bluuebunny/crossref_metadata_2025_split huggingface dataset:
Atomic insight into nanoindentation response of nanotwinned FeCoCrNiCu high entropy alloys
Authors: Tian Yuanyuan , Fang Qihong , Chen Junni , Luo Gangjie , Du Chunyang 
Published: June 2024

Abstract
FeCoCrNiCu high-entropy alloys (HEAs) exhibit extraordinary mechanical properties and have the capability to withstand extreme temperatures and pressures. Their exceptional attributes make them suitable for diverse applications, from aerospace to chemical industry. We employ atomic-scale simulations to explore the effects of twinning boundary and twinning thickness on the mechanical behavior of nanotwinned FeCoCrNiCu during nanoindentation. The findings suggest that as the twinning thickness decreases within the range of 19.3–28.9 Å, both twinning partial slips (TPSs) and horizontal TPSs gradually become dominant in governing the plastic behaviors of the nanotwinned FeCoCrNiCu, thereby resulting in an inverse Hall–Petch effect. Remarkably, when the twinning thickness is compressed below 19.3 Å, a shift in the plastic deformation mechanism emerges, triggering the conventional Hall–Petch relation. The observed Hall–Petch behavior in nanotwinned FeCoCrNiCu is attributed to the strengthening effect imparted by the twinning boundaries. Consequently, the twinning boundary play an instrumental role in steering the plastic deformation mechanism of the nanotwinned FeCoCrNiCu when the twinning thickness descends beneath 19.3 Å. This study contributes significant insights towards the design of next-generation high-performance HEAs, underpinning their potential industrial utilization.
A review of etching methods and applications of two-dimensional MXenes
Authors: Sun Min , Chu Siyu , Sun Zhichao , Jiao Xinyu , Wang Lingli , Li Zijiong , Jiang Liying 
Published: June 2024

Abstract
MXenes have been attracting much attention since their introduction due to their amazing properties such as unique structure, good hydrophilicity, metal-grade electrical conductivity, rich surface chemistry, low ionic diffusion resistance, and excellent mechanical strength. It is noteworthy that different synthesis methods have a great influence on the structure and properties of MXenes. In recent years, some modification strategies of MXenes with unique insights have been developed with the increasing research. In summary, this paper reviews and summarizes the recent research progress of MXenes from the perspective of preparation processes (including hydrofluoric acid direct etching, fluoride/concentrated acid hybrid etching, fluoride melt etching, electrochemical etching, alkali-assisted etching and Lewis acid etching strategies), which can provide valuable guidance for the preparation and application of high-performance MXenes-based materials.
Cobalt doped Prussian blue modified hollow polydopamine for enhanced antibacterial therapy
Authors: Zhao Qiyao , Zhou Yifan , Zhang Qin , Qu Xiaomeng , Jiang Yu , Wu Shilong , Zhang Meixuan , Zhao Qi , Qiang Qingwang , Li Jian , Li Yanyan 
Published: June 2024

Abstract
Give the emergence of drug resistance in bacteria resulting from antibiotic misuse, there is an urgent need for research and application of novel antibacterial approaches. In recent years, nanoparticles (NPs) have garnered significant attention due to their potential to disrupt bacteria cellular structure through loading drugs and special mechanisms, thus rendering them inactive. In this study, the surface of hollow polydopamine (HPDA) NPs was utilized for the growth of Prussian blue (PB), resulting in the formation of HPDA-PB NPs. Incorporation of Co element during the preparation process led to partial doping of PB with Co2+ ions. The performance test results demonstrated that the HPDA-PB NPs exhibited superior photothermal conversion efficiency and peroxidase-like activity compared to PB NPs. HPDA-PB NPs have the ability to catalyze the formation of hydroxyl radicals from H2O2 in a weakly acidic environment. Due to the tiny PB particles on the surface and the presence of Co2+ doping, they have strong broad-spectrum antibacterial properties. Both in vitro and in vivo evaluations confirm their efficacy against various bacterial strains, particularly Staphylococcus aureus, and their potential to promote wound healing, making them a promising candidate for advanced wound care and antimicrobial applications.
A radiometric model for demonstration of exoplanets detection by the transit method
Authors: Seixas T M , Salgueiro da Silva M A 
Published: June 2024

