bluuebunny/crossref_metadata_2025_split huggingface dataset:
Direct evidence of V-V dimers existing in the metallic-phase of VO2
Authors: Park Young-Woo , Hwang In-hui , Han Sang-Wook 
Published: January 2025

Abstract
We utilized EXAFS at the V K-edge to measure V-V distances of VO2 from 40 to 110℃. The DC resistance was simultaneously measured with EXAFS. Results showed structural and metal-insulator phase transitions at 70℃ and 75℃, respectively. Below 70℃, V-V pairs were around 2.65 Å and 3.01 Å in the insulating phase, changing to about 2.85 Å and 3.02 Å in the metallic phase, respectively. V-V dimers persisted even at 110℃. VO2 maintained the M1 phase from 40 to 110℃, with some changes in local structural properties like distances and Debye-Waller factors of atomic pairs with temperature.
Inhibitory effect of streamer discharge on the local recurrence of B16F10 melanoma tumor in mice
Authors: Ito Ryuichiro , Sumitomo Ryota , Iizawa Misa , Yanai Hideyuki , Ono Ryo 
Published: January 2025

Abstract
Plasma-based cancer therapy presents a novel approach to treating oncologic diseases. One promising application is post-surgical plasma treatment to reduce the risk of local recurrence after tumor resection. However, a major challenge in the post-surgical treatment using plasma is the limited experimental evidence. This study provides in vivo evidence demonstrating that streamer discharge can significantly reduce the local recurrence rate of B16F10 melanoma tumors in mice. Ten-minute treatments of tumor resection sites reduced the recurrence rate by approximately 50%. No significant abnormalities related to plasma treatment were observed throughout the experiments. The cytotoxic effect of streamer discharge was also demonstrated in vitro, where apoptosis and necrosis were observed in B16F10 cells.&#xD;
Simultaneous tri-parameter surface plasmon resonance photonic crystal fiber sensor
Authors: Wang Yuan , Ge Zihui , Liu Jietao , Song Guofeng 
Published: January 2025

Abstract
This study presents a photonic crystal fiber (PCF) integrated with a surface plasmon resonance (SPR) sensor that utilizes two orthogonal polarization core modes for sensing. The PCF features a thin indium tin oxide (ITO) layer on the inner channel and lower polished surface, an upper polished surface with a thin gold film, and an inner channel filled with magnetic fluid (MF) for magnetic field detection. Additionally, a temperature and refractive index sensitive material polydimethylsiloxane (PDMS) is placed on the lower polished surface, while the upper polished surface is designed for refractive index measurement. This multifunctional PCF-SPR sensor offers a compact and efficient solution for simultaneous detection of magnetic fields, temperature, and refractive index variations. The highest magnetic field sensitivity in the range of 0~12Oe is 11.1nm/Oe, the highest temperature sensitivity in the range of 20~400℃ is -0.5nm/℃, and the highest refractive index sensitivity in the range of 1.17~1.35μm is 1000nm/RIU. The designed sensor effectively mitigates the cross-sensitivity issues during concurrent measurements of the magnetic field, temperature, and refractive index simultaneously, presenting significant potential for applications in complex environment, including mineral resource exploration, geological and environmental assessments.&#xD;
Thickness-dependence of the in-plane thermal conductivity and the interfacial thermal conductance of supported MoS2
Authors: Melo Henrique Felipe , Brant Juliana , Guimaraes Paulo 
Published: January 2025

Abstract
Nowadays, experimental research advances in condensed matter physics are deep-rooted in the development and manipulation of nanomaterials, making it essential to explore the fundamental properties of materials that are candidates for nanotechnology. In this work, we study the dependence of the molybdenum disulfide (MoS2) Raman modes on the sample temperature and on the excitation laser power. From the correlation between these two sets of measurements, we determine the planar thermal conductivity of MoS2 monolayers, bilayers, trilayers, four layers, seven layers, and eight layers. We find a nonmonotonic behavior, with the thermal conductivity decreasing from 38 Wm−1K−1 to 24 Wm−1K−1, going from monolayer to trilayers, and then increasing from 24 Wm−1K−1 to 50 Wm−1K−1 when the thickness increases from three to eight layers. We associate this behavior with a convolution of two different phonon scattering processes: boundary scattering and interlayer scattering. We also report a monotonic thickness dependence of the interfacial thermal conductance of n-layers of MoS2 on SiO2/Si, which ranges from 0.9 MWm−2K−1 for a monolayer to 3.2 MWm−2K−1 for eight layers films.&#xD;
Anomalous pumping in the non-Hermitian Rice-Mele model
Authors: Kumar Abhishek , mazumdar sarbajit , Mahanti S D , Saha Kush 
Published: January 2025

