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.
Nano Letters,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 5, 2025
Two-dimensional
semiconductors
and
their
moiré
superlattices
have
emerged
as
important
platforms
for
investigating
correlated
electrons.
However,
many
key
properties
of
these
systems,
such
the
frequency-dependent
conductivity,
remain
experimentally
inaccessible
because
mesoscopic
sample
size.
Here
we
report
a
technique
to
directly
measure
complex
conductivity
electrostatically
gated
two-dimensional
in
terahertz
frequency
range.
Applying
this
WSe2
monolayer
encapsulated
hBN,
observe
clear
Drude-like
response
between
0.1
1
THz,
density
range
challenging
access
even
DC
transport.
Our
work
opens
new
avenue
studying
tunable
van
der
Waals
heterostructures
using
spectroscopy.
Water Research X,
Journal Year:
2024,
Volume and Issue:
24, P. 100240 - 100240
Published: July 24, 2024
Wastewater
treatment
plants
produce
large
amounts
of
sludge
requiring
stabilization
before
safe
disposal.
Traditional
biological
approaches
are
cost-effective
but
generally
require
either
an
extended
retention
time
(10-40
days),
or
elevated
temperatures
(40-80
°C)
for
effective
pathogens
inactivation.
This
study
overcomes
these
limitations
via
a
novel
acidic
aerobic
digestion
process,
leveraging
acid-tolerant
ammonia-oxidizing
bacterium
(AOB)
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
124(24)
Published: June 10, 2024
While
terahertz
(THz)
technology
offers
a
variety
of
applications
in
medical
diagnosis,
nondestructive
testing,
and
quality
control,
its
acceptance
these
practical
fields
is
hampered
by
the
absence
endoscopic
systems,
capable
sensing
complex
refractive
index
hard-to-access
objects.
In
this
paper,
we
develop
THz
endoscope
based
on
hollow-core
antiresonant
waveguide,
formed
polytetrafluoroethylene
(PTFE)-coated
sapphire
tube
with
outer
end
closed
monolithic
window.
The
attached
to
backward
wave
oscillator
spectrometer
measure
sample
reflectivity.
By
studying
well-known
liquid
solid
samples,
demonstrate
that
analysis
Fabry–Pérot
resonance
measured
reflection
spectra
makes
it
possible
quantify
an
analyte.
Thanks
advanced
chemical
inertness
thermal
strength
PTFE,
developed
operation
harsh
environments,
which
broadens
range
applications.
Our
findings
pave
way
for
use
number
demanding
fields.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(44), P. 30626 - 30637
Published: Oct. 21, 2024
Silicon-based
microdevices
are
considered
promising
candidates
for
consolidating
several
terahertz
technologies
into
a
common
and
practical
platform.
The
practicality
stems
from
the
relatively
low
loss,
device
compactness,
ease
of
fabrication,
wide
range
available
passive
active
functionalities.
Nevertheless,
typical
footprints
limited
by
diffraction
to
hundreds
micrometers,
which
hinders
emerging
nanoscale
applications
at
frequencies.
While
metallic
gap
modes
provide
confinement,
efficiently
coupling
them
is
difficult.
Here,
we
present
experimentally
demonstrate
strategy
interfacing
subterahertz
radiation
(λ
=
1
mm)
waveguide
formed
nanogap,
etched
in
gold
film,
that
200
nm
(λ/5000)
up
4.5
mm
long.
design
principle
relies
on
phase
matching
dielectric
nanogap
modes,
resulting
efficient
directional
between
when
they
placed
side-by-side.
Broadband
far-field
transmission
experiments
through
reveal
dip
near
designed
wavelength
due
resonant
coupling.
Near-field
measurements
surface
layer
confirm
such
accompanied
transfer
power
with
an
estimated
efficiency
∼10%.
Our
approach
interfaces
millimeter
waves
waveguides
tailored
controllable
manner,
important
implications
on-chip
nanospectroscopy,
telecommunications,
quantum
technologies.
Photonics,
Journal Year:
2024,
Volume and Issue:
11(8), P. 705 - 705
Published: July 29, 2024
During
the
process
of
terahertz
(THz)
wave
generation
via
femtosecond
laser
filamentation
in
air,
as
well
through
mixing
THz
waves
with
externally
injected
plasma
filaments,
engage
interactions
plasma.
A
characteristic
feature
this
interaction
is
modulation
radiation
spectrum
by
plasma,
which
includes
spectral
dips.
This
information
essential
for
understanding
underlying
mechanisms
THz–plasma
or
inferring
parameters.
However,
a
current
debate
exists
on
number
dips
observed
after
interaction,
different
opinions
single
versus
multiple
dips,
thus
leaving
still
ambiguous.
In
work,
we
retrospectively
analyzed
experimental
appearance
and
found
that
observations
such
are
predominantly
result
water
vapor
absorption
low
resolution.
Additionally,
altering
acquisition
width
temporal
signal
also
influenced
dips’
number.
Hence,
future
research,
simultaneous
attention
should
be
paid
to
following
two
aspects
interactions:
(1)
It
necessary
ensure
sufficiently
wide
time-domain
window
accurately
represent
dip
characteristics.
(2)
The
carefully
distinguished
from
lines
before
being
further
studied.
On
other
hand,
case
spectrum,
put
forward
new
viewpoint
resonance
between
surface
plasmon
waves,
taken
into
consideration
studies.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(43), P. 19353 - 19361
Published: Oct. 15, 2024
The
granule-based
anammox
process
has
been
reported
to
be
more
resistant
the
stress
of
antibiotics;
however,
underlying
resistance
mechanism
is
still
not
fully
understood.
In
this
study,
we
found
that
microbubbles
stably
adhered
surface
layer
granular
sludge
(AnGS,
Gs)
operating
under
long-term
sulfamethoxazole
(SMZ)
2
mg/L,
compared
in
control
reactor
(Gc).
difference
covering
content
can
up
over
three
times
(1.0
±
0.1%
vs
0.3
0.0%).
Batch
tests
showed
coverage
ratio
on
Gs
reached
approximately
32.5%,
which
significantly
reduced
SMZ
transfer
into
AnGS
due
adsorption
by
bubbles,
thus
alleviating
inhibition
bacterial
activity
36.5%.
adhesion
force
between
and
was
largely
enhanced
75.0%
Gc.
increased
hydrophobicity
extracellular
polymer
substance
(EPS,
mainly
proteins)
content,
larger
capillary
layer,
owing
unique
micronano
structure,
were
identified
as
key
factors
responsible
for
stable
Gs.
Consequently,
study
demonstrated
vital
roles
surface-adhered
resisting
shed
light
regulation
development
robust
processes.
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.