Abstract
This work describes an exact radiometric model for experimental demonstrators of the detection of exoplanets by the transit method. This model generalises the calculation of the depth of occultation from the standard transit method to the case of a finite size demonstrator apparatus. Results show that, for demonstrator apparatuses of moderately small sizes, a significant accuracy improvement in the determination of the size of a planet model can be achieved using the proposed method in comparison to using the formula from the standard transit method. The radiance distribution of the star model is found to be of crucial importance, as deviations from a Lambertian radiance distribution can lead to significantly different results.
Using astronomy to analyse the van Gogh drawing ‘Bank of the Rhone’
Authors: Spathopoulos Vassilios McInnes 
Published: June 2024

Abstract
This paper presents an astronomical analysis of the van Gogh drawing ‘Bank of the Rhone’ to determine the possible dates of its creation. By examining the position of the sun depicted in the drawing and comparing it with the actual sunset positions at the location in Arles, France, a range of dates is derived that differs from the accepted historical dating of the work. The study demonstrates the potential of using interdisciplinary approaches that combine art and astronomy to gain new insights into artistic works. The analysis also serves as an engaging exercise for students to explore the intersection of science and art.
Microwave plasma interaction in a printed transmission line for a power limiting application: from surface-wave-sustained to leaky-wave-sustained discharge
Authors: Fuster Lucas , Pascaud Romain , Sokoloff Jérôme , Hagelaar Gerjan , Hoffmann Patrick , Pascal Olivier , Callegari Thierry 
Published: June 2024

Abstract
The coupling between a microwave signal and a plasma discharge in a suspended microstrip transmission line is analytically studied. Maxwell’s equations are solved in a 2D approximation to get the expressions of the electromagnetic field. The wave propagation in the guiding structure is first explored without plasma, and for several modes and frequencies. A unified characterization of the three different modes that can propagate at the interface between two dielectric media, namely the leaky waves, the pseudo-surface wave and the pure surface wave, is given in terms of of both wave vectors and electromagnetic field magnitude distribution. This analyze allow to conclude that the fundamental mode in this case is a pseudo-surface wave. Thereafter, we focus on the microwave propagation with a uniform plasma inside the guiding structure. In the non collisional limit, it appears that the plasma discharge is sustained by the so-called pure surface wave, whereas in the collisional limit, a leaky wave propagates along the plasma column. Finally, a non-uniform density profile is taken into account in the calculation. The numerical results obtained from the self-consistent simulation of the microwave-plasma coupling, in a previous work, are thus analyzed with the aid of the analytical formulas to identify the microwave coupling involved in our plasma-based microwave power limiter. The computed propagation constant from numerical data confirmed the type of coupling exhibited for a uniform electron density. Furthermore, we highlight the role of the dielectric slab, from which electromagnetic power transfer occurs into the plasma discharge.
Controlled release and antibacterial activity of corn starch-based films containing nanocellulose and thymol
Authors: Nordin Norhazirah , Othman Siti Hajar , Kadir Basha Roseliza , Abdul Rashid Suraya 
Published: June 2024

