bluuebunny/crossref_metadata_2025_split huggingface dataset:
Temperature controllable Goos–Hänchen shift and high reflectance of monolayer graphene induced by BK7 glass grating
Authors: Lu Delian , Shanshan Ma , Zhu Xiaojun , Da Haixia 
Published: August 2022

Abstract
BK7 glass has an unusual temperature-dependent refractive index and thickness, which provides a promising platform for uncovering the temperature-related optical phenomena and applications. Here, we theoretically demonstrate that monolayer graphene based BK7 glass grating structure has two Goos–Hänchen (GH) peaks with respective magnitudes of

2564
λ

and

1993
λ
,

and their corresponding reflectances are also high. The electromagnetic field distribution in this structure directly reveals that the enhanced GH shifts can be ascribed to the excitation of the guide mode resonances in the waveguide dielectric layer below BK7 glass grating structure and their high reflectances are granted by the constructive interferences between the reflected waves. In addition, the magnitudes of the GH peaks can be controlled by the temperature of BK7 glass as well as the chemical potential of monolayer graphene. We also evaluate the temperature sensing property of this structure based on the GH shifts and find that its maximum temperature sensitivity can be up to

5.0017
×

10

4

μ
m

°

C

−
1

.

The enhanced and controlled GH shift presented in monolayer graphene based BK7 glass grating structure shows promise for the applications, such as, optical sensors, temperature sensors, and optoelectronic detectors.
Zirconia-supported cobalt nanoparticles as high-performance sulfur cathode for lithium–sulfur batteries
Authors: He Zongke , Li Jing , Zhang Jinghan , Zhao Xinnan , Wang Xiaochen , Wan Tongtao , Wu Changcheng , Liu Guihua 
Published: August 2022

Abstract
Lithium–sulfur (Li–S) battery is now a promising technology for energy storage. However, rapid capacity decay due to sulfur dissolution and shutting effect severely limit its commercial development. In this work, a NH2-UIO-66 metal organic framework-derived porous composite (Co-ZrO2@NC) consists of nitrogen-doped carbon (NC) and zirconium oxide (ZrO2) loaded with cobalt nanoparticles was prepared. The porous NC component not only increases the accommodation of sulfur in the cathode, but also benefits the charge transfer in sulfur electrochemistry. The Co and ZrO2 would act as active centers to enhance the adsorption/conversion of lithium polysulfide and improve its electrochemical utilization. When used in sulfur cathode, the Co-ZrO2@NC electrode shows excellent electrochemical performance with an initial specific capacity of 1073 mAh g−1 at a rate of 0.2 C and a reversible capacity of 1015 mAh g−1 after 100 cycles, corresponding to a capacity retention of 94.6%. Furthermore, after 300 cycles at 1.0 C, corresponding to a capacity retention of 75.4%. Moreover, the cell also exhibits good rate performance (640 mAh g−1 at 3.0 C). Even at high sulfur loading of 4.0 mg cm−2, the S/Co-ZrO2@NC cathode is able to deliver an areal specific capacity of 4.8 mAh cm−2.
Turbulent cascades for a family of damped Szegő equations
Authors: Gérard Patrick , Grellier Sandrine , He Zihui 
Published: August 2022

Abstract
In this paper, we study the transfer of energy from low to high frequencies for a family of damped Szegő equations. The cubic Szegő equation has been introduced as a toy model for a totally non-dispersive degenerate Hamiltonian equation. It is a completely integrable system which develops growth of high Sobolev norms, detecting transfer of energy and hence cascades phenomena. Here, we consider a two-parameter family of variants of the cubic Szegő equation and prove that, adding a damping term unexpectedly promotes the existence of turbulent cascades. Furthermore, we give a panorama of the dynamics for such equations on a six-dimensional submanifold.
Global unique solvability of inhomogeneous incompressible Navier–Stokes equations with nonnegative density
Authors: Zhang Jianzhong , Shi Weixuan , Cao Hongmei 
Published: August 2022

Abstract
In this paper, we consider the initial-boundary value problem to the inhomogeneous incompressible Navier–Stokes equations in

Ω
⊂

R

2

. The initial density is allowed to be nonnegative, and in particular, the initial vacuum is allowed. The global existence and uniqueness of solutions are proved, for any initial data

(

ρ

0

,

u

0

)

∈

L

∞

×

H

0

s

with s > 0, which constitutes a positive answer to the question raised by Danchin and Mucha (2019 Commun. Pure Appl. Math.
72 1351–85), in which the initial velocity

u

0

∈

H

0

1

(see also Li (2017 J. Differ. Equ.
263 6512–36).
Reducibility of 1D quantum harmonic oscillator with decaying conditions on the derivative of perturbation potentials
Authors: Liang Zhenguo , Wang Zhiqiang 
Published: August 2022

