Authorea (Authorea),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 3, 2023
A
hybrid
pore-scale
simulation
method
using
Lattice-Boltzmann
(LB)
coupled
with
Langevin-Dynamics
(LD)
is
proposed
to
investigate
the
transport
physics
of
nanoparticles
in
microchannel.
The
controlling
factors
(i.e.,
ionic
strength,
particle
diameter
and
Reynolds
number)
are
investigated
attachment
process
NPs.
It
observed
that
a
threshold
value
efficiency
exists
as
strength
increases
about
0.01
M.
Moreover,
aqueous
phase
has
critical
effect
on
behavior
For
purpose
quantitatively
characterizing
structure
NP
suspensions
under
varying
conditions,
general
diagram
including
three
flow
patterns
(isolated,
transitional
clustered
regime)
first
for
suspension
specified
number.
outcomes
this
work
provide
valuable
insight
importance
size,
hydrodynamic
effects
NPs
porous
media
Applied Surface Science,
Journal Year:
2023,
Volume and Issue:
615, P. 156331 - 156331
Published: Jan. 4, 2023
Streaming
potential
and
quartz
crystal
microbalance
measurements,
combined
with
all-atom
molecular
dynamics
simulations,
were
used
to
study
the
pH
dependency
of
adsorption
two
basic
homopolypeptides,
poly-L-lysine
(PLL)
poly-L-arginine
(PARG),
on
α-quartz
surface.
We
report
that
observed
behavior
rises
from
an
interplay
i)
change
in
number
possible
peptide-surface
ion
pairs
between
charged
moieties
ii)
repulsive
electrostatic
interactions
polypeptide
molecules.
For
low
values,
was
strongest
stable
monolayers
formed.
However,
repulsion
polypeptides
led
a
relatively
maximum
surface
coverage.
On
other
hand,
higher
more
weakly
bound,
but
significantly
denser,
peptide
films
limited
stability.
Simulations
indicate
are
main
driving
force
for
adsorption,
while
hydrogen
bonding
non-specific
also
contribute.
Additionally,
important
role
counterions
negatively
form
positively
adlayer
is
highlighted.
Ion
release
condensed
sodium
ions
at
occurs
via
displacement
by
adsorption.
The
mechanisms
revealed
this
work
provide
systematic
guidelines
engineering
active
surfaces
peptides
controlled
coverage
reversible
binding.
Journal of Applied Physics,
Journal Year:
2025,
Volume and Issue:
137(17)
Published: May 2, 2025
A
two-dimensional
Monte
Carlo
model
for
a
description
of
electroseparation
binary
suspension
small
and
big
particles
placed
between
two
membranes
is
developed.
It
assumed
that
the
are
permeable
only
to
with
diameter
d.
The
ratio
particle
diameters
D/d
varied
within
interval
2–10.
direction
electric
field
changed
period
TE.
effects
concentration
distance
electrodes
electrophoretic
velocity
on
kinetics
studied.
Behavior
total
time
tf
required
elimination
all
from
system
discussed.
At
some
optimal
values
TE,
minimum
value
was
observed.
Journal of Statistical Mechanics Theory and Experiment,
Journal Year:
2025,
Volume and Issue:
2025(1), P. 013402 - 013402
Published: Jan. 1, 2025
Abstract
The
adoption
of
agroecological
practices
will
be
crucial
to
address
the
challenges
climate
change
and
biodiversity
loss.
Such
favor
cultivation
plants
in
complex
mixtures
with
layouts
differing
from
monoculture
approach
conventional
agriculture.
Inspired
by
random
sequential
adsorption
processes,
we
propose
a
one-dimensional
model
which
are
represented
as
line
segments
that
start
points
grow
at
constant
rate
until
they
reach
length
σ
after
time
interval
τ
.
planting
positions
times
randomly
chosen
constraint
plant
overlap
is
forbidden.
We
apply
an
exact,
event-driven
simulation
investigate
resulting
spatiotemporal
patterns
yields
both
mono-
duocultures.
After
transient
period,
oscillations
density
coverage,
field
reaches
steady
state
mean
age
one
half
maturity.
structure
active
characterized
correlation
functions
between
fluctuation
its
k
th
neighbour.
Nearest
neighbours
negatively
correlated,
while
next
nearest
tend
have
similar
ages.
yield
increases
approaches
maximum
value
4/3
per
unit
time.
For
two
species
same
size
maturity
but
different
growth
rates,
more
slowly
growing
enriched
harvest
compared
seed
mix
composition.
