bluuebunny/crossref_metadata_2025_split huggingface dataset:
Anomalous dynamic performance in heterogeneous Ga2O3-on-SiC MOSFETs fabricated using ion-implantation cutting process
Authors: Liu Chen-Yu , Wang Yi-Bo , Jia Xiao-Le , Xu Wen-Hui , Huang Shu-Qi , Yu Chun-Xiao , Yang Ze-Yu , Li Xiao-Xi , Li Bo-Chang , Luo Zheng-Dong , Fang Ci-Zhe , Liu Yan , You Tian-Gui , Ou Xin , Hao Yue , Han Gen-Quan 
Published: August 2024

Abstract
We present the first investigation into the dynamic characteristics of heterogeneous Ga2O3-on-SiC (GaOSiC) MOSFETs fabricated using an ion implantation process. A noteworthy aspect of this study is the intriguing impact of performance optimization behavior within the Ga2O3 layer under the quiescent drain voltage (V
D-qb) stress. In contrast to the typical electron trapping-induced current collapse, the GaOSiC MOSFET exhibited an unexpected enhancement in current under specific V
D-qb, which may be attributed to the residual hydrogen (H) induced by the ion-cutting process. By employing dynamic I-V testing, we observed conventional current collapse over a range of durations, spanning from microseconds (μs) to milliseconds (ms), under V
D-qb stress. Nevertheless, as the duration of the V
D-qb stress was extended to tens of milliseconds, an anomalous reduction in dynamic R
ON was observed. We attribute this anomalous behavior to the configuration transition of H-related defects induced by the V
D-qb stress, leading to an increased carrier concentration (n
e) in Ga2O3. This performance enhancement behavior exhibits a significantly longer time constant when compared to the electron trapping process that typically leads to conventional current collapse. The activation energy (E
a) for electron trapping in the devices subjected to milliseconds of V
D-qb stress corresponding to the conventional current collapse behavior is determined to be 0.7 eV. Furthermore, we found that, at room temperature, electron trapping predominantly occurs within the first few milliseconds of V
D-qb stress. However, at elevated temperatures, the electron trapping process extends over several tens of seconds (equivalent to thousands of V
D-qb periods), continuously degrading dynamic R
ON. Overall, our study provides novel insights into the dynamic performance of heterogeneous GaOSiC MOSFETs.
First-principles studies on the structural, elastic, electronic and optical properties of K2TiBr6 under high pressure
Authors: Shang Chenhao , Geng Zhixiang , Chen Shimin , Chen Limin , Yang Cheng , Wei Chao , Liu Chunsheng , Xie Qiyun 
Published: August 2024

Abstract
Based on first-principles calculations, the structural, mechanical, electronic, and optical properties of K2TiBr6, an ordered double perovskite with numerous titanium base positions, are investigated under pressure conditions from 0 to 150 GPa. This research seeks to thoroughly study the changes in physical properties caused by pressure and evaluate the applicability of the compound in optoelectronic applications. The structural characteristic fits well with published earlier research. A higher interaction between atoms is also a result of the significant drop in lattice characteristics. From the analysis of elastic constants, the material has mechanical stability and good toughness when pressurized. The band structure demonstrates that K2TiBr6 is a direct band gap semiconductor with 1.749 eV at 0 GPa. The band gap decreases with increasing pressure until 110 GPa. After 110 GPa, it remains at 0 eV, indicating that the material undergoes a phase transition and becomes the conductor. Meanwhile, we also investigate the optical properties of K2TiBr6 by calculating the dielectric function ε(ω), absorption coefficient α(ω), reflectance R(ω), energy loss spectrum L(ω), and complex refractive index N(ω), respectively. Those spectra are sensitive to pressure. Generally, the low-energy peaks are red-shifted, and the high-energy peaks are blue-shifted. In particular, the pressure increases the absorption of the material at UV and reduces the energy loss in the visible light range. In summary, this work highlights that K2TiBr6 may have potential applications in ultraviolet devices and energy-conversion optoelectronic devices.
Significance of wire mesh reinforcement on carbon and glass fiber composite – a review
Authors: A Venkat Ramanan , G Rajamurugan 
Published: August 2024

