Nature Communications,
Год журнала:
2016,
Номер
7(1)
Опубликована: Май 26, 2016
The
Brownian
motion
of
molecules
at
thermal
equilibrium
usually
has
a
finite
correlation
time
and
will
eventually
be
randomized
after
long
delay
time,
so
that
their
displacement
follows
the
Gaussian
statistics.
This
is
true
even
when
have
experienced
complex
environment
with
time.
Here,
we
report
lateral
acetylcholine
receptors
on
live
muscle
cell
membranes
does
not
follow
statistics
for
normal
diffusion.
From
careful
analysis
large
volume
protein
trajectories
obtained
over
wide
range
sampling
rates
durations,
find
normalized
histogram
displacements
shows
an
exponential
tail,
which
robust
universal
cells
under
different
conditions.
experiment
indicates
observed
non-Gaussian
dynamic
heterogeneity
are
inherently
linked
to
slow-active
remodelling
underlying
cortical
actin
network.
Proceedings of the National Academy of Sciences,
Год журнала:
2015,
Номер
112(47), С. 14495 - 14500
Опубликована: Ноя. 11, 2015
Topological
mechanical
metamaterials
are
artificial
structures
whose
unusual
properties
protected
very
much
like
their
electronic
and
optical
counterparts.
Here,
we
present
an
experimental
theoretical
study
of
active
metamaterial
--
comprised
coupled
gyroscopes
on
a
lattice
that
breaks
time-reversal
symmetry.
The
vibrational
spectrum
these
novel
displays
sonic
gap
populated
by
topologically
edge
modes
which
propagate
in
only
one
direction
unaffected
disorder.
We
mathematical
model
explains
how
the
mode
chirality
can
be
switched
via
controlled
distortions
underlying
lattice.
This
effect
allows
current
to
determined
demand.
envision
applications
edges
design
loss-free,
one-way,
acoustic
waveguides
demonstrate
this
functionality
experiment.
Nature Communications,
Год журнала:
2018,
Номер
9(1)
Опубликована: Авг. 8, 2018
Active
matter
extracts
energy
from
its
surroundings
at
the
single
particle
level
and
transforms
it
into
mechanical
work.
Examples
include
cytoskeleton
biopolymers
bacterial
suspensions.
Here,
we
review
experimental,
theoretical
numerical
studies
of
active
nematics
-
a
type
system
that
is
characterised
by
self-driven
units
with
elongated
shape.
We
focus
primarily
on
microtubule-kinesin
mixtures
hydrodynamic
theories
describe
their
properties.
An
important
theme
turbulence
associated
motile
topological
defects.
discuss
ways
in
which
may
be
controlled,
pre-requisite
to
harvesting
materials,
consider
appearance,
possible
implications,
defects
cellular
systems
biological
processes.
Journal of Physics Condensed Matter,
Год журнала:
2020,
Номер
32(19), С. 193001 - 193001
Опубликована: Фев. 14, 2020
Abstract
Activity
and
autonomous
motion
are
fundamental
in
living
engineering
systems.
This
has
stimulated
the
new
field
of
‘active
matter’
recent
years,
which
focuses
on
physical
aspects
propulsion
mechanisms,
motility-induced
emergent
collective
behavior
a
larger
number
identical
agents.
The
scale
agents
ranges
from
nanomotors
microswimmers,
to
cells,
fish,
birds,
people.
Inspired
by
biological
various
designs
synthetic
nano-
micromachines
have
been
proposed.
Such
machines
provide
basis
for
multifunctional,
highly
responsive,
intelligent
(artificial)
active
materials,
exhibit
ability
perform
tasks
response
external
stimuli.
A
major
challenge
understanding
designing
matter
is
their
inherent
nonequilibrium
nature
due
persistent
energy
consumption,
invalidates
equilibrium
concepts
such
as
free
energy,
detailed
balance,
time-reversal
symmetry.
Unraveling,
predicting,
controlling
truly
interdisciplinary
endeavor
at
interface
biology,
chemistry,
ecology,
engineering,
mathematics,
physics.
vast
complexity
phenomena
mechanisms
involved
self-organization
dynamics
motile
comprises
challenge.
Hence,
advance,
eventually
reach
comprehensive
understanding,
this
important
research
area
requires
concerted,
synergetic
approach
disciplines.
2020
roadmap
Journal
Physics:
Condensed
Matter
addresses
current
state
art
provides
guidance
both
students
well
established
scientists
efforts
advance
fascinating
area.
Reports on Progress in Physics,
Год журнала:
2018,
Номер
81(4), С. 046601 - 046601
Опубликована: Янв. 9, 2018
Exciting
recent
developments
suggest
that
phase
transitions
represent
an
important
and
ubiquitous
mechanism
underlying
intracellular
organization.
We
describe
key
experimental
findings
in
this
area
of
study,
as
well
the
application
classical
theoretical
approaches
for
quantitatively
understanding
these
data.
also
discuss
way
which
equilibrium
thermodynamic
driving
forces
may
interface
with
fundamentally
out-of-equilibrium
nature
living
cells.
In
particular,
time
and/or
space-dependent
concentration
profiles
modulate
behavior
biomolecules
future
directions
both
work
will
shed
light
on
biological
activity
modulates
assembly,
properties,
function
viscoelastic
states
matter.
Annual Review of Cell and Developmental Biology,
Год журнала:
2016,
Номер
32(1), С. 469 - 490
Опубликована: Авг. 8, 2016
Cell
migration
is
central
to
a
multitude
of
physiological
processes,
including
embryonic
development,
immune
surveillance,
and
wound
healing,
deregulated
key
cancer
dissemination.
Decades
investigations
have
uncovered
many
the
molecular
physical
mechanisms
underlying
cell
migration.
Together
with
protrusion
extension
body
retraction,
adhesion
substrate
via
specific
focal
points
has
long
been
considered
an
essential
step
in
Although
this
true
for
cells
moving
on
two-dimensional
substrates,
recent
studies
demonstrated
that
adhesions
are
not
required
three
dimensions,
which
confinement
sufficient
maintain
contact
its
substrate.
Here,
we
review
led
challenging
requirement
migration,
discuss
proposed
translocation
during
adhesion-independent
highlight
remaining
open
questions
future.
