Physical Chemistry Chemical Physics,
Journal Year:
2024,
Volume and Issue:
26(11), P. 8993 - 9004
Published: Jan. 1, 2024
The
device
offers
robustness
and
polarization
insensitivity,
providing
versatility
adaptability
in
various
applications
environmental
conditions
with
its
two
absorption
modes
total
reflector,
which
can
be
flexibly
switched.
Communications in Theoretical Physics,
Journal Year:
2024,
Volume and Issue:
76(6), P. 065701 - 065701
Published: April 7, 2024
Abstract
This
study
introduces
an
innovative
dual-tunable
absorption
film
with
the
capability
to
switch
between
ultra-wideband
and
narrowband
absorption.
By
manipulating
temperature,
can
achieve
multi-band
within
30–45
THz
range
or
spanning
30–130
THz,
rate
exceeding
0.9.
Furthermore,
structural
parameters
of
are
optimized
using
particle
swarm
optimization
(PSO)
algorithm
ensure
optimal
response.
The
response
is
primarily
attributed
coupling
guided-mode
resonance
local
surface
plasmon
effects.
film’s
symmetric
structure
enables
polarization
incoherence
allows
for
tuning
through
various
means
such
as
doping/voltage,
temperature
parameters.
In
case
a
response,
exhibits
good
sensitivity
refractive
index
changes
in
multiple
modes.
Additionally,
spectrum
remains
effective
even
at
large
incidence
angles,
making
it
highly
promising
applications
fields
biosensing
infrared
stealth.