Abstract
A recent advancement in composite materials involves integrating wire mesh with glass and carbon fibers, with the goal of significantly enhancing mechanical characteristics and machining efficiency. The article offers a comprehensive review of recent developments in material performance, surface treatments, and machining parameters, while examining the synergistic impacts of incorporating wire mesh into carbon and glass fiber-reinforced composites. Significant attention is given to the effects of wire mesh on tensile strength and flexural characteristics, as well as optimizing surface treatments to improve interfacial bonding and durability. Moreover, the paper discusses challenges and advancements in drilling and machining these hybrid composites, focusing specifically on parameters such as feed rate, cutting speed, and tool wear. Machining performance is evaluated using metrics such as surface roughness, delamination, and tool lifespan, accompanied by a detailed analysis of how wire mesh architecture influences composite behavior under various machining conditions. The ultimate objective of this synthesis is to establish a stage for the development of next-generation composites with improved mechanical characteristics and machining capabilities, which can successfully satisfy changing needs in structural, automotive, and aerospace applications.
Reply to Comment on ‘Reversible superconducting-normal phase transition in a magnetic field: the energy-momentum balance including the velocity field of the Berry connection from many-body wave functions’
Authors: Koizumi Hiroyasu 
Published: August 2024

Abstract
Nikulov commented that the latent heat is not included in our paper (2024 Physica Scripta 99 015952); it is included although we did not use it. His comment is based on the Helmholtz free energy with controlling variables T and B (T is the temperature of the sample and B is the magnitude of the magnetic field B); however, the relevant energy is the Gibbs free energy in the experimental situation where controlling variables are T and H (H is the magnitude of the applied magnetic field H); and our paper is based on it. His idea of the latent heat is not correct; it arises from the discontinuity of the derivative on the free energy with respect to temperature at the phase transition point, and related to the difference of entropies in the superconducting and normal phases; our theory includes it, although we did not use it. The Joule heating problem is actually the lack of the mechanism in the standard theory that enables reversible disappearance of the supercurrent during the superconducting to normal phase transition in a magnetic field. A new theory put forward by us has it; besides, it preserves the major results of the BCS theory. It may be a theory encompasses the BCS one.
A new four-valued memristive hyperchaotic system with hidden attractors and multistability
Authors: Li Jingjing , Yu Tingting , Zhu Fengjuan , Fang Yuxiang , Li Xianli 
Published: August 2024

Abstract
A four-valued memristor is designed based on the memristor model and introduced into a three-dimensional chaotic system to construct a four-dimensional four-valued memristive chaotic system, and its dynamics are investigated and discussed. The properties of the system such as phase diagrams, Poincaré map, dissipation, equilibrium points stability, Lyapunov exponents, Lyapunov dimensions, dynamical complexity, offset boosting, inversion properties, and attractor coexistence are investigated. The system is found to have infinitely many equilibrium points with hidden attractors, and has higher dimensionality, and complexity than the original system. As the parameters change, the new system transitions from a quasi-periodic state to a chaotic state to a hyperchaotic state and finally back to a quasi-periodic state through a reverse period-doubling bifurcation. The complexity of the system is verified using the

C

0

algorithm and the spectral entropy algorithm. The offset boosting control of the system can be realized by adding parameters to the system. The system also has phase reversal characteristics of a single parameter control system attractor, and there are multiple types of attractors coexisting with changes in the system parameters at different initial values. In addition, when the parameters of the system are fixed, the existence of exterme multistability based on the initial value of

w

0

the memristor is found. Finally, the feasibility of the design and the correctness of the analysis are verified by simulated circuits. Therefore, the system is highly complex and can be applied in the fields of image encryption and confidential communication.
Terahertz field generation in a self-sustained magnetic laser-plasma channel
Authors: Gurjar Mukesh Chand , Gupta Devki Nandan 
Published: August 2024

