Türk doğa ve fen dergisi :/Türk doğa ve fen dergisi,
Год журнала:
2024,
Номер
13(2), С. 61 - 68
Опубликована: Июнь 28, 2024
This
research
describes
and
assesses
a
terahertz
metamaterial
absorber
(TMA)
with
simple
easy-to-produce
structure
consisting
of
gold-silicon
(optical)-gold
design
as
refractive
index
sensing.
Due
to
the
high
field
limitation
in
detection
regime,
electromagnetic
(EM)
wave’s
absorption
reaches
99.40%
at
frequency
3.719
THz,
including
significant
quality
factor
(Q-Factor)
65.77
figure
merit,
FoM,
21.49.
The
TMA
has
an
remarkable
sensitivity
1.215
THz/RIU
can
be
used
sensor
(RIS).
proposed
absorber-based
is
susceptible
changes
(1.00
1.05)
surrounding
medium.
For
physical
mechanism,
fundamental
peak
mainly
due
simultaneous
occurrence
electric
magnetic
dipole
resonances.
feature
being
excellent
RIS
its
sensing
applications.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(37)
Опубликована: Март 17, 2024
Abstract
The
emergence
of
metamaterials
and
their
continued
prosperity
have
built
a
powerful
working
platform
for
accurately
manipulating
the
behavior
electromagnetic
waves,
providing
sufficient
possibility
realization
metamaterial
absorbers
with
outstanding
performance.
However,
composed
metallic
materials
typically
possess
many
unfavorable
factors,
such
as
non‐adjustable
absorption,
easy
oxidation,
low‐melting,
expensive
preparation
costs.
selection
dielectric
provides
excellent
alternatives
due
to
remarkable
properties,
thus
dielectric‐based
(DBMAs)
attracted
much
attention.
To
promote
breakthroughs
in
DBMAs
guide
future
development,
this
work
systematically
deeply
reviews
recent
research
progress
from
four
different
but
progressive
aspects,
including
physical
principles;
classifications,
material
selections
tunable
properties;
technologies;
functional
applications.
Five
types
theories
related
mechanisms,
Mie
resonance,
guided‐mode
Anapole
are
briefly
outlined
explain
having
near‐perfect
absorption
Mainstream
selections,
structure
designs,
highlighted.
Several
widely
utilized
methods
customizing
given.
Various
practical
applications
sensing,
stealth
technology,
solar
energy
interference
suppression
reviewed.
Finally,
some
key
challenges
feasible
solutions
DBMAs’
development
provided.