Abstract
We study topological charge pumping (TCP) in the Rice-Mele (RM) model with irreciprocal hopping. The non-Hermiticity gives rise to interesting pumping physics, owing to the presence of skin effect and exceptional points. In the static one-dimensional (1D) RM model, we find two independent tuning knobs that can drive the topological transition, namely, non-Hermitian parameter $\gamma$ and system size $N$. To elucidate the system-size dependency, we use a finite-size generalized Brillouin zone (GBZ) scheme to show that the edge modes can be distinguished from the non-hermiticity induced skin modes. Moreover, this scheme can capture the state pumping of topological edge modes as a function of $\gamma$ in the static 1D RM model and it further provides insight into engineering novel gapless exceptional edge modes with the help of adiabatic drive. Furthermore, we show that the standard topological pumping due to the adiabatic and periodic variation of the model parameters survives even with finite $\gamma$. However, we observe that it depends upon the driving protocols and strength of the non-Hermiticity ($\gamma$). With increasing $\gamma$, the adiabatic pumping for non-trivial protocols is destroyed first and then re-emerges as an anomalous pumping which does not have any Hermitian counterpart. Additionally, we observe that even a trivial adiabatic protocol can give rise to pumping as opposed to the Hermitian system. This is attributed to the inherent point gap physics of non-Hermitian system which we explain by reformulating a non-Bloch topological invariant for the 1+1D RM model. This invariant explains the number of pumped charges (in each period) for all the driving protocols.
Research on Composite Strain and Stress Sensors Based on Piezoresistive and Triboelectric Effects
Authors: Li Hu , Yang Li , wang zhihua 
Published: January 2025

Abstract
In view of the problems that robotic arms find it difficult to effectively identify and grasp workpieces with different textures and hardness in complex industrial environments, and the low path planning accuracy of robotic arms in practical application scenarios, this paper proposes a composite sensor based on piezoresistive effect and triboelectric effect. The piezoresistive sensor and the triboelectric sensor simultaneously generate output signals, and the identification of different achieves high-precision dynamic monitoring of the robotic arm's gripping objects and joint movements. The base material of the piezoresistive sensor and the negative electrode material of the triboelectric sensor are both porous MXene/PDMS structures. The piezoresistive sensor enhances its conductivity by spin-coating CNT slurry on the surface of the base material and uses PVA hydrogel as the electrode. The triboelectric sensor uses copper as the positive electrode material. Experiments show that the developed sensor has a measurement range (0.015 kPa-70 kPa) and good repeatability. The experiment verifies that the composite sensor can be applied to the high-precision detection of robotic arm's flexible gripping and joint movements.&#xD;
Infrared photoresponse of GeSiSn p-i-n photodiodes based on quantum dots, quantum wells, pseudomorphic and relaxed layers
Authors: Timofeev Vyacheslav Alexeyevich , Skvortsov Ilya , Mashanov Vladimir Ivanovich , Bloshkin Aleksei A , Loshkarev Ivan Dmitrievich , Kirienko Victor V , Zalyalov Timur Maratovich , Lozovoy Kirill 
Published: January 2025