Abstract
We theoretically investigate the terahertz field excitation from a laser-driven self-sustained magnetized plasma channel. The expulsion of plasma electrons by the laser ponderomotive force modifies the plasma density, which self-focuses the laser pulse. For the optimized laser parameters, the laser propagates without diverging in plasma and a plasma channel is created. The magnetic field applied along the laser propagation enhances the channel formation efficiency. We utilize this magnetic plasma channel to excite the transverse radiation field by the self-focused laser via wakefield excitation. The magnetic plasma channel maintains the laser intensity over a larger propagation distance, exciting wakefields efficiently. The second order perturbation technique is applied to calculate the wakefield components excited by the laser pulse in a self-sustained magnetic plasma channel. The density perturbation associated with the low-frequency ponderomotive force derives the transverse nonlinear current at terahertz frequency. Our results show that the magnetic field plasma channel can significantly enhance the terahertz conversion efficiency. The tunable terahertz radiation fields of 20 THz frequency with about 10 GV/m may be obtained using one Tesla magnetic field. The efficiency of the process may be optimized and controlled by the laser and plasma parameters. These high-field THz may be useful in various applications such as ultra-fast technology.
Bright soliton dynamics for resonant nonlinear Schrödinger equation with generalized cubic–quintic nonlinearity
Authors: Bao 鲍 Keyu 柯宇 , Tang 唐 Xiaogang 晓刚 , Wang 王 Ying 颖 
Published: August 2024

Abstract
For systems modeled by the resonant nonlinear Schrödinger equation (RNLSE) with generalized cubic–quintic nonlinearity, we derive the bright soliton solution of the equation in (1+1) dimensions, using the modified F-expansion method along with the novel ansatz of F-base function. Furthermore, we extend the analytical study of soliton dynamics to higher (2+1) and (3+1) dimensions by using the self-similar method, and demonstrate the soliton behavior via graphical illustration. Moreover, we investigate the effect of the resonance term on bright soliton solution in (1+1) dimensions. Additionally, we consider the nonlinear equation models with perturbation terms and derive the bright soliton solutions for the one-dimensional (1D) to three-dimensional (3D) cases. The theoretical results derived can be used to guide the experimental studies and observations of bright solitons in systems described by RNLSE model.
Reduction of turbulence by enhanced low-frequency zonal flow-like structures in HL-2A edge plasmas
Authors: Chen X. , Cheng J. , Xu Y. , Yan L.W. , Zou Q. , Huang Z.H. , Chen J. , Liu L. , Wang W.C. , Zhang W. , Wu N. , Dong C.F. , Shi Z.B. , Ji X.Q. , Zhong W.L. 
Published: August 2024

Abstract
A low-frequency zonal flow-like (LFZF-like) structure peaking at f ≈ 2.0 kHz has been observed in HL-2A ohmically heated deuterium plasmas using a combined Langmuir probe array. This time-varying potential structure, which has axisymmetric characteristics (n = 0) and a finite radial correlation length (less than 1 cm), was identified to be generated by the three-wave interaction in small-scale turbulence. The results illustrate that the amplitude of the LFZF-like structure dramatically increases with the influence of impurity ions, which is mainly due to the increased strength in the nonlinear energy transfer by the turbulence vortex symmetry-breaking process. Consequently, the enhanced LFZF-like structure has the ability to stabilize the local turbulence via the shearing decorrelation mechanism as demonstrated in this experiment. The observed results given here reveal the essential role played by the LFZF-like structure in the reduction of turbulence levels, which could advance our understanding of the multi-scale physics governing turbulence and the resulting transport in magnetically confined plasmas.
Boundary symmetry breaking of flocking systems
Authors: Lenzini Leonardo , Fava Giuseppe , Ginelli Francesco 
Published: August 2024

Abstract
We consider a flocking system confined transversally between two infinite reflecting parallel walls separated by a distance

L
⊥

. Infinite or periodic boundary conditions are assumed longitudinally to the direction of collective motion, defining a ring geometry typical of experimental realizations with flocking active colloids. Such a confinement selects a flocking state with its mean direction aligned parallel to the wall, thus breaking explicitly the rotational symmetry locally by a boundary effect. Finite size scaling analysis and numerical simulations show that confinement induces an effective mass term

