bluuebunny/crossref_metadata_2025_split huggingface dataset:
A dual-weighted adversarial network for partial domain fault diagnosis of machinery
Authors: Ding Xue , Deng Aidong , Deng Minqiang , Shi Yaowei , Gryllias Konstantinos 
Published: March 2024

Abstract
Domain adaptation provides a promising approach to cross-domain fault diagnosis of rotating machinery. While many current methods focus on scenarios where the source and target domains share identical label spaces, a prevalent situation in industrial production involves the target domain being a subset of the source domain, known as partial domain adaptation (PDA). The main challenge in PDA is the label mismatches caused by outlier classes, making the alignment between domains particularly difficult. To this end, a dual-weighted adversarial network is proposed in this paper. Specifically, a bilateral class weighting strategy (BCWS) is developed, which can effectively suppress negative migration at the decision boundary while improving the robustness of adversarial training by applying bilateral weighting to both the source and target domains. Moreover, a collaborative framework is developed to facilitate positive migration. The constructed global perceptual module (GPM) is highly correlated with the improved adversarial loss function, which adaptively adjusts the input feature map according to the accuracy of the target domain classification and pays more attention to the domain-invariant features. Experimental results for two cases, namely across different operating conditions and across different rotating components, verify the effectiveness and superiority of the proposed method for the PDA problem.
Recent advance of high-quality perovskite nanostructure and its application in flexible photodetectors
Authors: Cheng Yan , Guo Xin , Shi Yi , Pan Lijia 
Published: March 2024

Abstract
Flexible photodetectors (PDs) have garnered increasing attention for their potential applications in diverse fields, including weather monitoring, smart robotics, smart textiles, electronic eyes, wearable biomedical monitoring devices, and so on. Notably, perovskite nanostructures have emerged as a promising material for flexible PDs due to their distinctive features, such as a large optical absorption coefficient, tunable band gap, extended photoluminescence decay time, high carrier mobility, low defect density, long exciton diffusion lengths, strong self-trapped effect, good mechanical flexibility, and facile synthesis methods. In this review, we first introduce various synthesis methods for perovskite nanostructures and elucidate their corresponding optical and electrical properties, encompassing quantum dots, nanocrystals, nanowires, nanobelts, nanosheets, single-crystal thin films, polycrystalline thin films, and nanostructured arrays. Furthermore, the working mechanism and key performance parameters of optoelectronic devices are summarized. The review also systematically compiles recent advancements in flexible PDs based on various nanostructured perovskites. Finally, we present the current challenges and prospects for the development of perovskite nanostructures-based flexible PDs.
Disentangling the intrinsic relaxivities of highly purified graphene oxide
Authors: Fioravanti Giulia , Galante Angelo , Fattibene Paola , Torrieri Di Tullio Laura , Colacicchi Silvia , De Thomasis Giorgio , Perrozzi Francesco , De Berardinis Niccolò , Profeta Gianni , Ottaviano Luca , Alecci Marcello 
Published: March 2024

Abstract
The chemistry of contrast agents (CAs) for magnetic resonance imaging (MRI) applications is an active area of research and, in recent work, it was shown that CA-based graphene oxide (GO) has valuable properties for biomedical uses. GO has a potential as MRI CAs thanks to several functionalities, like its ability to penetrate tissues and cell membranes, as well as easy coupling with therapeutic agents, therefore showing the potential for both a diagnostic and therapeutic role. In this study, we performed a thorough cleaning of the GO sample (synthesized using a modified Hummers method), minimizing the amount of residual manganese down to 73 ppm. Using a wide range of physical–chemical methods (morphology, chemical composition, elemental analysis, spectroscopies, and imaging), we characterized the intrinsic longitudinal and transverse relaxivities of highly purified GO nanosheets. X-band electron paramagnetic resonance allowed to recognize the paramagnetic species involved, and 1.0 T MRI was used to disentangle the relative contributions to the MRI contrast of pristine GO nanosheets arising from structural defects and residual paramagnetic manganese impurities embedded in the nanomaterial. Although experiments show that the MRI relaxivity of GO nanosheets arises from the cumulative effect of structural defects and paramagnetic impurities, we conclude that the latter contribution to the longitudinal and transverse relaxivities becomes irrelevant for highly purified (pristine) GO. This novel finding clearly demonstrates that, apart from trivial manganese inclusion, pristine GO produces an inherent MRI response via structural defects, and therefore it is on its own a suitable candidate as MRI contrast agent.
Optical properties of two-dimensional tin nanosheets epitaxially grown on graphene
Authors: Bonaventura Eleonora , Martella Christian , Macis Salvatore , Dhungana Daya S , Krotkus Simonas , Heuken Michael , Lupi Stefano , Molle Alessandro , Grazianetti Carlo 
Published: March 2024