Abstract
Structural and photoelectric properties of p-i-n photodiodes based on GeSiSn/Si multiple quantum dots both on Si and silicon-on-insulator (SOI) substrates were investigated. Elastic strained state of grown films was demonstrated by x-ray diffractometry. Annealing of p-i-n structures before the mesa fabrication can improve the ideality factor of current-voltage characteristics. The lowest dark current density of p-i-n photodiodes based on quantum dots at the reverse bias of 1 V reaches the value of 0.8 mA/cm2. The cutoff wavelength shifts to the long-wavelength region with the Sn content increase. Maximum cutoff wavelength value is found to be 2.6 μm. Moreover, multilayer periodic structures with GeSiSn/Ge quantum wells and GeSiSn relaxed layers on Ge substrates were obtained. Reciprocal space maps were used to study the strained state of GeSiSn layers. The optimal growth parameters were determined to obtain slightly relaxed GeSiSn layers. Designed p-i-n photodiodes based on these structures demonstrated the minimal dark current density of 0.7 mA/cm2 and the cutoff wavelength of about 2 μm.
Research on hybrid processing of silicon carbide based on laser cutting
Authors: Wang jinhu , Jiang Kai , Yue Xiuhui , Zhang Qianyong , Wang Cuishan , Jing Xueting , Wang Jing , Tang Wenjing , Xia Wei 
Published: January 2025

Abstract
With the rapid development of semiconductor technology, silicon carbide has been widely used in various power electronic device. However, the material has an extremely high hardness ranking second only to diamond, which makes processing difficult. In this work, the two methods of laser cutting and dicing saw are utilized to test the cutting process of silicon carbide respectively, then the appropriate through-cutting process parameters are obtained. The two methods are combined to compare the cutting quality of the three approaches. As a result, the laser cutting is affected by heat with through-cutting 0.5 mm-thick silicon carbide, which results in the rough front-surface edge and much residue, and the cutting groove of the back surface is irregular. The dicing saw having more mechanical stress, resulting in serious tool wear, prone to chipping and micro-cracks and other phenomena, the back surface chipping is as high as 171.6 µm. The hybrid processing method not only reduces the degree of thermal damage, but also reduces tool wear, and the front surface is flat and clean after cutting, without a chipping phenomenon, and the back surface chipping is only 7.9 µm, which is 20 times lower than the dicing saw method.&#xD;
Islands on codim-2 branes in Gauss-Bonnet Gravity
Authors: Li Zhengjiang , Hong Zekai 
Published: January 2025

Abstract
We study the black hole information problem on codim-2 branes in Gauss-Bonnet gravity.&#xD;Thanks to the island surface ending on the brane, the Page curve of eternal black holes can&#xD;be recovered for all of the GB couplings within the causal constraints. Our results strongly&#xD;support the universality of the island mechanism. Similar to Einstein’s gravity, the HM surface&#xD;can exist only in a finite time in GB gravity. Remarkably, for various parameters, the maximum&#xD;times of HM surface are always larger than the Page times. As a result, the strange behavior of&#xD;HM surfaces does not affect the Page curves for general GB gravity. Finally, we establish the&#xD;correlation between the Page time, GB couplings, and brane tension, revealing that the Page&#xD;time increases with these factors.
Lightweight Noise Robust Spoofing Attack Detection using Cochleagram and ResNet Amalgamated Features
Authors: Chakravarty Nidhi , Dua Mohit 
Published: January 2025

Abstract
Speaker verification, like other biometric technologies, is vulnerable to spoofing attacks. An attacker impersonates a specific target speaker using impersonation, replay, Text-to-Speech (TTS), or Voice conversion (VC) techniques to gain unauthorized access to the system. The work in this paper, proposes a solution that uses an amalgamation of Cochleagram and Residual Network (ResNet) to implement the frontend feature extraction phase of an Audio Spoof Detection (ASD) system. Cochleagram generation, feature extraction-dimensionality reduction and classification are the three main phases of the proposed ASD system. In the first phase, the recorded audios have been converted into Cochleagrams by using Equivalent Rectangular Bandwidth (ERB) based gammatone filters. In the next phase, three variants of Residual Network (ResNet), ResNet50, ResNet41 and ResNet27, one by one, have been used for extracting dynamic features and Resnet50, ResNet41 that are fed to Linear Decrement Analysis (LDA) for dimensionality reduction. At last, in the classification phase, the LDA reduced features have been used for training four different machine learning classifiers such as Random Forest, Naïve Bayes, K-Nearest Neighbour (KNN), and eXtreme Gradient Boosting (XGBoost), individually. The proposed work in this paper concentrates on synthetic, replay, and deepfake attacks. The state-of-the-art ASVspoof 2019 Logical Access (LA), Physical Access (PA), Voice Spoofing Detection Corpus (VSDC) and DEepfake CROss-lingual (DECRO) datasets are utilised for training and testing the proposed ASD system. Additionally, we have assessed the performance of our proposed system under the influence of additive noise. Airplane noise at different SNR rate (0, dB 5dB, 10dB and -5dB) has been added to training and testing audios for the same. From the obtained results, it can be concluded that combination of Cochleagram and ResNet50 with XGBoost classifier outperforms all other implemented systems for detecting fake audios under noisy environment.&#xD;
Dunkl-Schrödinger equation in higher dimensions
Authors: Hamil Bilel , Lütfüoğlu Bekir Can , Merad Mahmoud 
Published: January 2025