Abstract
We prove the reducibility of 1D quantum harmonic oscillators in

R

perturbed by a quasi-periodic in time potential V(x, ωt) under the following conditions, namely there is a C > 0 such that

|
V

(

x
,
θ

)

|
⩽
C
,

|
x

∂

x

V

(

x
,
θ

)

|
⩽
C
,

∀

(

x
,
θ

)

∈
R
×

T

σ

n

. The corresponding perturbation matrix

(

P

i

j

(

θ

)

)

is proved to satisfy

(

1
+
|
i
−
j
|

)

|

P

i

j

(

θ

)

|
⩽
C

and

i
j

|

P

i
+
1

j
+
1

(

θ

)

−

P

i

j

(

θ

)

|
⩽
C

for any

θ
∈

T

σ

n

and i, j ⩾ 1. A new reducibility theorem is set up under this kind of decay in the perturbation matrix element

P

i

j

(

θ

)

as well as the discrete difference matrix element

P

i
+
1

j
+
1

(

θ

)

−

P

i

j

(

θ

)

. For the proof the novelty is that we use the decay in the discrete difference matrix element to control the measure estimates for the thrown parameter sets.
Bowen’s equations for upper metric mean dimension with potential
Authors: Yang Rui , Chen Ercai , Zhou Xiaoyao 
Published: August 2022

Abstract
Firstly, we introduce a new notion called induced upper metric mean dimension with potential, which naturally generalises the definition of upper metric mean dimension with potential given by Tsukamoto to more general cases, then we establish variational principles for it in terms of upper and lower rate distortion dimensions and show there exists a Bowen’s equation between induced upper metric mean dimension with potential and upper metric mean dimension with potential. Secondly, we continue to introduce two new notions, called BS metric mean dimension and packing BS metric mean dimension on arbitrary subsets, to establish Bowen’s equations for Bowen upper metric mean dimension and packing upper metric mean dimension with potential on subsets. Besides, we also obtain two variational principles for BS metric mean dimension and packing BS metric mean dimension on subsets. Finally, the special interest about the Bowen upper metric mean dimension of the set of generic points of ergodic measures are also involved.
Electromagnetic and fast ions effects as a key mechanism for turbulent transport suppression at JET
Authors: Garcia J 
Published: August 2022

Abstract
JET has provided a test bed over the last ten years for detailed studies of the influence of electromagnetic (EM) and fast ion effects on transport, turbulence and energy confinement. This paper reviews the important synergy between experimental results and high performance computing simulations, which has allowed to unveil the extraordinary role of EM and fast ion effects to reduce or even suppress ion heat transport. These results are essential to understand future DT burning plasmas dominated by fusion born alpha particles.
Doublet splitting of fusion alpha particle driven ion cyclotron emission
Authors: Cook J W S 
Published: August 2022

Abstract
Ion cyclotron emission (ICE) originating from confined populations of fast ions in toroidal fusion plasmas is an important non-invasive, passive diagnostic for current and next-generation devices. The ability to model ICE signals accurately is an essential step towards inferring the characteristics of confined energetic alpha particles or fast neutral beam ions and background plasma. In this paper, the linear growth rates of the magnetoacoustic cyclotron instability, which is the leading explanation for ICE, are calculated in high-resolution 2D

(

k
⊥

,

k
∥

)

space for parameters corresponding to JET Pulse No. 26148. These calculations further highlight the origin of doublet splitting of the cyclotron harmonics and the perceived need to invoke nonlinear interactions with 1D3V particle-in-cell studies to account for lower harmonics with substantial amplitudes. The inclusion of signals of ICE from a well-resolved range of propagation angles can also account for these effects.
Correlation between cyclic topology and shape memory properties of an amine-based thermoset shape memory polymer: a coarse-grained molecular dynamics study
Authors: Nourian Pouria , Wick Colin D , Li Guoqiang , Peters Andrew J 
Published: August 2022