Abstract
The use of nanomaterials such as cellulose nanofiber (CNF) and antimicrobial compounds such as thymol (Thy), in starch films may improve the functional properties of films as active packaging films. This study quantifies the retention of thymol in corn starch (CS) and CS films containing cellulose nanofibers (CS/CNF) and investigates the migration of thymol from the films into a food simulant. A kinetic study was performed to evaluate the release of thymol from films into fatty acid food simulant (95% v/v ethanol) at 40 °C. The antibacterial activity of films was investigated via liquid culture assay. It was found that the addition of thymol significantly affects the surface morphology and cross-section of the films. CS/Thy and CS/CNF/Thy films retained thymol at 2.88 ± 0.50 and 11.21 ± 0.75 mg per g of CS/Thy and CS/CNF/Thy films, respectively. The release of thymol was affected by the presence of an intercalating network of CNF, which exhibited Fickian diffusion behavior. The release of thymol reached equilibrium within 48 h for CS/Thy, and 72 h for CS/CNF/Thy films. The CS/CNF/Thy film had a greater inhibitory effect than the CS/Thy film against Listeria monocytogenes and Salmonella Typhimurium. These findings demonstrate the potential applications of these films in improving the shelf life of perishable food products.
Quantum anomalous Hall effect and half-metal state of valley in VGe2N4 monolayer
Authors: Li Zeqin , Wu Yanzhao , Tong Junwei , Deng Li , Yin Xiang , Tian Fubo , Zhang Xianmin 
Published: June 2024

Abstract
Understanding the physical properties of valley and achieving its half metal state is the key to applying the valley degree of freedom. In this study, by first-principles calculations, the VGe2N4 monolayer is demonstrated as a ferrovalley semiconductor with a valley polarization of 48 meV. Furthermore, two means of compressive strain and regulating the electron correlation effect are explored to achieve the half-metal state of valley in the present VGe2N4 monolayer. Interestingly, topological phase transitions from ferrovalley, half-valley metal to quantum anomalous Hall effect state appear with the increase of strain in the VGe2N4 monolayer. More interestingly, half-metal state of valley induced by electronic correlation or strain can occur in VGe2N4 monolayer, which means 100% spin-polarized valley carriers will be excited. In this case, with the action of an in-plane electric field, the VGe2N4 monolayer will present an anomalous valley Hall effect. Based on these results, the related valleytronics devices are designed. Our work emphasizes the entire process from ferrovalley to topological phase transition, and a method for achieving the half-metal state of valley is proposed. Our finding is of great significance for the development of valleytronics.
Bulk-boundary and RPS thermodynamics from topology perspective
Authors: Sadeghi Jafar , Alipour Mohammad Reza , Gashti Saeed Noori , Afshar Mohammad Ali S. 
Published: June 2024

Abstract
In this study, we investigate the bulk-boundary and restricted phase space (RPS) thermodynamics of Rissner-Nordström (R-N) AdS and 6-dimensional charged Gauss-Bonnet AdS black holes. Additionally, we examine the topological characteristics of the considered black holes and compare them with the results of extended thermodynamics. We determine that the topological behavior of the bulk-boundary thermodynamics is the same as that of the extended thermodynamics, whereas the RPS thermodynamics exhibits a distinct behavior. Furthermore, we demonstrate that within the RPS formalism, there is only one critical point with a topological charge of +1

. Moreover, in the RPS formalism, the inclusion of higher-derivative curvature terms in the form of Gauss-Bonnet gravity does not alter the topological classification of critical points in charged AdS black holes.
Analysis of Moiré pattern for parallel binary gratings based on AND and OR operators
Authors: Khokhuntod Pongsak , Kaewpoonsuk Anucha 
Published: June 2024

Abstract
A method for analyzing the Moiré pattern of a parallel binary grating based on the high-frequency component of the omitted pattern is proposed. The analysis aims to investigate the signal components that influence the dark-light band formation of the Moiré pattern. The analytical technique begins with the consideration that both grating patterns are a set of binary rectangular signals with two signal level values, ‘0’ and ‘1.’ Subsequently, Fourier series expansion of these two sets of signals was performed considering the frequency, initial phase and duty cycle of the signals. The superposition of both input signals relies on algebraic equations equivalent to AND and OR operators. The final step was to eliminate the effect of the high-frequency component, which is analogous to the low-pass filter of the electronic circuit (based on averaging the signal intensity per image length). If the frequencies of the two gratings are equal, the analysis based on both operators provides an output signal depending on the initial phase (placement position) and duty cycle values. If the frequencies of the two gratings are not equal, the analysis results show that the output signal has a frequency equal to the frequency difference between the two signals. Moreover, if the two input gratings had a duty cycle of 0.5, the overlapping resulted in a triangular shape. The results from the computer program to simulate the AND and OR operators were consistently compared to the plots of the analytical equations. In addition, they are compatible with image processing results.
Ab initio property characterisation of thousands of previously unexplored 2D materials
Authors: Lyngby Peder , Thygesen Kristian Sommer 
Published: June 2024