Abstract
This paper presents analytical solutions for eigenvalues and eigenfunctions of the Schrödinger equation in higher dimensions, incorporating the Dunkl operator. Two fundamental quantum mechanical problems are examined in their exact forms: the d-dimensional harmonic oscillator and the Coulomb potential. In order to obtain analytical solutions to these problems, both Cartesian and polar coordinate systems were employed. Firstly, the Dunkl-Schrödinger equation is derived in d-dimensional Cartesian coordinates, and then for the isotropic harmonic potential interaction, its solutions are given. Subsequently, using polar coordinates the angular and radial parts of the Dunkl-Schrödinger equation are obtained. It is demonstrated that the system permits the separation of variables in both coordinate systems, with the resulting separated solutions expressed through Laguerre and Jacobi polynomials. Then, the radial Dunkl-Schrödinger equation is solved using the isotropic harmonic, pseudoharmonic, and Coulomb potentials. The eigenstates and eigenvalues are obtained for each case and the behavior of the energy eigenvalue functions are illustrated graphically with the reduced probability densities.
Modeling and simulation of the effect of surface roughness on the Fowler-Nordheim conduction in MOS structures
Authors: sabrina meguellati , Zitouni Messai , Sarra Mustapha 
Published: January 2025

Abstract
A compact Fowler-Nordheim (FN) tunneling current model is derived to describe the non-ideal, surface roughness-related relationship between current and voltage in a metal-oxide-semiconductor (MOS). This relationship is achieved by applying a fractal continuum Laplacian operator in the 1D Schrödinger equation, resulting in a model that extends the standard FN to account for surface inhomogeneities through a fractional power α. Our error analysis predicts significant inaccuracies in the extracted FN parameters when using the standard FN model to interpret rough surface data.&#xD;A methodology for extracting FN fractal parameters and the flat band voltage via a fractal FN plot is proposed. Simulated datasets and real measurements of Al/SiO₂/4H-SiC capacitors are used to validate the model. Comparison of the parameters extracted using the fractal FN model and the standard FN model confirms the predictions from the error analysis and the suitability of the fractal FN model. The fractal FN model offers a potential explanation for the large discrepancies observed in FN parameters reported in the literature.&#xD;
New Approach to Modeling of Thermal Electrons Heating Rate in Ionosphere F-layer
Authors: Lu Zhijian , Yao Jingfeng , Aktaev Nurken , Kudryavtsev Anatoly , Yerzhanov Koblandy , Zhou Zhongxiang , Wang Ying , Li Hui , Wu Jian , Yuan Chengxun 
Published: January 2025

Abstract
Heating rate of thermal electrons by superthermal electrons in ionospheric F-layer at altitudes of 150-350 km was studied over a wide range of zenith angles 45-90 degrees. As a result, a simple and universal formula for calculating the heating rate was obtained. The generalized Hoegy theory was used to obtain the formula. Within the framework of the Hoegy theory, the heating rate is determined by superthermal electrons flux and energy loss function. The energy dependence of the superthermal electron flux was obtained using the bi-exponential function. The kinetic approach was used to receive an analytical expression for the energy loss function. It has been shown that the obtained expression in good agreement with the widely used Swartz approximation. The applicability limits of the obtained expression for energy losses are discussed. It was demonstrated that the heating rate calculations using the formula obtained in the work has a good agreement with the experiments.
Electron and positron impact ionization cross sections of SiF4
Authors: Song Yunliang , Ma Yuwei , Li Bowen , Chen Ximeng 
Published: January 2025

