Valley-locked waveguide state topological transport of multiband out-of-plane body elastic waves
Lin Jian-hua,
Bi Reng-gui,
Tang Shi-yao
и другие.
Acta Physica Sinica,
Год журнала:
2025,
Номер
74(6), С. 0 - 0
Опубликована: Янв. 1, 2025
Since
the
expansion
of
topological
insulator
concept
from
field
quantum
waves
to
elastic
waves,
research
related
system
valley
hall
has
been
developed
rapidly
because
its
novel
physical
properties,
rich
designability
for
wave
modulation
and
simple
implementation
conditions.
To
address
limitations
small
energy
inflexible
structure
edge-state
transmission
insulators
in
general,
a
waveguide
heterostructure
is
designed
based
on
locking
principle.
The
original
configuration
vein-connected
honeycomb
lattice.
Using
equivalent
structural
parameter
method
calculate
band
characteristics
model,
it
found
that
there
are
three
Dirac
points
at
corner
K
Brillouin
zone,
spatial
inversion
symmetry
can
be
broken
by
changing
parameters,
so
as
realize
phase
transition
out-of-plane
body
mode
frequency
bands;
between
two
heterogeneous
formed
superimposing
point
phonon
crystals
insulators,
state
multiband,
tunable,
robust,
etc.
used
design
splitters
convergers
achieve
flexible
manipulation
waves.
This
study
enriches
acoustics,
multi-band
potential
applications
communication
information
processing.
Язык: Английский
Electro-mechanical multi-branch channel driven by higher-order topological rainbow
Mechanics of Advanced Materials and Structures,
Год журнала:
2025,
Номер
unknown, С. 1 - 12
Опубликована: Фев. 28, 2025
Язык: Английский
Elastic dislocation states of full-polarization micromechanical metamaterials
Thin-Walled Structures,
Год журнала:
2025,
Номер
unknown, С. 113270 - 113270
Опубликована: Апрель 1, 2025
Язык: Английский
Functionally graded elastic valley metamaterials for low-frequency surface wave manipulation
Mechanics of Advanced Materials and Structures,
Год журнала:
2024,
Номер
unknown, С. 1 - 9
Опубликована: Ноя. 28, 2024
This
paper
proposes
a
groundbreaking
surface
wave
metamaterial,
which
leverages
common
materials
such
as
concrete
and
soil
operates
on
the
principles
of
local
resonance.
The
topological
phase
transition
is
controlled
with
geometry
resonant
element,
verified
through
theoretical
Valley
Chern
number.
Moreover,
functionally
graded
elastic
metamaterial
devised
to
achieve
rainbow
effect
low-frequency
waves.
utilization
piezoelectric
sheets
validates
energy
harvesting
broadband
low
frequency
for
metamaterial.
study
offers
an
innovative
method
controlling
waves,
paving
way
new
avenues
in
harvesting,
vibration
mitigation,
noise
reduction.
Язык: Английский