Abstract
Defects in crosslinked networks have a negative effect on mechanical and functional properties. In this study, an epoxy resin diglycidyl ether of bisphenol A crosslinked by a hardener 4,4-diaminodiphenyl methane with various cyclic topologies was simulated to find correlations between the mechanical/shape memory properties (i.e. glassy/rubbery elastic modulus, shape recovery ratio, and recovery stress) and cyclic topologies (i.e. number of total loops, number of defective loops (DLs), etc). The effect of cyclic topology on shape memory properties was more significant than its effect on mechanical properties, altering recovery stress by more than 25% on average. After analyzing several topological fingerprints such as total number of loops, number of DLs, and number of higher order loops, we found that the effect of cyclic topology on the mechanical/shape memory properties of the systems can be best understood by the fraction of hardeners reacted with four distinct epoxy molecules (tetra-distinctly-reacted (TDR) hardeners). By increasing the number of TDR hardeners, the network is closer to ideal, resulting in an increase in the number of higher order loops and a reduction in the number of DLs, which in turn leads to an increase in rubbery elastic modulus and shape recovery ratio to a lesser degree, but a substantial increase in recovery stress. These results suggest that utilization of experimental techniques such as semibatch monomer addition, which leads to a more expanded and defect-free network, can result in a simultaneous increase in both shape recovery ratio and recovery stress in thermoset shape memory polymers (TSMPs). Moreover, topology alteration can be used to synthesize TSMPs with improved recovery stress without significantly increasing their stiffness.
Critical behavior and magnetic entropy change of skyrmion host Co7Zn8Mn5
Authors: Yang Xiaojun , Pan Junxiao , He Xiangyu , Liu Shijiang , Jia Hong , Cao Leiming , Yang Mao 
Published: August 2022

Abstract
The magnetic properties of a β-Mn-type alloy Co7Zn8Mn5, which is a chiral magnet hosting skyrmion phase, are comprehensively investigated, exhibiting a ferromagnetic transition around 184 K and a spin freezing near 20 K. The generated Rhodes–Wolfarth ratio equals 1.10, which indicates a weak itinerant character of the ferromagnetism in Co7Zn8Mn5. The spin dynamics of the spin freezing agrees with the universal scaling law of critical slowing down with τ
0 = 1.7 × 10−5 s, T
g = 20.2 K, and zν = 3.92. Critical exponents β = 0.423(1) and γ = 1.366(4) are deduced by the modified Arrott plot, whereas δ = 4.22(2) is obtained by a critical isotherm analysis. The validity of the deduced critical exponents is verified by the Widom scaling relation and the scaling hypothesis. The boundary between the first-order and the second-order phase transition is evaluated by a scaling analysis. The magnetic interaction, obtained by a renormalization group theory, decays with distance r as J(r) ≈ r
−4.9, lying between the mean-field model and the 3D Heisenberg model. The analyses on critical behavior could shed new light on the origin of ferromagnetism and topological Hall effect. Moreover, the magnetic entropy change −ΔS
M exhibits a maximal value around T
C, and the peak position gradually raises with an increasing fields, eliminating the mean-field model. The

−
Δ

S

M

max

features a power-law behavior with n > 2/3, excluding any universal standard models of ferromagnetism. The −ΔS
M(T, H) plots can be scaled into a universal curve, further verifying the reliability and accuracy of the yielded critical exponents.
Electronic properties of Cu2(Zn, Cd)SnS4 determined by the high-field magnetotransport
Authors: Lähderanta Erkki , Hajdeu-Chicarosh Elena , Kravtsov Victor , Shakhov Mikhail A , Stamov Vladimir N , Bodnar Ivan V , Arushanov Ernest , Lisunov Konstantin G 
Published: August 2022

Abstract
Resistivity, ρ(T), and magnetoresistance (MR) are investigated in the Cu2Zn1−x
Cd
x
SnS4 single crystals for compositions x ≡ Cd/(Zn + Cd) = 0.15–0.24, in the temperature range of T ∼ 50–300 K in pulsed magnetic fields of B up to 20 T. The Mott variable-range hopping (VRH) conductivity is established within wide temperature intervals lying inside ΔT
M ∼ 60–190 K for different x. The deviations from the VRH conduction, observable above and below ΔT
M, are connected to the nearest-neighbor hopping regime and to the activation on the mobility threshold of the acceptor band (AB) with width W ≈ 16–46 meV. The joint analysis of ρ(T) and positive MR permitted determination of other important electronic parameters. These include the localization radius, α ≈ 19–30 Å, the density of the localized states, g(μ) ≈ (1.6–21) × 1017 meV−1 cm−3 at the Fermi level μ, and the acceptor concentration, N
A ∼ (6–8) × 1019 cm−3, for various x and in conditions of different vicinity of the investigated samples to the metal–insulator transition. In addition, details of the AB structure, including positions of μ and of the mobility threshold, E
c, are found depending on the alloy composition.
Axion-like particle generation in laser-plasma interaction
Authors: Huang Shan , Shen Baifei , Bu Zhigang , Zhang Xiaomei , Ji Liangliang , Zhai Shuhua 
Published: August 2022

