bluuebunny/crossref_metadata_2025_split huggingface dataset:
Atomistic modeling of electromechanical properties of piezoelectric zinc oxide nanowires
Authors: Meguid S A , Kundalwal S I , Alian Ahmed R 
Published: December 2023

Abstract
Currently, numerous articles are devoted to examining the influence of geometry and charge distribution on the mechanical properties and structural stability of piezoelectric nanowires (NWs). The varied modeling techniques adopted in earlier molecular dynamics (MD) works dictated the outcome of the different efforts. In this article, comprehensive MD studies are conducted to determine the influence of varied interatomic potentials (partially charged rigid ion model, [PCRIM] ReaxFF, charged optimized many-body [COMB], and Buckingham), geometrical parameters (cross-section geometry, wire diameter, and length), and charge distribution (uniform full charges versus partially charged surface atoms) on the resulting mechanical properties and structural stability of zinc oxide (ZnO) NWs. Our optimized parameters for the Buckingham interatomic potential are in good agreement with the existing experimental results. Furthermore, we found that the incorrect selection of interatomic potentials could lead to excessive overestimate (61%) of the elastic modulus of the NW. While NW length was found to dictate the strain distribution along the wire, impacting its predicted properties, the cross-section shape did not play a major role. Assigning uniform charges for both the core and surface atoms of ZnO NWs leads to a drastic decrease in fracture properties.
Universal Casimir attraction between filaments at the cell scale
Authors: Spreng Benjamin , Berthoumieux Hélène , Lambrecht Astrid , Bitbol Anne-Florence , Maia Neto Paulo , Reynaud Serge 
Published: December 2023

Abstract
The electromagnetic Casimir interaction between dielectric objects immersed in salted water includes a universal contribution that is not screened by the solvent and therefore long-ranged. Here, we study the geometry of two parallel dielectric cylinders. We derive the Casimir free energy by using the scattering method. We show that its magnitude largely exceeds the thermal energy scale for a large parameter range. This includes length scales relevant for actin filaments and microtubules in cells. We show that the Casimir free energy is a universal function of the geometry, independent of the dielectric response functions of the cylinders, at all distances of biological interest. While multiple interactions exist between filaments in cells, this universal attractive interaction should have an important role in the cohesion of bundles of parallel filaments.
Polarization of electromagnetic pulses
Authors: Lekner John 
Published: December 2023

Abstract
We show the impossibility, for localized and exact solutions of the Maxwell equations, of perfect circular polarization in a fixed plane, or perfect linear polarization along a fixed direction. A measure of polarization of electromagnetic pulses is obtained by analogy with that useful in monochromatic radiation, and its limitations discussed. Using oscillatory solutions of the free-space Maxwell equations, for which all components of the electric and magnetic fields satisfy the wave equation, we construct explicit examples of TE pulses which are linearly polarized with an azimuthal electric field, TE+iTM pulses approximately linearly polarized along the propagation direction, and also approximately circularly polarized pulses. The latter have perfect circular polarization on the propagation axis.
Emerging II-VI wide bandgap semiconductor device technologies
Authors: Kuddus Abdul , Mostaque Shaikh Khaled , Mouri Shinichiro , Hossain Jaker 
Published: December 2023

