ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(2), P. 2736 - 2755
Published: Dec. 31, 2024
Low-dimensional
materials
(LDMs)
with
unique
electromagnetic
properties
and
diverse
local
phenomena
have
garnered
significant
interest,
particularly
for
their
low-energy
responses
within
the
terahertz
(THz)
range.
Achieving
deep
subwavelength
resolution,
THz
nanoscopy
offers
a
promising
route
to
investigate
LDMs
at
nanoscale.
Steady-state
has
been
demonstrated
as
powerful
tool
investigating
light–matter
interactions
across
boundaries
interfaces,
enabling
insights
into
physical
such
localized
collective
oscillations,
quantum
confinement
of
quasiparticles,
metal-to-insulator
phase
transitions
(MITs).
However,
tracking
ultrafast
nonequilibrium
dynamics
remains
challenging.
Ultrafast
nanoscopy,
femtosecond
temporal
provides
direct
pathway
manipulate
motion
of,
example,
charges,
currents,
carriers
ultrashort
time
scales.
In
this
review,
we
focus
on
recent
advances
in
LDMs,
particular
emphasis
interaction.
We
provide
concise
overview
suggest
future
research
directions
impactful
field
interdisciplinary
science.
Water Research,
Journal Year:
2024,
Volume and Issue:
261, P. 122042 - 122042
Published: July 4, 2024
Minimizing
sludge
generation
in
activated
systems
is
critical
to
reducing
the
operational
cost
of
wastewater
treatment
plants
(WWTPs),
particularly
for
small
where
bioenergy
not
recovered.
This
study
introduces
a
novel
acidic
technology
situ
yield
reduction,
leveraging
acid-tolerant
ammonia-oxidizing
bacteria
(Candidatus
Nitrosoglobus).
The
observed
(Y
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(38)
Published: Aug. 2, 2024
Abstract
Photonic
metasurfaces
offer
exceptional
control
over
light
at
the
nanoscale,
facilitating
applications
spanning
from
biosensing,
and
nonlinear
optics
to
photocatalysis.
Many
metasurfaces,
especially
resonant
ones,
rely
on
periodicity
for
collective
mode
form,
which
makes
them
subject
influences
of
finite
size
effects,
defects,
edge
have
considerable
negative
impact
application
level.
These
aspects
are
important
quasi‐bound
state
in
continuum
(BIC)
is
highly
sensitive
perturbations
due
high‐quality
factors
strong
near‐field
enhancement.
Here,
formation
quasi‐BIC
individual
resonator
level
using
scattering
scanning
optical
microscopy
(s‐SNOM)
combination
with
a
new
image
processing
technique,
quantitatively
investigated.
It
found
that
formed
minimum
10
×
10‐unit
cells
much
smaller
than
expected
far‐field
measurements.
Furthermore,
it
shown
coupling
direction
resonators,
defects
states
pronounced
influence
mode.
This
study
serves
as
link
between
responses
offering
crucial
insights
optimizing
spatial
footprint
active
area,
holding
promise
augmenting
such
catalysis
biospectroscopy.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(9)
Published: Aug. 26, 2024
The
measurement
of
the
spatial
distribution
nearly
monocyclic
terahertz
(THz)
fields
by
a
raster
scanning
diaphragm
is
widely
used
approach
in
THz
pulse
time-domain
holography
(PTDH)
applied
imaging,
optical
component
design,
and
wavefront
sensing
tasks.
However,
it
historically
plagued
compromise
between
balance
signal-to-noise
ratio
(SNR)
resolution.
To
address
this
challenge
keep
both
parameters
at
high
level,
we
proposed
to
replace
aperture
with
module
containing
conjugated
lens.
This
solution
allowed
us
for
first
time
experimentally
investigate
spatio-temporal
dynamics
Gauss–Bessel
beam
generated
widespread
low-energy
system
based
on
femtosecond
laser
energy
around
dozen
nanojoules
repetition
rate
tens
megahertz.
In
particular,
observe
temporal
spectrum
field
periphery
SNR
≈0.5,
which
was
not
possible
using
conventional
system.
A
careful
numerical
analysis
reveals
signal
enhancement
spectral
domain
approximately
2.5
times
compared
PTDH
scan
detection
employing
only
diaphragm.
Moreover,
have
shown
that
given
ensures
profiles
remain
unaffected
quadratic
phase
aberration
experienced
single
aperture.
The Journal of Chemical Physics,
Journal Year:
2025,
Volume and Issue:
162(6)
Published: Feb. 10, 2025
An
enhanced
mechanism
is
proposed
for
the
large-amplitude-motion-induced
parity-violating
frequency
by
integrating
exact
quantum
dynamics
method
with
relativistic
electronic
structure
theory.
The
torsional
wavefunctions
and
(PV)
shifts
are
obtained
using
method.
potential
energy
curve
PV
along
coordinates
calculated
extended
atomic
mean-field
two-component
Hamiltonian.
predicted
shift
transition
of
CFClBrOH
∼100
times
larger
than
that
conventional
C–F
stretching
mode
CHFClBr.
maximum
(3.2
Hz)
in
CHBrIOH
molecule.
Applied Physics Reviews,
Journal Year:
2025,
Volume and Issue:
12(1)
Published: March 1, 2025
Developing
new
organic
crystals
for
efficient
broad
terahertz
(THz)
wave
generation
remains
challenging,
as
multiple
critical
material
properties
must
be
achieved
simultaneously
within
a
single
crystal.
In
this
work,
we
introduce
series
of
nonlinear
optical
salt
tailored
THz
generators.
The
newly
designed
fluorinated
cationic
chromophore,
6-fluoro-2-(4-hydroxystyryl)-1-methylquinolinium
(OH6FQ),
has
been
incorporated
with
various
or
non-fluorinated
anions
into
six
different
ionic
crystals.
Notably,
the
tetrafluorinated
crystals,
composed
OH6FQ
cations
and
trifluorinated
anions,
meet
essential
requirements
generation,
including
large
macroscopic
nonlinearity,
optimal
facet
orientation
in
as-grown
mm-size,
plate-like
morphology,
relatively
low
absorption
across
both
entire-molecular
phonon
anion-stretching
vibration
regions.
These
exhibit
over
20
times
higher
optical-to-THz
amplitude
conversion
efficiency
compared
to
inorganic
ZnTe,
bandwidth
extending
up
16
THz.
To
best
our
knowledge,
is
first
report
showing
promising
potential
diverse
photonic
applications.