Abstract
Heterostacks formed by combining two-dimensional materials show novel properties which are of great interest for new applications in electronics, photonics and even twistronics, the new emerging field born after the outstanding discoveries on twisted graphene. Here, we report the direct growth of tin nanosheets at the two-dimensional limit via molecular beam epitaxy on chemical vapor deposited graphene on Al2O3(0001). The mutual interaction between the tin nanosheets and graphene is evidenced by structural and chemical investigations. On the one hand, Raman spectroscopy indicates that graphene undergoes compressive strain after the tin growth, while no charge transfer is observed. On the other hand, chemical analysis shows that tin nanosheets interaction with sapphire is mediated by graphene avoiding the tin oxidation occurring in the direct growth on this substrate. Remarkably, optical measurements show that the absorption of tin nanosheets exhibits a graphene-like behavior with a strong absorption in the ultraviolet photon energy range, therein resulting in a different optical response compared to tin nanosheets on bare sapphire. The optical properties of ultra-thin tin films therefore represent an open and flexible playground for the absorption of light in a broad range of the electromagnetic spectrum and technologically relevant applications for photon harvesting and sensors.
Thermal scanning probe and laser lithography for patterning nanowire based quantum devices
Authors: Shani Lior , Chaaban Jana , Nilson Alec , Clerc Eliott , Menning Gavin , Riggert Colin , Lueb Pim , Rossi Marco , Badawy Ghada , Bakkers Erik P A M , Pribiag Vlad S 
Published: March 2024

Abstract
Semiconductor nanowire (NW) quantum devices offer a promising path for the pursuit and investigation of topologically-protected quantum states, and superconducting and spin-based qubits that can be controlled using electric fields. Theoretical investigations into the impact of disorder on the attainment of dependable topological states in semiconducting nanowires with large spin–orbit coupling and g-factor highlight the critical need for improvements in both growth processes and nanofabrication techniques. In this work, we used a hybrid lithography tool for both the high-resolution thermal scanning probe lithography and high-throughput direct laser writing of quantum devices based on thin InSb nanowires with contact spacing of 200 nm. Electrical characterization demonstrates quasi-ballistic transport. The methodology outlined in this study has the potential to reduce the impact of disorder caused by fabrication processes in quantum devices based on 1D semiconductors.
Harnessing multi-stable piezoelectric systems for enhanced wind energy harvesting
Authors: Liu Xiaohui , Tao Yan , Jia Hexuan , Dai Fuhong 
Published: March 2024

Abstract
With the ongoing evolution of microelectronic devices toward lower power consumption, the utilization of piezoelectric materials for energy harvesting from wind-induced vibrations has garnered considerable attention. This study employs a combined approach involving finite element analysis and experiments to investigate the energy harvesting efficiency of the multi-stable piezoelectric wind energy harvester (MPWEH) and compares its performance with two alternative systems. The MPWEH demonstrates higher strains in both the x and y directions during reciprocating cross-well vibrations, establishing its superior energy harvesting efficiency compared to the alternative systems. Notably, at a wind speed of 8 m s−1, the MPWEH generates an output power nearly six times higher than local bistable piezoelectric energy harvester (LBPEH). The MPWEH achieves the maximum power density of 9.8125 mW cm−3, whereas the LBPEH registers the power density of 1.625 mW cm−3. The experimental results indicate that, under the optimal load resistance of 40 kΩ and a wind speed of 14 m s−1, the MPWEH achieves a peak output power of 2.76 mW, with a power density of 17.25 mW cm−3. The versatile applicability of the MPWEH extends across various low-power consumption microelectronic devices, positioning it as a valuable candidate for empowering continuous monitoring sensors in diverse domains.
Infrared relative dielectric permittivity and refractive index on the spherical CdSe/ZnS heteronanocrystals with self-consistent field
Authors: Ortakaya Sami , Duque Carlos A 
Published: March 2024

Abstract
We deal with allowed-subband quantum states of two-electron in a semiconductor spherical core/shell quantum dot. Within framework of the infrared transitions, solving the Schrödinger-Poisson equation for repulsive interactions on the conduction-subbands, we obtain energy shifts in the absorption peaks of dielectric functions . The energy eigenvalues of the CdSe/ZnS nanocrystal have been computed as a function of the layer thicknesses through self-consistent field. The optical absorption transitions related to D
− and D
0 donor states, have been plotted considering linear dielectric permittivity. The obtained values of dielectric constant for CdSe monolayers are compared with 3D simulation results. Refractive index and absorption coefficient under 3.0 nm CdSe core radius have been also presented as a function of infrared photon energies.
Geometric anisotropic Semi-variogram analysis of ozone levels in Daerah Istimewa Yogyakarta, Indonesia
Authors: Siswanto Siswanto , Mirna Mirna , Heryanto Heryanto , Thamrin Sri Astuti 
Published: March 2024