Abstract
The demand for advanced electronic and optoelectronic devices has driven significant research and development efforts toward exploring emerging semiconductor materials with enhanced performance characteristics. II-VI semiconductors have been studied extensively owing to their wide bandgap characteristics, which enable high electron mobility, excellent thermal stability, and resistance to radiation damage. These properties make them well-suited for a range of applications, including solar cells, light-emitting diodes (LEDs), photodetectors, lasers, sensors, and field effect transistors (FETs). In II-VI compounds, both ionic and covalent bonds exist with a higher electronegative nature of the VI-group elements than II-group elements. This existing ionic behavior strongly influences the binding of valence band electrons rather strongly to the lattice atoms. Thus, the II-VI semiconductors such as CdS, CdTe, ZnS, ZnSe, and CdSe possess wide tunable bandgaps (~0.02 to ≥ 4.0 eV) and high absorption coefficients of approximately 106 cm−1, setting them apart from other semiconductors formed by a covalent bond with closely equal atomic weights. This review article delves into the physics of II-VI semiconductor homo/heterojunctions, and the steps involved in device fabrication including lithography, etching, metallization, stability (oxidation and passivation) and polymerization together with several doping strategies. Furthermore, this review explores the process for tuning the distinct physical and chemical properties and a substantial advancement in electronic, and optoelectronic devices, including tools, cutting-edge equipment, and instrumentations. This comprehensive review provides detailed insights into the potential and technological progress of II-VI wide bandgap semiconductor device technology including experienced challenges and prospects.
Topological insulator behavior in low-temperature electrical resistivity of the high-entropy single-crystalline thick-filmed (Bi2/3Sb1/3)2 (Te2/5Se2/5S1/5)3 alloy
Authors: Ivanov O , Yaprintsev M , Yaprintseva E , Nickulicheva T , Vasil’ev A 
Published: December 2023

Abstract
High-entropy (Bi2/3Sb1/3)2(Te2/5Se2/5S1/5)3 alloy has been for the first time prepared by the self-propagating high-temperature synthesis, spark plasma sintering and melting methods. Single-crystalline and single-phased film of the alloy with thickness of ∼0.11 mm was applied to find and analyze features in its electrical resistivity, which are characteristic of topological insulators. A crossover from high-temperature metal to low-temperature insulating behavior was observed in temperature dependence of the resistivity at T

C
≈ 32 K. The insulating behavior within 10 ÷ 25 K range can be due to electron–electron interaction between the 2D-electrons, existing in the surface conducting gapless states of topological insulators. Transverse magnetic field dependences of the resistivity are remarkably non-symmetric within temperature 3.5 ÷ 80 K range. The non-symmetric behavior of the magnetoresistivity is resulted from combination of antisymmetric linear and symmetric quadratic contributions. Around zero magnetic field, sharp cusps were observed within narrow magnetic field range. With increasing temperature, the cusps are gradually weaken and totally vanishing above T

C
. These cusps are characteristic of weak antilocalization that is one of key features of topological insulators. The cusps were analysed by in frames of the Hikami-Larkin-Nagaoka model, developed for systems with strong spin–orbit coupling. At cooling below T

C
, the effective dephasing length rapidly increases. Within 10 ÷ 25 K range, temperature behaviour of the dephasing length can be described by the electron–electron scattering. Below 10 K other scattering mechanisms should be also considered.
Impact resistance of a double re-entrant negative poisson’s ratio honeycomb structure
Authors: Hai Hong , Chen Chenfeng , Wang Wei , Xu Weikai 
Published: December 2023

Abstract
Auxetic metamaterials, usually consisting of cellular solids or honeycombs, exhibit the advantages of high designability and tunability. In particular, the negative Poisson’s ratio (NPR) property endows them with innovative mechanical properties and makes them promising for a wide range of applications. This paper proposes a modified double re-entrant honeycomb (MDRH) structure and explores its Young’s modulus and Poisson’s ratio through theoretical derivation and finite element analysis. Additionally, it discusses the relationship between these parameters and the concave angle. Furthermore, the deformation mode, nominal stress–strain curve, and specific energy absorption of this MDRH are investigated for different impact velocities and compared with traditional re-entrant honeycomb (TRH) materials. The results show that the MDRH honeycomb structure greatly widens the range of effective modulus and NPR values. At different impact velocities, the MDRH exhibits high plateau stress and specific energy absorption, indicating good impact resistance. These results provide a theoretical foundation for the design and implementation of new energy-absorbing structures.
Probing the impact of Ba on properties of ZnO at the nanoscale: optical, dielectric and antibacterial activity evolution
Authors: Kayani Zohra Nazir , Farid Ayesha , Bashir Zainab , Shabbir Aqsa , Riaz Saira , Naseem Shahzad 
Published: December 2023