M
c

∼

L
⊥

−
ζ

(with positive ζ being equal to the dynamical scaling exponent of the free theory) suppressing scale free correlations at small wave-numbers. However, due to the finite system size in the transversal direction, this effect can only be detected for large enough longitudinal system sizes (i.e. narrow ring geometries). Furthermore, in the longitudinal direction, density correlations are characterized by an anomalous effective mass term. The effective mass term also enhances the global scalar order parameter and suppresses fluctuations of the mean flocking direction. These results suggest an equivalence between transversal confinement and driving by an homogeneous external field, which breaks the rotational symmetry at the global level.
Numerical simulation of helicopter rotor blade vertical pendulum absorbers
Authors: Hu Wei , Li Shu , Yang Minghao , Ding Mingye , Yu Yang 
Published: August 2024

Abstract
Vibration is a very common phenomenon in helicopter flight, and its main source is the combined excitation force on the paddles as they rotate. In order to attenuate this harmful phenomenon, helicopter paddles are usually fitted with vibration absorbers. The helicopter rotor blade root single pendulum vibration absorber is a typical passive control type dynamic vibration absorber, which has a better vibration absorbing function, but also has certain difficulties in dynamics analysis. In this paper, a linearized dynamics analysis of the single pendulum vibration absorber is carried out, and a dynamics model of the paddle root single pendulum vibration absorber coupled with the paddle blade is established; a typical helicopter rotor system model is constructed by using Matlab, and further modeling and simulation comparisons are carried out by using ADAMS. According to the results of simulation and analysis, the unidirectional vibration level of the rotor hub can be reduced by 85% after the paddle root single pendulum absorber is installed, and the error with the theoretical analysis results is small, which has a better effect and application prospect.
Design and simulation of the fuzzy PID control system for PMSM
Authors: Qiu Jingzhi 
Published: August 2024

Abstract
Conventional PID-based permanent magnet synchronous motor (PMSM) control has problems such as long regulation time, large overshoot, and poor adaptability. Therefore, a closed-loop SVPWM control system based on FLC and PID is usedin this paper. The system can improve both the speed and significantly reduce the amount of overshooting. The two inputs to the FLC are the rotation speed error and the rate of change of error for the rotor or spindle. The fuzzy controller performs inference and defuzzification according to the MF and fuzzy rules. This logic algorithm finally outputs a signal to achieve FLC control. A Fuzzy PID-based PMSM Closed-loop SVPWM Control System is modeled and simulated in MATLAB/Simulink. In the simulation experiment, after comparing and analyzing with the traditional PID control under different working conditions, the following conclusions are obtained: the PMSM controller based on FLC and PID has the following strengths: fast reaction, negligible overshoot, and greater resilience to change compared to the conventional PID algorithm.
Matching Parameters for Vapor Deposition Process of Parylene C
Authors: Xiaogang Tong , Qiangqiang Liu , Xianguang Zeng , Yuting Chen 
Published: August 2024

Abstract
DSC and DTG curves of Parylene C were determined by 5K/min, 10K/min, 15K/min, and 20K/min heating rates. The optimal sublimation temperature, cleavage temperature, polymerization temperation and pressure were obtained via DSC/DTG curves, thermodynamic theory and quantum chemical theory. It was constructed that are the dimer sublimation, cleavage and polymerization models. The process parameters were matched for Parylene C through the sublimation, cleavage and polymerization rate computing. Subsequently, the experiments were conducted to prove it. The result shows that the efficiency of film formation has significantly raised, such as the film formation rate increasing by 57%, and the film formation time was reduced by more than 50%; The film purity was lowerd accordingly, the film quantity was significantly raised.
A generalised entropic measure of steering using Tsallis entropies and the relationship with existent steering criteria
Authors: Piceno-Martínez A Elena , Rosales-Zárate Laura E C 
Published: August 2024

