Friction,
Год журнала:
2024,
Номер
13(2), С. 9440938 - 9440938
Опубликована: Дек. 6, 2024
The
stable
operation
of
friction
pairs
is
one
the
most
critical
factors
to
maintain
mechanical
equipment.
real-time
monitoring
lubrication
state
pair
very
important
ensure
normal
machinery
and
realize
early
warning
wear
failure,
but
it
also
a
big
challenge.
In
this
article,
new
in-situ
system
designed,
which
can
monitor
through
triboelectrification.
current
acquisition
module
coefficient
are
integrated
into
high
vacuum
hydrodynamic
oil
film
thickness
measuring
instrument
explore
intrinsic
relationship
between
triboelectricity
curves.
When
severe
occurs,
at
interface
no
longer
complete,
accumulated
triboelectric
charge
breaks
down
air
causes
discharge,
suddenly
increases
from
nanoampere
level
microampere
level.
time
node
when
discharge
occurs
steel
ball
well
consistent
with
suffers
serious
wear.
According
corresponding
status
pair,
an
designed
operating
in
real
signals.
worn,
will
send
out
sound
light
alarm
signals
warnings
mobile
terminal
Internet
Things,
providing
reliable
method
for
grease-lubricated
machinery.
Biosensors,
Год журнала:
2023,
Номер
13(10), С. 933 - 933
Опубликована: Окт. 18, 2023
According
to
the
age-old
adage,
while
eyes
are
often
considered
gateway
soul,
they
might
also
provide
insights
into
a
more
pragmatic
aspect
of
our
health:
blood
sugar
levels.
This
potential
breakthrough
could
be
realized
through
development
smart
contact
lenses
(SCLs).
Although
were
first
developed
for
eyesight
correction,
new
uses
have
recently
become
available.
In
near
future,
it
possible
monitor
variety
ocular
and
systemic
disorders
using
lens
sensors.
Within
realm
glaucoma,
SCLs
present
novel
prospect,
offering
potentially
superior
avenue
compared
traditional
management
techniques.
These
introduce
possibility
non-invasive
continuous
monitoring
intraocular
pressure
(IOP)
enabling
personalized
administration
medication
as
when
needed.
convergence
holds
great
promise
advancing
glaucoma
care.
this
review,
recent
developments
in
SCLs,
including
their
applications,
such
IOP
glucose
monitoring,
briefly
discussed.
Abstract
A
wearable
sensing
system
that
can
reconstruct
dynamic
3D
human
body
models
for
virtual
cloth
fitting
is
highly
important
in
the
era
of
information
and
metaverse.
However,
few
research
has
been
conducted
regarding
conformal
sensors
accurately
measuring
circumferences
reshaping.
Here,
we
develop
a
stretchable
spring‐sheathed
yarn
sensor
(SSYS)
as
smart
ruler,
precisely
circumference
bodies
long‐term
tracking
movement
reconstruction.
The
SSYS
robust
property,
high
resilience,
stability
(>18
000),
ultrafast
response
(12
ms)
to
external
deformation.
It
also
washable,
wearable,
tailorable,
durable
long‐time
wearing.
Moreover,
geometric,
mechanical
behaviors
are
systematically
investigated
both
theoretically
experimentally.
In
addition,
transfer
learning
algorithm
bridges
discrepancy
real
performance
developed,
enabling
small
measurement
error
1.79%,
noticeably
lower
than
traditional
algorithm.
Furtherly,
numerically
consistent
with
actual
reconstructed.
reconstruction
based
on
wearing
enables
excellent
shirt
customization
efficient
manner.
This
technology
shows
great
potential
human‐computer
interaction,
intelligent
fitting,
specialized
protection,
sports
activities,
physiological
health
tracking.
image
Nanomaterials,
Год журнала:
2023,
Номер
13(24), С. 3170 - 3170
Опубликована: Дек. 18, 2023
The
highest
energy
conversion
efficiencies
are
typically
shown
by
lead-containing
piezoelectric
materials,
but
the
harmful
environmental
impacts
of
lead
and
its
toxicity
limit
future
use.