Abstract
The sol–gel dip coating technique was used to manufacture undoped and Barium doped zinc oxide thin films. Doping is extensively used to refine semiconductor properties. Without and with varying ratios of Ba 1–9 wt% dopant, ZnO thin films have been manufactured. The effect of Ba on the dielectric, structural, antibacterial, optical and morphological characteristics of ZnO was investigated. The optical properties demonstrate that the bandgap of the pure ZnO thin film is higher than that of Ba-doped ZnO films, which is beneficial for improving solar cell performance. According to the XRD data, all films of ZnO have hexagonal wurtzite structures According to XRD structural analysis; the incorporation of Ba lowers the crystallinity of ZnO thin films by reducing the crystallite size. The Ba doping changes the surface roughness and morphology. The hopping process defines the dielectric characteristics that follow Koop’s theory as well as the Maxwell–Wagner model. A lower dielectric constant makes it ideal for high-frequency devices. These films exhibit ferromagnetism. Barium-doped zinc oxide photocatalyst could successfully decompose methylene blue dye by making it suitable for wastewater treatment. Ba doping effectively kills both gram-negative and gram-positive bacteria. They have antimicrobial applications in the food industry and biomedicine.
Insights into COVID-19 stochastic modelling with effects of various transmission rates: simulations with real statistical data from UK, Australia, Spain, and India
Authors: Xu Changjin , Pang Yicheng , Liu Zixin , Shen Jianwei , Liao Maoxin , Li Peiluan 
Published: December 2023

Abstract
In the literature [16], the COVID-19 model has been constructed using deterministic approach. The present manuscript examines a stochastic model designed to capture the interplay between COVID-19 and varying infection rates on disease dynamics. We present the necessary criteria for a global solution to the considered model to exist and be unique. To illustrate several outcomes pertaining to the ergodic properties of the given system, the we utilize nonlinear analysis. Furthermore, the model undergoes simulation and is compared with deterministic dynamics. To verify the efficacy of the considered model and demonstrate its utility, we compare the dynamics of the infected population to real statistical data from multiple countries, such as the United Kingdom, Australia, Spain, and India. The proposed model has proven to be a reliable and effective tool for understanding the intricate nature of COVID-19 dynamics. Moreover, we provide a visually striking depiction of the impact of different infection rates on the propagation of the model under investigation. This visualization provides valuable insight into the multifaceted nature of the pandemic and significantly contributes to the comprehension of COVID-19 dynamics.
Effect of pressure on the structure transitions and electronic properties of the organic semiconducting Bis(salicylaldehyde) crystal
Authors: Yang Cheng , Gong Zhicheng , Chen Limin , Wei Chao , Zhang Chao , Liu Chunsheng , Xie Qiyun 
Published: December 2023

Abstract
The structure, electronic, and optical properties of bis(salicylaldehyde) crystal under 0–300 GPa pressure are calculated by density functional theory (DFT). By comparing the lattice parameters (i.e., lattice constants, bond lengths, and bond angles) under different pressures, it is found that the lattice parameters are sensitive to pressure and change complicatedly with pressure. Furthermore, the analysis of the electronic structure shows that the crystal is an indirect bandgap semiconductor at 0 GPa and becomes a conductor at 115, 155, and 185 GPa, respectively, where the far- and near-Fermi levels density of states (DOS) in the valence band are mainly contributed by the O-2s orbital electrons, the joint effect of the C-2p and the O-2p orbital electrons respectively. Dielectric function studies have shown that it exhibits novel optical properties as the pressure increases, leading to different photoelectric properties.
Shallow relic gravitational wave spectrum with acoustic peak
Authors: Sharma Ramkishor , Dahl Jani , Brandenburg Axel , Hindmarsh Mark 
Published: December 2023