If
sizes,
smaller
and,
sufficiently
high
rate,
larger
may
completely
absent.
ratio
σ/τ
selectivity
insensitive
rate.
This
algorithms
describing
strategies
extended
higher
dimensions,
other
assist
design
novel
microfarms.
Physical review. E,
Journal Year:
2025,
Volume and Issue:
111(3)
Published: March 10, 2025
Random
sequential
adsorption
(RSA)
is
one
of
the
most
widely
used
theoretical
models
macromolecule
and
particle
adsorption.
Here
we
consider
jammed
(saturated)
states
RSA
process
aligned,
nonoverlapping
$k$-mers
(linear
objects
occupying
$k$
consecutive
lattice
sites)
in
square,
triangular,
cubic
lattices
show
that
each
$k$-mer
such
a
state
belongs
to
percolating
cluster.
We
also
discuss
several
generalizations
our
approach,
including
hypercubic
with
different
lengths.
Development
of
fabrication
protocols
for
large-area
plasmonic
nanostructures
with
sub-10
nm
gaps
a
spatially
controlled
distribution
is
critical
their
real-world
applications.
In
this
work,
we
develop
simple,
cleanroom-free
protocol
the
macroscopic-sized
substrates
(>6
cm2),
featuring
tunable
multiresonance
optical
response
and
light
concentration
in
gaps.
Critically,
these
are
free
to
interact
surrounding
medium.
This
architecture
consists
nonperiodically
distributed
dielectric
nanospheres
coated
metal
multilayer,
forming
semispherical
core-shell-like
(CSLNs)
surrounded
by
planar
film.
The
formed
between
caps
film
easily
tuned
adjusting
parameters,
such
as
multimetal
layer
thickness,
composition,
or
nanosphere
size
density.
excellent
structural
homogeneity,
wide
tunability,
extreme
confinement
subwavelength
nanogaps
make
CSLN-based
an
ideal
platform
comprehensive
surface-enhanced
Raman
scattering
(SERS)
spectroscopy.
proven
through
combination
numerical
modeling
iterative
fabrication/characterization,
leading
optimized
showing
cutting-edge
spatial
uniformity
down
1.9%
determined
relative
standard
deviation
(RSD)
SERS
signal
p-mercaptobenzoic
acid
225
spectra
over
3600
μm2
area.
High
sensitivity
evidenced
enhancement
factor
∼10.6
proposed
also
meet
all
other
demanding
criteria,
including
sufficient
temporal
stability
(RSD
<4%),
high
substrate-to-substrate
reproducibility
(<15%),
activity
toward
three
various
analytes.
unique
geometry
spectral
tunability
CSLN
will
be
great
value
plasmon-driven
International Journal of Cosmetic Science,
Journal Year:
2024,
Volume and Issue:
47(1), P. 58 - 72
Published: Aug. 12, 2024
This
research
investigates
how
particle
parameters,
such
as
zeta
potential,
size,
functional
group,
material
composition,
and
hydrophobicity
affect
their
affinity
deposition
of
particles
onto
hair.
Streaming
potential
was
used
the
technique
for
analysis.
The
streaming
data
obtained
then
converted
to
surface
coverage
data.
Scanning
electron
microscopy
(SEM)
also
done
visualize
localization
on
hair
surface.
study
found
stronger
healthy
than
damaged
(oxidatively
bleached)
hair,
due
diminished
interaction
sites
from
removal
shaft's
external
lipid
layer.
SEM
imaging
supported
these
findings
offered
insights
into
localization.
Hydrophilic
silica
accumulated
along
exposed
hydrophilic
cuticle
edges
hydrogen
bonding
with
endocuticle.
is
hypothesized
be
limited
binding
hydrophobic
In
an
abundance
across
results
in
more
dispersed
binding.
Hydrogen
electrostatic
attraction
were
shown
predominant
forces
influencing
deposition,
interactions
playing
a
less
influential
role.
studies
proved
that
attractions
work
over
longer
range
are
effective
at
lower
conditions
compared
which
only
start
play
bigger
role
higher
concentrations.
Steric
hindrance
bulky
side
groups
acted
significant
repulsive
force.
Results
revealed
larger
deposit
poorly
both
smaller
ones.
Compared
neutrally
charged
nanoparticles
(SN-2),
positively
PMMA
(PN+16)
have
highly
(PN+49)
depositing
most
rapidly.
provides
fundamental
understanding
particle-surface
parameters
influence
damaging
affects
deposition.