Abstract
We perform extensive density functional theory calculations to determine the stability and elementary properties of 4249 previously unexplored monolayer crystals. The monolayers comprise the most stable subset (energy within 0.1 eV/atom of the convex hull) of a larger portfolio of two-dimensional (2D) materials recently discovered using a deep generative model and systematic lattice decoration schemes. The relaxed 2D structures are run through the basic property workflow of the Computational 2D Materials Database (C2DB) to evaluate the dynamical stability and obtain the stiffness tensor, piezoelectric tensor, deformation potentials, Born and Bader charges, electronic band structure, effective masses, plasma frequency, Fermi surface, projected density of states, magnetic moments, magnetic exchange couplings, magnetic anisotropy, topological indices, optical- and infrared polarisability. We provide statistical overviews of the property data and highlight a few specific examples of interesting materials. Our work exposes previously unknown parts of the 2D chemical space and provides a basis for the discovery of 2D materials with specific properties. All data is available in the C2DB.
Synthesis of energy-conserving quantum circuits with XY interaction
Authors: Bai Ge , Marvian Iman 
Published: June 2024

Abstract
We study quantum circuits constructed from

i

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gates and, more generally, from the entangling gates that can be realized with the XX + YY interaction alone. Such gates preserve the Hamming weight of states in the computational basis, which means they respect the global U(1) symmetry corresponding to rotations around the z axis. Equivalently, assuming that the intrinsic Hamiltonian of each qubit in the system is the Pauli Z operator, they conserve the total energy of the system. We develop efficient methods for synthesizing circuits realizing any desired energy-conserving unitary using XX + YY interaction with or without single-qubit rotations around the z axis. Interestingly, implementing generic energy-conserving unitaries, such as CCZ and Fredkin gates, with two-local energy-conserving gates requires the use of ancilla qubits. When single-qubit rotations around the z-axis are permitted, our scheme requires only a single ancilla qubit, whereas with the XX+YY interaction alone, it requires two ancilla qubits. In addition to exact realizations, we also consider approximate realizations and show how a general energy-conserving unitary can be synthesized using only a sequence of

i

SWAP

gates and two ancillary qubits, with arbitrarily small error, which can be bounded via the Solovay–Kitaev theorem. Our methods are also applicable for synthesizing energy-conserving unitaries when, rather than the XX + YY interaction, one has access to any other energy-conserving two-body interaction that is not diagonal in the computational basis, such as the Heisenberg exchange interaction. We briefly discuss the applications of these circuits in the context of quantum computing, quantum thermodynamics, and quantum clocks.
YOLOv8n-GAM: an improved surface defect detection network for hot-rolled strip steel
Authors: Xu Huanwei , Xiao Xuyuan , Zhao Zewei , Wang Zhonglai 
Published: June 2024