Abstract
We study the gravitational wave (GW) spectrum produced by acoustic waves in the early universe,
such as would be produced by a first order phase transition, focusing on the low-frequency side of the peak.
We confirm with numerical simulations the Sound Shell model prediction of a steep rise with wave number k of k
9
to a peak whose magnitude grows at a rate (H/k
p)H, where H is the Hubble rate and k
p the peak wave number, set by the
peak wave number of the fluid velocity power spectrum. We also show that hitherto neglected terms give
a shallower part with amplitude (H/k
p)2
in the range H ≲ k ≲ k
p, which in the limit of small H/k rises as k.
This linear rise has been seen in other modelling and also in direct numerical simulations.
The relative amplitude between the linearly rising part and the peak therefore depends on the peak wave number of the velocity spectrum and
the lifetime of the source, which in an expanding background is bounded above by the Hubble time H
-1.
For slow phase transitions, which have the lowest peak wave number and the loudest signals, the acoustic GW peak appears as a localized enhancement of
the spectrum, with a rise to the peak less steep than k
9.
The shape of the peak, absent in vortical turbulence,
may help to lift degeneracies in phase transition parameter estimation at future GW observatories.
Fast production of cosmological emulators in modified gravity: the matter power spectrum
Authors: Fiorini Bartolomeo , Koyama Kazuya , Baker Tessa 
Published: December 2023

Abstract
We test the convergence of fast simulations based on the COmoving Lagrangian Acceleration (COLA) method for predictions of the matter power spectrum, specialising our analysis in the redshift range 1 ≤ z ≤ 1.65, relevant to high-redshift spectroscopic galaxy surveys. We then focus on the enhancement of the matter power spectrum in modified gravity (MG), the boost factor, using the Dvali-Gabadadze-Porrati (DGP) theory as a test case but developing a general approach that can be applied to other MG theories. After identifying the minimal simulation requirements for accurate DGP boost factors, we design and produce a COLA simulation suite that we use to train a neural network emulator for the DGP boost factor. Using MG-AREPO simulations as a reference, we estimate the emulator accuracy to be of ∼ 3% up to k = 5 h Mpc-1 at 0 ≤ z ≤ 2. We make the emulator publicly available at: https://github.com/BartolomeoF/nDGPemu.
Strong vertices of bottom mesons B and B* and bottomonia
, ηb
*
Authors: Lu 卢 Jie 杰 , Yu 于 Guo-Liang 国梁 , Wang 王 Zhi-Gang 志刚 , Wu 吴 Bin 彬 
Published: December 2023

Abstract
In this study, the strong coupling constants of vertices

,

,

,

, and

are analyzed in the framework of QCD sum rules. All possible off-shell cases and the contributions of vacuum condensate terms including

,

,

,

, and

are considered. The momentum dependent strong coupling constants are first calculated and then fitted into the analytical function

, which is extrapolated to time-like regions to obtain the final values of strong coupling constants. The final results are

,

GeV

,

,

, and

GeV

. These strong coupling constants are important input parameters that reflect the dynamic properties of the interactions among the mesons and quarkonia.
What can we learn from recent 2ν
β
β experiments?*
Authors: Fang 房 Dong-Liang 栋梁 
Published: December 2023

Abstract
Recent measurements of the two neutrino double beta decay high precision electron spectra, combined with charge exchange or β-decay experimental data, have revealed severe constraints across current nuclear many body calculations. Our calculations show that the quasi-particle random phase approximation (QRPA) approach can adequately reproduce the measured spectra for the two open shell nuclei,

Se and

Mo. For the closed shell nucleus

Xe, QRPA can also reproduce the spectra with proper treatments. Considering the high-lying state reduction, we also find that the nuclear shell model can also adequately reproduce the spectra and Gamow-Teller transition strength under a unique quenched axial-vector coupling constant

. For

Xe, we find that flipping the sign for the decay strength causes the spectra to go beyond the so-called high-lying state dominance hypothesis. These results call for future high precision measurements of charge-exchange reactions.
Corrigendum: Factual Disagreements in Construction Delay Disputes: Identification, Evaluation and Testing of the Justifications for Differences in Opinion (IOP Conf. Ser.: Earth Environ. Sci. 1101 052001)
Authors: Atanasov V A , Greenwood D J , Sanchez D E , Hatcher C J 
Published: December 2023

Abstract
Please see Article PDF for corrigendum text.
Distribution of the Surface Ruptures in the Kalaotoa Due to the 2021 M
w
7.3 Flores Sea Earthquake, Indonesia
Authors: Maulana B R , Burhanuddin M S , Akbar M F 
Published: December 2023