Abstract
EPR steering is an asymmetric quantum correlation, as such, it is an important resource for quantum information protocols, like those used in quantum key distribution that are of tremendous relevance nowadays. The security of the aforementioned protocols can be shown by using entropic uncertainty measures, which are based on quantum information quantities, among which the entropies are found. In this work, we propose an entropic measure of steering, starting from the detection of steering given in a previous entropic uncertainty relation-based criterion, as well as using a generalised entropy, the Tsallis entropies. We define the entropic measure of steering in terms of an indicator, a quantity depending on the entropies of the measurements of the system, which assigns a value to the steering content of quantum states, while also comprising the asymmetry property of steering. We investigate the properties of the proposed quantity as a measure of steering and its asymmetry and show how it can be used for specific examples. For instance, a class of noisy two-qubit states that includes the Werner states is used to demonstrate the potential of such a proposal. Furthermore, a comparison is also made with the detection of steering in these states using existing steering criteria and the amount of steering a geometric measure for the Werner state gives.
Adapting Critical Time Intervention for Residential Substance Use Treatment
Authors: Manuel Jennifer I , Israel Khadija , Yuan Yeqing , Esquivel Laura I , Curran Laura , Herman Daniel B 
Published: August 2024

Abstract
Residential detoxification programs and other forms of intensive treatment for substance misuse problems are often followed by failure to successfully engage with follow-up services and supports, leading to frequent relapse. These problems are exacerbated among persons with dual diagnoses of substance use and mental health disorders due to the challenges inherent in navigating sequential or parallel mental health and substance abuse services. Although several linkage interventions have been developed specifically for substance abuse residential treatment programs, their efficacy has been limited. This chapter describes a pilot effort that tested Critical Time Intervention (CTI) as a strategy to help enhance continuity of support for persons with substance use problems following residential treatment for substance misuse problems. Preliminary findings indicate that CTI contributed to an improved likelihood of receiving post-discharge treatment, suggesting that it is a potentially useful model to provide re-entry services for persons transitioning from residential substance use treatment.
Process evaluation of a New psychosocial goal-setting and manualised support intervention for Independence in Dementia (NIDUS-Family)
Authors: Wyman Danielle , Butler Laurie T , Morgan-Trimmer Sarah , Bright Peter , Barber Julie , Budgett Jessica , Walters Kate , Lang Iain , Rapaport Penny , Banks Sara , Palomo Marina , Orgeta Vasiliki , Livingston Gill , Rockwood Kenneth , Lord Kathryn , Manthorpe Jill , Dow Briony , Hoe Juanita , Cooper Claudia 
Published: August 2024

Abstract

Introduction
We report a mixed-methods process evaluation embedded within a randomised controlled trial. We aimed to test and refine a theory of change model hypothesising key causal assumptions to understand how the New Interventions for Independence in Dementia Study (NIDUS)-Family (a manualised, multimodal psychosocial intervention), was effective relative to usual care, on the primary outcome of Goal Attainment Scaling (GAS) over 1 year.

Methods
In 2021–2022, intervention-arm dyads completed an acceptability questionnaire developed to test causal assumptions. We conducted qualitative interviews with dyads and intervention facilitators, purposively selected for diverse follow-up GAS scores. We collected observational data from intervention session recordings. We thematically analysed data, then integrated qualitative and quantitative data.

Results
174/204 (85.3%) dyads allocated to NIDUS-Family, fully completed it, 18 partially completed, while 12 received no intervention. We interviewed 27/192 (14%) of dyads receiving any sessions, and 9/10 facilitators; and observed 12 sessions. 47/192 (24.5%) of carers completed the acceptability questionnaire. We identified four themes: (A) ‘Someone to talk to helps dyads feel supported’; (B) ‘NIDUS-Family helps carers change their perspective’; (C) ‘Personalisation helps people living with dementia maintain their identity’ and (D) ‘Small steps help dyads move forward’.

Conclusion
Key causal pathway mechanisms were: a respectful, trusting and impartial relationship with the facilitator: supporting the development of meaningful goals and support to find manageable solutions. Core implementation factors were delivery of the modules from a consistent facilitator across regular sessions. Core contextual factors influencing these mechanisms were dyadic participation and understanding of abilities.