At
bulk
scale,
lead-based
materials
have
significantly
higher
properties
when
compared
to
lead-free
materials.
However,
at
nanoscale,
material
can
be
larger
than
scale.
Poly(vinylidene
fluoride)
(PVDF)
fluoride-co-trifluoroethylene)
(PVDF-TrFE)
nanomaterials
reviewed
their
suitability
for
use
in
nanogenerators
(PENGs)
is
determined.
impact
different
PVDF/PVDF-TrFE
composite
structures
on
power
output
explained.
Strategies
improve
given.
Overall,
this
review
finds
that
increased
nanoscale.
these
values
still
lower
ceramics
If
sole
goal
developing
a
PENG
maximize
power,
nanoscale
should
considered.
brittle,
thus
encapsulation
PVDF
way
increase
flexibility
PENGs.
offers
advantage
being
nontoxic
biocompatible,
which
useful
many
applications.
Journal of Applied Mathematics and Physics,
Год журнала:
2024,
Номер
12(07), С. 2506 - 2558
Опубликована: Янв. 1, 2024
Water
scarcity
in
arid
regions
poses
significant
challenges
to
sustainable
development
and
human
well-being.
This
article
explores
both
existing
innovative
technologies
methods
produce
large
amounts
of
water
address
these
effectively.
Key
approaches
include
atmospheric
generation,
advanced
desalination
techniques,
collection
such
as
fog
nets
dew
harvesting,
geothermal
extraction,
recycling
reuse.
Each
method
is
evaluated
for
its
feasibility
with
technology,
potential
time
implementation,
required
investments,
specific
challenges.
By
leveraging
combining
them
into
a
multifaceted
management
strategy,
it
possible
enhance
security,
support
agricultural
industrial
activities,
improve
living
conditions
regions.
Collaborative
efforts
between
governments,
private
sector
entities,
research
institutions
are
crucial
advancing
ensuring
their
implementation.
The
provides
comprehensive
overview
the
current
state
technologies,
large-scale
application,
recommendations
future
development.
Ukrainian Journal of Physics,
Год журнала:
2025,
Номер
70(1), С. 24 - 24
Опубликована: Янв. 15, 2025
Органiчний
полiмер
полiвiнiлiденфториду
(PVDF)
є
перспективним
та
комерцiйно
привабливим
матерiалом
для
сучасних
потреб
нанотехнологiй
i
мiкроелектронiки
бiомедицини.
Детектування
фазового
складу
сумiшей
PVDF
важливою
технологiчною
задачею.
В
роботi
представлено
результати
ab
initio
розрахункiв
електронної
зонної
структури
трьох
найбiльш
розповсюджених
фаз
кристалiв
полiвiнiлiденфториду,
α-,
β-
γ-PVDF.
Одержано
проаналiзовано
структуру
одноелектронних
зон,
парцiальних
густин
електронних
станiв,
просторових
розподiлiв
гу-стини,
спектрiв
дiелекричних
сталих,
комплексного
показника
заломлення,
поглинання
вiдбивання,
спектри
iнфрачервоного
поглинання,
комбiнацiйного
розсiювання
рентґенограми
γ-фаз
PVDF.
Проведений
аналiз
результатiв
дозволив
зробити
ряд
висновкiв
щодо
особливостей
формування
оптичних
властивостей
кристала
PVDF,
а
також
деякi
передбачення
можливостi
експериментального
монiторингу
цiєї
сполуки.
Встановлено,
що
детектування
одночасної
наявностi
α-(або
γ-)
фази
в
зразках
може
бути
ефективно
здiйснене
методами
спектроскопiї
вiдбивання
дiапазонi
вакуумного
ультрафiолету,
розсiювання,
рентґенофазного
аналiзу.
Видiлити
ж
наявнiсть
α-фази
на
фонi
γ-фази
зазначеними
буде
практично
неможливо.