Abstract
A magnitude 7.3 earthquake occurred at precisely 11:20 on December 14, 2021, within the Flores Sea region of Indonesia, precipitating a consequential landslide event. This seismic incident induced the creation of an extensive rupture zone spanning approximately 8 kilometers along the Kalaotoa fault (KF) system, which exhibits an NNE-NW-SSE trend. The objective of this study was to concentrate specifically on the Kalaotoa Island vicinity, situated approximately 40 kilometers from the earthquake’s epicenter, encompassing meticulous orientation and comprehensive field surveys conducted during the reconnaissance phase. The results of the ground assessment have been combined with spatial analysis data to ascertain the configuration and dispersion of ruptures subsequent to the earthquake, thus delineating the affected region as a prospective area susceptible to seismic events and subsequent calamities. In the vicinity proximate to the northern epicenter, fractures resulting from the seismic activity were consolidated, exhibiting considerable devastation in the form of ground fissures, rock avalanches, landslides, and structural collapses, and were predominantly oriented in a roughly NE-SW direction. Notably significant are the southern beaches of Lato’do and the eastern extremity of the rupture zone in the Lembang Mate’ne area, where coastal transgression and extensive inundation during high tides have been observed due to subsidence of 1.2 meters since the 2021 Flores Sea earthquake. Horizontal displacement around Kalaotoa Port, north of the Karumpa-Kawawo area. Displacement distribution, slip sense, and crustal deformation after earthquake propagate unilaterally to the north, resulting in a movement of the northeast side of the fault concerning SE.
Makassar City Air Pollution Forecast in 2045
Authors: Jusri  , Jamil M H , Barkey Roland A. 
Published: December 2023

AbstractAir pollution is a problem for all countries in the world, especially for urban areas, because most sources of air pollution are in urban areas. In 2019, it was predicted that ambient air pollution from PM2.5 caused 4.2 million premature deaths globally. It contributes to cancer, respiratory, and cardiovascular problems. Makassar is the most populous city in South Sulawesi Province, with a population of 1,427,619 in 2021. The number of motorized vehicles in 2021 is 1,740,793 units and 1,113 industries. With these conditions, Makassar City has a high potential for air pollution. This research aims to forecast the air pollution level of Makassar City in 2045. The forecasting results can be a reference in developing an air pollution control plan in Makassar City. The forecasting model used is LSTM which is the development of RNN architecture. The results of air pollution forecasting are displayed in the form of an air pollution standard index (ISPU) for easy understanding by the general public. Based on the forecasting results in 2045, the level of air pollution in Makassar City is in the moderate and unhealthy categories. Despite still being dominated by the moderate category, it should be a concern that air quality is no longer in the good category.
Barcoding a glass eel migration: a snapshot of taxa migrating upstream in the Palu River, Central Sulawesi, Indonesia
Authors: Serdiati Novalina , Ndobe Samliok , Rosyida Eka , Moore Abigail Mary 
Published: December 2023

Abstract
Eels of the genus Anguilla are high value food fish with a catadromous life cycle. As tropical anguillid glass eels migrate to freshwater in multi-species schools, effective management of these and other diadromous resources requires reliable data. Previous research using two morphological methods concluded that between three and five anguillid eels recruit to the Palu River in Central Sulawesi, Indonesia with interannual and seasonal variations in species composition, size structure, and co-migrating taxa. Some glass eels and other taxa could not be identified based on external morphology. To clarify the taxonomic uncertainty regarding species recruiting to the Palu River this study applied DNA barcoding using the Cytochrome Oxidase I (COI) mitochondrial DNA (mtDNA) molecular marker. Taxa identified from the first sampling of glass eels and other taxa recruiting in these mixed schools included three anguillid eels, five other fishes, two crustacea and one mollusc, presenting a snapshot of taxa migrating upstream in the Palu River. Current GenBank accessions did not enable species level identification of two fish larvae (families Eleotridae and Tetraroginae). The sequences will add to Indonesian accessions in the GenBank repository and inform resource management, including the use of environmental DNA (eDNA) methods for monitoring Indonesian anguillid eels.