Physica Scripta,
Год журнала:
2024,
Номер
99(2), С. 025517 - 025517
Опубликована: Янв. 3, 2024
Abstract
A
device
constructed
from
metamaterials
is
proposed,
which
makes
asymmetric
transmission
and
reflection
achieved
in
addition
to
a
perfect
dual-band
unidirectional
reflectionlessness
at
THz
frequencies
for
linearly
polarized
incident
waves.
Owing
the
unique
structure
characteristics,
it
exhibits
an
excellent
performance
of
converting
linear
circular
polarization
multiple
frequencies.
Moreover,
maximum
PCR
reaches
99.94%,
ellipticity
approaches
1
eight
Additionally,
UR
AT
are
within
broad
ranges
incidence
angle
θ
distance
d
between
two
resonators.
Utilization
metamaterial
design
will
facilitate
multifunctionality
meta-device
promote
further
advancements
integrated
processes,
communication,
radar
other
fields.
Abstract
Metal‐organic
frameworks
(MOFs)
that
are
the
wonder
material
of
21st
century
consist
metal
ions/clusters
coordinated
to
organic
ligands
form
one‐
or
more‐dimensional
porous
structures
with
unprecedented
chemical
and
structural
tunability,
exceptional
thermal
stability,
ultrahigh
porosity,
a
large
surface
area,
making
them
an
ideal
candidate
for
numerous
potential
applications.
In
this
work,
recent
progress
in
design
synthetic
approaches
MOFs
explore
their
applications
fields
gas
storage
separation,
catalysis,
magnetism,
drug
delivery,
chemical/biosensing,
supercapacitors,
rechargeable
batteries
self‐powered
wearable
sensors
based
on
piezoelectric
triboelectric
nanogenerators
summarized.
Lastly,
work
identifies
present
challenges
outlines
future
opportunities
field,
which
can
provide
valuable
references.
Bioelectronic Medicine,
Год журнала:
2023,
Номер
9(1)
Опубликована: Авг. 2, 2023
The
fourth
industrial
revolution
has
led
to
the
development
and
application
of
health
monitoring
sensors
that
are
characterized
by
digitalization
intelligence.
These
have
extensive
applications
in
medical
care,
personal
management,
elderly
sports,
other
fields,
providing
people
with
more
convenient
real-time
services.
However,
these
face
limitations
such
as
noise
drift,
difficulty
extracting
useful
information
from
large
amounts
data,
lack
feedback
or
control
signals.
artificial
intelligence
provided
powerful
tools
algorithms
for
data
processing
analysis,
enabling
intelligent
monitoring,
achieving
high-precision
predictions
decisions.
By
integrating
Internet
Things,
intelligence,
sensors,
it
becomes
possible
realize
a
closed-loop
system
functions
collection,
online
diagnosis,
treatment
recommendations.
This
review
focuses
on
healthcare
enhanced
technologies
aspects
materials,
device
structure,
integration,
scenarios.
Specifically,
this
first
introduces
great
advances
wearable
respiration
rate,
heart
pulse,
sweat,
tears;
implantable
cardiovascular
nerve
signal
acquisition,
neurotransmitter
monitoring;
soft
electronics
precise
therapy.
Then,
recent
volatile
organic
compound
detection
highlighted.
Next,
current
developments
human-machine
interfaces,
AI-enhanced
multimode
self-sustainable
systems
reviewed.
Last,
perspective
future
directions
further
research
is
also
provided.
In
summary,
fusion
will
provide
intelligent,
convenient,
secure
services
next-generation
biomedical
applications.
Nanoscale Advances,
Год журнала:
2022,
Номер
5(3), С. 538 - 570
Опубликована: Ноя. 7, 2022
This
review
summarizes
the
integration
of
machine
learning
with
surface-enhanced
Raman
scattering
and
infrared
absorption
in
terms
concepts,
processes,
applications,
provides
an
outlook
on
future
development
this
technology.
Abstract
Metamaterials
and
metasurfaces
of
artificial
micro-/nano-
structures
functioning
from
microwave,
terahertz,
to
infrared
regime
have
enabled
numerous
applications
bioimaging,
cancer
detection
immunoassay
on-body
health
monitoring
systems
in
the
past
few
decades.
Recently,
trend
turning
metasurface
devices
flexible
stretchable
has
arisen
that
flexibility
stretchability
not
only
makes
device
more
biocompatible
wearable,
but
also
provides
unique
control
manipulation
structural
geometrical
reconfiguration
a
creative
manner,
resulting
an
extraordinary
tunability
for
biomedical
sensing
purposes.
In
this
Review,
we
summarize
recent
advances
design
fabrication
techniques
reconfigurable
their
date
thereof,
put
forward
perspective
future
development
metamaterials
metasurfaces.
Volatile
organic
compounds
(VOCs)
are
a
class
of
with
high
vapor
pressure
and
low
boiling
points,
widely
present
in
both
natural
environments
human
activities.
VOCs
released
from
various
sources
not
only
contribute
to
environmental
pollution
but
also
pose
threats
ecosystems
health.
Moreover,
some
considered
biomarkers
exhaled
breath
can
be
utilized
identify
diseases.
Therefore,
monitoring
controlling
VOC
emissions
concentrations
crucial
for
safeguarding
the
environment
In
recent
years,
significant
advancements
have
been
achieved
micro‐electromechanical
system
(MEMS)‐based
sensing
optical
technologies,
offering
new
avenues
detection.
This
article
provides
comprehensive
overview
research
progress
MEMS
sensors,
focusing
on
their
mechanisms
classifications.