Abstract
Production defects caused by irresistible factors such as process design problems or differences in steel properties in strip production affect the economic benefits of the enterprise and threaten production safety. Traditional defect detection methods are difficult to achieve real-time and high-precision detection, so developing surface defect detection methods based on deep learning is of great significance for strip production. In order to effectively improve the accuracy of the deep learning model in detecting surface defects on hot-rolled strip, in this work we propose a real-time detection model for surface defects on strip steel based on the YOLOv8n model. Firstly, the newly convolutional layer Con5v is designed to replace the original convolutional layer in the neck, and an attention mechanism is added in front of each Con5v to improve the algorithm’s ability to extract small target information. Secondly, an additional set of upsampled feature extraction units is added to the neck in order to enhance the spatial information of the feature map. Subsequently, a set of feature fusion units is incorporated and the convolutional layers in it are improved to provide better feature maps. Thirdly, the number of decoupling detection heads is increased to receive more high-quality features. The final experimental results show that YOLOv8n-GAM (YOLOv8 Nano Model with Global Attention Mechanism) achieves 81.4mAP and 82.0FPS on the NEU-DET dataset and 71.2mAP and 55.0FPS on the GC10-DET dataset, which are 5.7% and 6.9% higher than those of YOLOv8n, respectively. The model proposed in this paper achieves a comprehensive performance improvement in strip steel.
Role of nano-bio-composites in the sustainable agriculture: a review
Authors: Jha Saket , Shukla Shashi Kant , Pandey Anand , Singh Ravikant , Tiwari Ajay Kumar , Pathak Ashutosh , Bhardwaj Abhishek Kumar , Singh Abhimanyu Kumar , Dikshit Anupam 
Published: June 2024

Abstract
Rapidlyincreasing population, the demand for food has increased substantially. To overcome food deficits, an increase in agricultural production is needed, and for sustainability, the qualities of crops as well as maintaining the fertility of the soil are challenging situations. Soil contains limited amount of macro, micronutrients and innumerable amounts of soil microflora, which helps in crop production. Since the mid-19th century, a plethora of chemical fertilizers have been extensively used to improve crop production, but over time, they have shown disastrous effects on the soil compositionand profile. In the current alarming scenario, a new technology arearising, namely nanotechnology, in the field of agriculture. Nano-chemicals can play a paramount role in sustainable agriculture. This reviewsummarizes a variety of nanomaterials as pesticide, fertilizers and control of attack of fungus and bacterial diseases. Here discussed a range of nanomaterials including Ag, Fe, Cu, Si, Se, Al, Zn, ZnO, TiO2 and carbon nanotubes non-propitious effectsof biomagnification. This review alsodiscussesthe several mechanisms which show how nanomaterials does work as nanofertilizer, nano pesticides, and control bacterial and fungal diseases along with the advantages and disadvantages in the sustainable approach of agriculture. Furthermore, it discusses the synergistic effect of nanomaterials and conventional approach involved in agriculture practices. Nano-fertilizers and nano-biofertilizers are new tools that have evolved for the sustainableagricultural and food security.
Investigating microplastics and nanoplastics released from food bag ziplock using SEM and Raman imaging
Authors: Fang Cheng , Yu Jingxian , Gopalan Saianand , Naidu Ravi 
Published: June 2024

Abstract
Microplastic contamination is a concern in our daily lives, such as being released from self-sealing ziplock (sliderless zipper) plastic bags that are commonly used for food storage. That is because during the closure and opening process, due to friction and deformation, the male rim inserting into or separating from the female rim can release debris as micro- and nanoplastics (MNP). Herein, we initially observed the released debris using scanning electron microscopy (SEM). Subsequently, Raman imaging was employed to directly visualise the debris, either scratched on the rim surface or fallen down from the rim, from molecular spectrum perspective. Raman imaging analyses MNP from hundreds to thousands of spectra rather than from a single spectrum or peak, enhancing the signal-to-noise ratio statistically and providing morphological information for quantification. The confocal Raman-based mapping of MNP may be susceptible to be false images, which can be improved through terrain 3D mapping. Additionally, the weak signal of nanoplastics can be enhanced by reducing scanning pixel size and deconvoluting with surface-fitting algorithm. Consequently, we estimated that approximately 5(±3) MNP per millimetre along the ziplock length may be released during each closure/opening process. Given the use of these plastic bags for food storage, this level of contamination is concerning, warranting careful risk assessment alongside other potential MNP sources of plastic items used in our kitchens. Overall, Raman imaging can be effectively analyse MNP and more broadly nanomaterials, with help of algorithms and SEM.