Abstract
Based on the Binary-Encounter-Bethe (BEB) model, we present comprehensive cross-sectional data on total ionization cross sections, partial cross sections, single differential cross sections, average secondary electron energy and stopping cross sections for the SiF4 molecule in the case of electron and positron impact. For the partial cross sections, we employ the mass spectrum data (MSD) method and Huber’s model. By comparing theoretical calculations with experimental measurements, we determine the fragmentation pattern of SiF4. For positron scattering, we utilize three methods known as BEB0, BEBA, and BEBW. There is limited data of electron impact available on SiF4, and there is a notable lack of relevant investigations regarding positron impact with SiF4. Our research continues the exploration of electron and positron impact cross sections for SiF4 and serves as a reference for future studies.&#xD;
Measurement-Device-Independent High-Capacity Quantum Secure Direct Communication Utilizing Hyperentangled Bell States
Authors: Meng Hai , Zhou Ri-Gui , Du Lin-Tao 
Published: January 2025

Abstract
Quantum secure direct communication (QSDC) enables the direct transmission of secret messages without prior sharing of keys among the communicating parties. However, in practical situations, an eavesdropper can compromise the measurement device and potentially steal secret messages. To enhance the reliability of QSDC systems, measurement-device-independent (MDI) QSDC protocols have been developed. In this paper, we propose a high-capacity MDI-QSDC protocol with authentication by utilizing hyperentangled Bell states. The protocol allows the sender to transmit six classical bit messages to the receiver using one quantum state. Our protocol has a higher coding capacity compared to other MDI-QSDC protocols. Additionally, we achieve mutual authentication of the identities of the communicating parties, and our scheme has significant advantages over the traditional QSDC protocols, where the legitimacy of the communicating parties has to be assumed. Theoretical analysis proves that our protocol can effectively defend against common attacks.&#xD;
Effect of combined Kappa-Cairns distributed electrons on modulational instability and envelope soliton of ion-acoustic waves in electron-ion dusty plasma
Authors: Pain Rittika , Dalui Sandip , Sardar Sankirtan , Bandyopadhyay Anup 
Published: January 2025

Abstract
Theoretical and numerical investigations are performed to study the amplitude modulation of ion-acoustic waves in an unmagnetized collisionless dusty plasma system whose components are warm ions (adiabatic), charged (negative) dust particles and Combined Kappa-Cairns distributed electrons. Modulational instability of ion-acoustic waves is analyzed through derivation of the nonlinear Schr{"o}dinger equation using the reductive perturbation technique by implementing hydrodynamic equations for this system. The conditions for modulational instability for this electron-ion dusty plasma system have been developed, and the impacts of the relevant physical parameters on the instability region along with the maximum growth rate of instability are demonstrated. Bright and dark envelope solitons are presented, and it is observed that the profiles of envelope solitons are significantly influenced by the existence of high-energy Combined Kappa-Cairns distributed electrons.
Re-evaluation of the impact of wall retention on Tritium-self-sufficiency in fusion reactors
Authors: Schmid K. 
Published: January 2025

Abstract
In recent years several publications have claimed that the retention of tritium (T) in the first wall armor material poses a limitation on when a fusion reactor becomes T-self-sufficient. While the prediction on wall retention therein are correct, the model applied to assess the T-self-sufficiency is based on wrong assumptions and thus, the importance of T-retention in the first wall is greatly overestimated. In this publication the predictions on T-retention in the first wall armor components are included in state of the art residence time models of the entire T-cycle. These calculations show that T-wall-retention only affects T-self-sufficiency when the T-breeding ratio (TBR) is so low that the power plant is only marginally T-self-sufficient. For TBR values that allow for a finite T-doubling time and maintain a T-reserve inventory, the T-production must be so high, that the T-wall-retention is insignificant. The paper will explain the error in the previous T-self-sufficiency estimates, how to correct them and what this means for the conclusions drawn by previous publications. Then an augmented residence time model will be presented, that can include diffusion/trapping model based, time dependent wall loss data. This augmented model results in orders of magnitude higher T-retention in the first wall compared to current assumptions in residence time models. Still, it is negligible compared to the T-content in the entire T-cycle. Thus it can be concluded that based on current material data T-retention in the first wall armor will not affect T-self-sufficiency.