Real-Time Detection of Yeast Growth on Solid Medium through Passive Microresonator Biosensor
Biosensors,
Год журнала:
2024,
Номер
14(5), С. 216 - 216
Опубликована: Апрель 26, 2024
This
study
presents
a
biosensor
fabricated
based
on
integrated
passive
device
(IPD)
technology
to
measure
microbial
growth
solid
media
in
real-time.
Yeast
(Pichia
pastoris,
strain
GS115)
is
used
as
model
organism
demonstrate
performance.
The
comprises
an
interdigital
capacitor
the
center
with
helical
inductive
structure
surrounding
it.
Additionally,
12
air
bridges
are
added
increase
strength
of
electric
field
radiated
by
at
same
height.
Feasibility
verified
using
capacitive
biosensor,
and
change
capacitance
values
during
detection
process
yeast
indicates
that
can
induce
changes
electrical
parameters.
proposed
IPD-based
drop-added
3
mm
medium
for
100
h
operating
frequency
1.84
GHz.
resonant
amplitude
varies
continuously
from
24
72
due
colony
height
vertical
yeast,
maximum
0.21
dB.
overall
measurement
results
also
fit
well
Gompertz
curve.
between
then
analyzed
reveals
linear
relationship
time
coefficient
determination
0.9844,
indicating
suitable
monitoring
growth.
Thus,
proved
have
potential
proliferation
detection.
Язык: Английский
Terahertz metamaterial-prism hybrid sensors for microorganisms detection
Optics Express,
Год журнала:
2024,
Номер
32(27), С. 48915 - 48915
Опубликована: Дек. 9, 2024
In
this
study,
we
developed
terahertz
(THz)
metamaterial
devices
with
attenuated
total
reflection
(ATR)
geometries
for
biosensing
applications.
This
was
achieved
by
transferring
the
patterns
fabricated
on
a
polyimide
film
to
prism-top
surface.
We
characterized
resonance
characteristics
of
metasurfaces
different
THz
wave
polarizations
and
gap
structure
orientations
in
metamaterials.
The
resonances
exhibited
sharp
compared
normal
incidence
case;
quality
factor
increased
from
3.3
6.0.
For
applications,
measured
resonant-frequency
shift
hybrid
device
depositing
yeast
cells.
sensitivity
terms
number
density
3.4
times
that
Si
substrate
under
incidence,
which
presented
4.1-fold
increase
figure
merit.
based
finite-difference
time-domain
simulations
successfully
reproduced
our
experimental
results,
including
enhanced
devices.
Язык: Английский
Mechanical Control of Polaritonic States in Lead Halide Perovskite Phonons Strongly Coupled in THz Microcavity
The Journal of Physical Chemistry Letters,
Год журнала:
2023,
Номер
14(46), С. 10318 - 10327
Опубликована: Ноя. 9, 2023
We
demonstrate
the
generation
and
control
of
polaritonic
states
in
perovskite
phonon
polaritons,
which
are
strongly
coupled
middle
a
flexible
Fabry–Perot
cavity.
fabricated
films
on
microporous
substrate
coated
with
graphene
oxide,
led
to
virtually
free-standing
film
incorporated
into
microcavity.
Rabi
splitting
was
observed
when
cavity
resonance
tune
that
phonons.
The
energy
increased
as
thickness
increased,
reaching
1.9
meV,
is
2.4-fold
higher
than
criterion
for
strong
coupling
regime.
obtained
dispersion
curves
various
thicknesses
exhibiting
two
polariton
branches;
clear
beats
between
branches
were
time
domain.
Flexible
devices
phonons
enable
macroscopic
over
through
bending
processes,
add
an
additional
degree
freedom
manipulation
devices.
Язык: Английский