A Fully Printable and Integrated System with Long-Term Stability for Versatile and Multimodal Perspiration Tracking
Kemeng Zhou,
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Ruochen Ding,
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Wenhao Ye
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et al.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(47), P. 15092 - 15100
Published: Oct. 25, 2024
Real-time
and
continuous
monitoring
of
physiological
status
via
noninvasive
sweat
sensing
shows
promise
for
personalized
healthcare
fitness
management.
However,
the
largely
varied
perspiration
rates
in
different
body
statuses
introduce
challenges
effective
collection
accurate
sensing.
Herein,
a
fully
printable
strategy
was
developed
to
realize
integrated
patches
wireless
biomarker
levels
with
desirable
stability
versatility.
The
calcium
sensors
modified
ion-selective
membranes
displayed
an
ultrawide
linear
range
0.1-100
mM
long-term
minimized
drift
down
0.083
mV/h
around
40
h.
Moreover,
microfluidic
channels
versatile
configurations
were
capable
minimum
rate
0.5
μL/min
large
storage
volume
up
200
μL.
as-proposed
platforms
provide
high
compatibility
sensor
integration
achieve
tracking
comprehensive
health
monitoring.
Language: Английский
Evolutionary Approximation of Ternary Neurons for On-sensor Printed Neural Networks
Published: Oct. 27, 2024
Printed
electronics
offer
ultra-low
manufacturing
costs
and
the
potential
for
on-demand
fabrication
of
flexible
hardware.
However,
significant
intrinsic
constraints
stemming
from
their
large
feature
sizes
low
integration
density
pose
design
challenges
that
hinder
practicality.
In
this
work,
we
conduct
a
holistic
exploration
printed
neural
network
accelerators,
starting
analog-to-digital
interface
-
major
area
power
sink
sensor
processing
applications
extending
to
networks
ternary
neurons
implementation.
We
propose
bespoke
using
approximate
popcount
popcount-compare
units,
developed
through
multi-phase
evolutionary
optimization
approach
interfaced
with
sensors
via
customizable
analog-to-binary
converters.
Our
evaluation
results
show
presented
designs
outperform
state
art,
achieving
at
least
6x
improvement
in
19x
power.
To
our
knowledge,
they
represent
first
open-source
digital
classifiers
capable
operating
existing
energy
harvesters.
Language: Английский
Feasibility and performance of TiCN-based patch antennas for microwave antenna applications
Mohamad Ashry Jusoh,
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N. I. E. Pamin,
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Nur Iffah Zulaikha Azman
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et al.
Journal of Materials Science Materials in Electronics,
Journal Year:
2024,
Volume and Issue:
35(22)
Published: Aug. 1, 2024
Language: Английский
Epidermal Secretion-purified Biosensing Patch with Hydrogel Sebum Filtering Membrane and Unidirectional Flow Microfluidic Channels
Biomaterials,
Journal Year:
2024,
Volume and Issue:
313, P. 122810 - 122810
Published: Sept. 3, 2024
Language: Английский
Ammonium Sensing Patch with Ultrawide Linear Range and Eliminated Interference for Universal Body Fluids Analysis
Mingli Huang,
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Xiaohao Ma,
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Zongze Wu
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et al.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Dec. 23, 2024
Abstract
Ammonium
level
in
body
fluids
serves
as
one
of
the
critical
biomarkers
for
healthcare,
especially
those
relative
to
liver
diseases.
The
continuous
and
real-time
monitoring
both
invasive
non-invasive
manners
is
highly
desired,
while
ammonium
concentrations
vary
largely
different
fluids.
Besides,
sensing
reliability
based
on
ion-selective
biosensors
can
be
significantly
interfered
by
potassium
ions.
To
tackle
these
challenges,
a
flexible
biocompatible
patch
wireless
was
reported
with
an
ultrawide
linear
range
universal
including
blood,
tears,
saliva,
sweat
urine.
as-prepared
sensors
deliver
reliable
sensitivity
58.7
mV
decade
−1
1–100
mM
desirable
selectivity
coefficient
0.11
interference
ions,
attributed
cross-calibration
within
array.
sensor’s
biocompatibility
validated
cell
growth
sensor
surface
(>
80%),
hemolysis
rates
(<
5%),
negligible
cellular
inflammatory
responses
weight
changes
mice
implanted
sensors.
Such
open
up
new
possibility
compatible
biomarker
analysis
via
versatile
approaches.
Language: Английский