Abstract
The hypothetical axion and axion-like particles, feebly coupled with photon, have not yet been found in any experiment. With the improvement of laser technique, much stronger but shorter quasi-static electric and magnetic fields can be created in laboratory using laser-plasma interaction, compared to the fields of large magnets, to help the search of axion. In this article, we discuss the feasibility of ALPs exploration using planarly or cylindrically symmetric laser-plasma fields as background and an x-ray free-electron laser as probe. Both the probe and the background fields are polarized such that the existence of ALPs in the corresponding parameter space will cause polarization rotation of the probe, which can be detected with high accuracy. Besides, a structured field in the plasma creates a tunable transverse profile for the interaction and improves the signal-to-noise ratio via phase-matching mechanism. The ALP mass discussed in this article ranges from 10−3 eV to 1 keV. Some simple schemes and estimations on ALP production and polarization rotation of probe photon are given, which reveals the possibility of future laser-plasma ALP source in laboratory.
The Far Ultra-violet Background
Authors: Kulkarni S. R. 
Published: August 2022

Abstract
The diffuse far-ultraviolet (FUV) background has received considerable attention from astronomers since the 1970s The initial impetus came from the hope of detecting UV radiation from the hot intergalactic medium. The central importance of the FUV background to the physics (heating and ionization) of the diffuse atomic phases motivated the next generation of experiments. The consensus view is that the diffuse FUV emission at high latitudes has three components: stellar FUV reflected by dust grains (diffuse galactic light or DGL), FUV from other galaxies and the intergalactic medium (extra-galactic background light or EBL) and a component of unknown origin (and referred to as the “offset” component). During the 1980s, there was some discussion that decaying dark matter particles produced FUV radiation. In this paper I investigate production of FUV photons by conventional sources: line emission from Galactic Hot Ionized Medium, two-photon emission from the Galactic Warm Ionized Medium and low-velocity shocks, and Lyman-β fluorescence of hydrogen at several locales in the Solar System (the interplanetary medium, the exosphere and the thermosphere of Earth). I conclude that two thirds and arguably all of the offset component can be explained by the sum of the radiation from the processes listed above.
Predicting tungsten erosion and leakage properties for the new V-shaped small angle slot divertor in DIII-D
Authors: Sinclair G. , Maurizio R. , Ma X. , Abrams T. , Elder J.D. , Guo H.Y. , Thomas D.M. , Leonard A.W. 
Published: August 2022

Abstract
Impurity transport modeling of the new tungsten (W)-coated, V-shaped small angle slot (SAS) divertor in the DIII-D tokamak was conducted using the SOLPS-ITER plasma edge code package and the DIVIMP impurity tracking code. The inboard baffle of the current SAS divertor will be shifted closer to the outboard baffle, creating a V-corner at the slot vertex. In addition, the outboard baffle will be coated with 10–15 μm of W for experiments studying high-Z sourcing and leakage in a closed divertor. Modeling of the ‘SAS-VW’ divertor predicts that these changes to the inner baffle will reduce W gross erosion by 40× relative to the existing SAS divertor when the outer strike point (OSP) is at the V-corner and the ion B × ∇B drift is towards the divertor, driven primarily by significant cooling near the slot vertex. Most W erosion in SAS-VW is expected to occur near the slot entrance, which may pose a higher risk to core contamination than W eroded deeper in the slot. Adding a new sheath-based prompt redeposition model outlined in Guterl et al (2021 Nucl. Mater. Energy
27 100948) increases the sensitivity of redeposition estimates to near-target plasma conditions and may provide more accurate predictions of net erosion. Moving the OSP outboard from the slot vertex ∼4 cm onto the W-coated region yields a 40× increase in the gross erosion rate and a 50% decrease in the core leakage fraction. Thus slight variations in strike point location may counteract the potential benefits of the tightly-baffled V slot on minimizing erosion. This impurity transport modeling provides useful guidance for future experiments on the SAS-VW divertor focused on high-Z erosion/redeposition, scrape-off layer transport, and core leakage.
Exact hydrodynamic description of symmetry-resolved Rényi entropies after a quantum quench
Authors: Scopa Stefano , Horváth Dávid X 
Published: August 2022

