT:
PSS
coating
greatly
improves
dispersibility
in
matrix,
resulting
an
ultrahigh
87.5
wt
%
fibers,
which
exhibited
Seebeck
coefficient
−61.3
μV
K–1
power
factor
65.3
μW
m–1
K–2.
value
higher
than
those
previously
reported
TE
fibers.
Contrary
estimated
thermal
conductivity
other
reports,
this
work,
was
measured
via
transient
photoelectrothermal
(TPET)
technique.
In
addition,
has
good
tensile
properties
mechanical
strength,
elongating
at
break
47.37%
stress
6.59
MPa.
For
application
demonstration,
self-powered
temperature
sensor
assembled,
can
utilize
vertical
difference
between
human
body
environment
respond
quickly
small
difference.
Thermoelectric
textiles
have
garnered
significant
attention
in
energy
harvesting
and
temperature
sensing
due
to
their
comfort
reliable
long-term
power
generation
capabilities.
However,
existing
thermoelectric
rarely
realize
antibacterial,
high
output
performance,
capabilities
simultaneously.
Here,
we
present
a
facile
scalable
method
for
fabricating
n-type
silver
selenide
(Ag2Se)
cotton
threads
with
exceptional
output,
advanced
The
Ag-Ag2Se
segmented
structures
are
prepared
using
the
selenization
method.
Subsequently,
textile
consisting
of
50
pairs
p-n
legs
is
fabricated,
which
can
generate
density
500
μW
m-2
at
difference
30
K,
it
provide
an
voltage
24.7
mV
when
worn
on
arm
room
temperature.
textile-based
sensor
exhibits
detection
(0.7
K)
response
time
(2.49
s).
Integrating
Ag2Se
onto
enables
utilization
multipixel
touchpads
writing
communication.
Additionally,
these
sensors
be
incorporated
into
gloves
accurately
detect
surrounding
objects'
temperatures.
This
thread
not
only
facilitates
but
also
establishes
solid
foundation
widespread
application
multifunctional
electronics.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(46), С. 64042 - 64049
Опубликована: Ноя. 6, 2024
A
wearable
thermoelectric
cooler
(TEC)
for
personal
thermal
management
exhibits
significant
growth
in
numerous
applications
comfort
and
saving
the
energy
consumed
by
space
cooling.
Most
TECs
provide
a
large
cooling
performance
with
assistance
of
rigid
heatsinks
electrodes,
limiting
wearability
practical
implementation.
Here,
we
design
propose
flexible
bridged
TEC
high
heatsink
spray-printed
liquid
metal
electrodes.
The
system
combines
bendable
heatsink,
thermally
insulative
TE
layer,
bottom
conductive
layer.
Especially,
composed
foam,
phase
change
material,
fin
structure
greatly
enhances
conduction,
storage,
diffusion
capacities.
Our
desired
comfortability
obtains
an
ideal
temperature
drop
3
°C
on
human
skin.
Also,
it
could
work
as
self-generator
providing
45
mV
ΔT
5
°C,
which
improves
generation
efficiency
more
than
times
due
to
stable
difference
between
two
sides.
This
provides
effective
way
develop
devices
paves
achieving
practical,
personalized
applications.