It
then
discusses
role
artificial
intelligence
enhancing
identification
quantification,
as
well
trends
toward
sensor
miniaturization
intelligence.
Furthermore,
highlights
diverse
applications
sensors
medical
diagnostics,
agricultural
food
testing,
Internet
Things.
Finally,
it
emphasizes
opportunities
challenges
associated
providing
valuable
insights
practical
applications.
iScience,
Год журнала:
2022,
Номер
25(8), С. 104727 - 104727
Опубликована: Июль 5, 2022
The
next
frontier
of
photonics
is
evolving
into
reconfigurable
platforms
with
tunable
functions
to
realize
the
ubiquitous
application.
dynamic
control
optical
properties
highly
desirable
for
a
plethora
applications,
including
communication,
display,
self-adaptive
photonics,
and
multi-spectral
camouflage.
Recently,
meet
response
over
broad
bands,
optically
active
materials
have
been
integrated
diverse
photonic
platforms,
typically
in
dimension
micro/nanometer
scales.
Here,
we
review
recent
advances
controlling
from
visible
terahertz
(THz)
spectral
range.
We
propose
guidelines
designing
conjunction
materials,
inherent
wavelength
characteristics.
In
particular,
devote
our
their
potential
uses
five
different
applications:
structural
coloration,
metasurface
flat
optics,
memory,
thermal
radiation,
plasmonics.
Finally,
conclude
an
outlook
on
challenges
prospects
photonics.
Machine‐learning‐enhanced
nanosensors
are
rapidly
emerging
as
a
promising
solution
in
the
field
of
sensor
technology,
traditional
sensors
encounter
limitations
data
analysis
their
development.
Since
inception
machine‐learning
algorithms
being
applied
to
enhance
nanosensors,
they
have
gained
significant
attention
due
adaptive
and
predictive
capabilities,
which
promise
dramatically
improve
efficiency
collection
processing
applications.
Herein,
comprehensive
overview
technological
innovation
is
provided
by
reviewing
latest
developments
cloud
computing,
edge
burgeoning
realm
neuromorphic
computing.
Cloud
computing
has
emerged
powerhouse,
harnessing
formidable
computational
capabilities
process
vast
volumes
high‐dimensional
data.
Then,
research
directions
for
various
applications
these
artificial
intelligence
(AI)‐enhanced
outlined.
Moreover,
integration
AI
nanosensor
technology
into
chip‐level
although
promising,
still
faces
challenges
such
energy‐efficient
hardware
development,
algorithm
optimization,
scalability
mass
production.
Finally,
forward‐looking
perspective
on
future
machine‐learning‐enhanced
provided,
delineating
opportunities
further
this
exciting
field.
Nanotechnology Reviews,
Год журнала:
2024,
Номер
13(1)
Опубликована: Янв. 1, 2024
Abstract
Terahertz
metasurface
(THz-MS)
biosensor
is
a
hybrid
technology
that
combines
terahertz
time-domain
spectroscopy
and
for
the
detection
of
biomolecules
cells.
Compared
with
traditional
strategies,
it
label-free,
non-invasive,
time-saving,
easy
to
operate.
However,
three
fundamental
issues,
namely,
low
sensitivity,
specificity,
drastic
water
absorption,
hinder
development
THz-MS
biosensors
clinical
application.
Recently,
numerous
studies
have
been
performed
solve
these
problems,
results
show
great
potential
sensitive
nucleotides,
proteins,
Therefore,
important
summarize
in
biomedical
detection.
In
this
review,
we
summarized
mechanism,
manufacturing,
implementation
biosensors.
Then,
strategies
improve
selectivity,
means
reduce
absorption
are
presented.
Sensitivity
can
be
improved
by
suppressing
electromagnetic
radiation
strengthening
interaction
between
target
molecules
meta-atoms.
Antibodies
aptamers
most
effective
improving
specificity.
Microfluidics
hydrogels
two
ways
absorption.
Subsequently,
applications
nucleotide,
cells
summarized.
Finally,
prospects
future
outlined.
Results in Physics,
Год журнала:
2024,
Номер
63, С. 107861 - 107861
Опубликована: Июль 3, 2024
This
study
presents
and
demonstrates
a
design
of
micro-electro-mechanical
system
(MEMS)
reconfigurable
terahertz
(THz)
metamaterial
absorber
(TMA)
that
shows
tunable
free
spectra
range
with
maximum
value
as
166
GHz
in
transverse
magnetic
mode
switchable
resonance
from
1.24
THz
to
1.53
THz.
The
unit
structure
TMA
consists
two
movable
rectangular
resonators
aside
an
x-shaped
resonator
at
the
center
comprising
c-shaped
connected
upside
down.
material
configuration
is
typical
metal–insulator-metal
sandwich
configuration.
That
bottom
Au
layer
preventing
penetration
wave,
dielectric
SiO2
accommodate
absorb
incident
patterned
array
select
resonant
frequency.
electromagnetic
response
could
be
flexibly
modulated
when
reconfigured
by
changing
gaps
between
based
on
MEMS
platform.
Meanwhile,
owing
asymmetry
structure,
tuned
single-,
dual-,
triple-
quad-resonances
varying
polarization
state
incidence.
Furthermore,
sensitivity
explored
demonstrated
remarkable
linearity
under
variation
surrounding
environment
refractive
index
1.0
2.0.
feasibility
validated
experimental
absorption
are
well
meet
simulation
results.
above
results
indicate
proposed
possesses
great
potential
applications
multiple
switches,
highly
efficient
environmental
sensors.