Abstract
We investigate the non-equilibrium dynamics of the symmetry-resolved Rényi entropies in a one-dimensional gas of non-interacting spinless fermions by means of quantum generalised hydrodynamics, which recently allowed to obtain very accurate results for the total entanglement in inhomogeneous quench settings. Although our discussion is valid for any quench setting accessible with quantum generalised hydrodynamics, we focus on the case of a quantum gas initially prepared in a bipartite fashion and subsequently let evolve unitarily with a hopping Hamiltonian. For this system, we characterise the symmetry-resolved Rényi entropies as function of time t and of the entangling position x along the inhomogeneous profile. We observe an asymptotic logarithmic growth of the charged moments at half system and an asymptotic restoration of equipartition of entropy among symmetry sectors with deviations which are proportional to the square of the inverse of the total entropy.
Effect of the film thickness on electron stimulated desorption yield from Ti-Zr-V coating
Authors: Gao Y. , Malyshev O.B. , Valizadeh R. , Wang J. , Hannah A. , Hu Y.C. , Zhang J. , Sun Q.Y. , Si Q.Y. , Wang S. 
Published: August 2022

Abstract
With the benefits of evenly distributed pumping, low thermal outgassing rate and low photon-/electron-/ion stimulated desorption yields, non-evaporable getter (NEG) coating has been widely used in particle accelerators for many years. Our earlier work has demonstrated the different thickness of Ti-Zr-V coating in the range of 0.1–1 μm affects its pumping properties. In this study, the electron stimulated desorption (ESD) yields were studied for Ti-Zr-V coating deposited from a twisted target with its thickness less than 0.5 μm, while an uncoated sample was also measured as a reference. The ESD yields for H2, CH4, CO and CO2 were measured as a function of electron accumulated dose up to ∼2 × 1024 e-/m2 followed bakeout/activation by heating to 80, 120, 140, 180 and 250°C. After each ESD experiment the samples were full saturated with a mix of H2, CO and CO2. Both NEG coated samples demonstrate lower values in comparison to the uncoated one after heating/activation to temperatures up to 180°C for H2, up to 250°C for CH4, up to 140°C for CO and 120°C for CO2. The activation to 140°C is the most efficient way to reach lower pressure and avoid quick aging of the NEG coating. The thinner NEG coating provides a significantly lower ESD yield in comparison to the thicker one only after activation to 180°C, while their ESD yields are almost identical for each gas at the lower temperature.
Analytical scaling of Quadrupole Mass Spectrometer for Point of Care Applications
Authors: Mehta Khushbu , Minhas Ashudeep , Kaur Maninder , Bansal Deepak 
Published: August 2022

Abstract
The best way to combat a disease is its early detection. A low-cost portable point of care (POC) device is required for early disease detection. A mass spectrometer (MS) is a golden analytical technique to diagnose many diseases. Conventional mass spectrometers are bulky and costly and limited to expensive laboratory setups. In the present paper, a POC-type quadrupole mass spectrometer (QMS) system is proposed for the early detection of diseases. The main component of QMS that makes it bulky and costly is the vacuum system. The length of the quadrupole filter determines its resolution, and the vacuum level is a function of its length. Hence, both length and vacuum levels are optimized without compromising resolution. The size of the quadrupole rods is reduced to 26 mm at 0.1 pascal pressure for portable applications. This optimized QMF is designed and simulated in COMSOL Multiphysics. The system's vacuum level is designed so that a single rotary pump can serve the purpose without any turbopump. A closed-form expression for mass resolution, pressure, and frequency is also derived.
On the seasonality of long-range transport of acidic pollutants in East Asia
Authors: Chang Chung-Te , Wang Lixin , Wang Lih-Jih , Liu Chiung-Pin , Yang Ci-Jian , Huang Jr-Chuan , Wang Chiao-Ping , Lin Neng-Huei , Lin Teng-Chiu 
Published: August 2022

Abstract
East Asia currently has the largest SO2 and NO
x
emissions in the world. The long-range transport (LRT) of acidic pollutants in this region is of great concern but the extent is not well understood. Here results from combined long-term (⩾20 years) atmospheric deposition monitoring and air trajectory analysis in East Asia were reported. The results showed that despite the large decrease of SO2 and NO
x
emissions in Taiwan, annual deposition of non-sea-salt sulfate (nss-

SO

4

2
−

) in northern Taiwan showed no decreasing trend during 1994–2020. However, when divided seasonally, both nss-

SO

4

2
−

and nitrate (

NO

3
−

) deposition had a significant decreasing trend in the summer but not in the winter. Similar patterns were found for Japan and Korea. Air trajectory models in combination with a regional emission map indicate that LRT from eastern China contributed up to 70% of the winter deposition of nss-

SO

4

2
−

and

NO

3
−

in Taiwan and up to 50% in Japan and Korea. The results indicate that LRT obscured the efficacy of local pollution control measures in East Asia and suggest that transboundary air pollution regulations are required to combat acid deposition.