Abstract
Identification of areas with high O3 levels that pose a risk to public health is necessary. Ordinary co-kriging is a geostatistical method that determines the value of primary variables at specific locations using weighted values of secondary parameters. A Semi-variogram is required to demonstrate the spatial correlation between the observations measured using this method. This study aims to determine the best Semi-variogram model and produce a map of the predicted O3 level interpolation results using the ordinary co-kriging method with a geometric anisotropic Semi-variogram. Data from the first quarter of 2018’s air quality monitoring in Daerah Istimewa Yogyakarta (DIY) were used to interpolate O3 levels, with 72 points for CO levels and 53 points for O3 levels. The results showed that the Semi-variogram model with the lowest mean error (ME) value is a gaussian model that differs from the spherical model by only 0.003. The Gaussian model has the lowest root mean squared error (RMSE), but it is only 0.002 different from the spherical model. However, by comparing the mean squared deviation ratio (MSDR) values of the three models, the spherical model’s MSDR value is the lowest. A comprehensive analysis showed that the spherical geometric anisotropic Semi-variogram model performed superior, resulting in the smallest minimum mean error (ME), root mean square error (RMSE) and minimum squared deviation ratio (MSDR) values. These findings highlight the potential of this approach to accurately map the spatial distribution of O3 and support evidence-based decision-making related to public health.
Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa2X4 (X = S, Se, Te) chalcogenides for solar cells and energy applications
Authors: Hedhili Fekhra , Hakami Jabir , Albaqawi Hissah Saedoon , Alahmad Waed , Mahmood Q 
Published: March 2024

Abstract
Spinels chalcogenides are an emerging aspirant for renewable energy which attained huge potential from the last decade. Therefore, the electronic structure, and mechanical properties are discussed by DFT approach. The Born stability criteria, and formation energies (−2.0, −1.98, −1.93) eV have been computed to assure mechanical, and thermodynamic stabilities. The ductile nature (υ > 0.26, and B/G > 1.75), hardness, Debye temperature, and lattice thermal conductivities are addressed in terms of elastic constants, and elastic modulus. The band gaps (2.0, 1.7, 0.85) eV for CdLa2X4 (X = S, Se, Te) have been calculated from band structures. The polarization of light, absorption bands in visible regions, refractive index, and reflection of light energy have made them significantly important materials for solar cells. Furthermore, transport characteristics are revealed by Seebeck coefficient, electrical & thermal conductivities, and figure of merit (ZT). The ZT has values 1.0, 0.80, and 0.66 at room temperature for CdLa2X4 (X = S, Se, Te) which increases their significance for thermoelectric devices.
Electro-optic and thermoelectric reponse of SiP and SiAs for solar and thermal applications
Authors: Asghar Mazia , Waheed Hafiza Sumaira , Shabbir Aima , Ullah Hamid , Khan M Junaid Iqbal , Anjum Faiza , Noor N A , El-Sheikh Mohamed A , Iqbal M Waqas 
Published: March 2024

Abstract
Based on first-principles calculations, we investigated the electro-optic and thermoelectric properties of SiX (X = P, As). We find that the SiP (−0.17 eV/atom) is more favorable than SiAs (−0.12 eV/atom) due to higher formation energies. The dynamical stability is calculated from the phonon spectra, and the non-negative frequencies confirms the stable nature of SiX. Our calculated electronic band gap shows the semiconductor nature of the SiP, and SiAs with the band gap values of 2.33 eV, and 2.04 eV, respectively. Interestingly, the SiP possesses a direct band gap, which could be promising for optoelectronic devices. Additionally, we performed calculations by replacing P/As with Se atom, and observed that the semiconducting nature is alter to metallic one. The sharp peaks in the optical spectra confirms the electron transition from valance band to conduction band. The SiX (X = P, As) compound strongly absorbed light of energy 4.0 eV, which suggests it a potential candidate for solar cell applications. Furthermore, the compound exhibited the strong absorption of whole sun spectrum (ultra-violet to infra-red wave length), makes it capable for the applications in optical devices. Additionally, we have computed the thermoelectric properties using Boltztrap code. We have estimated the zT value 0.67 and 0.76 for SiP and SiAs, respectively. Both the SiAs and SiP exhibits a high zT, which could be applicable in the thermoelectric devices. Based on our calculated results, we anticipate that our studied materials could be an encouraging candidate for optical devices and thermoelectric devices.
Thermal transitions in a one-dimensional, finite-size Ising model
Authors: Stepanyan Varazdat , Tzortzakakis Andreas F , Petrosyan David , Allahverdyan Armen E 
Published: March 2024

Abstract
We revisit the one-dimensional ferromagnetic Ising spin chain with a finite number of spins and periodic boundaries, deriving analytically and verifying numerically its various stationary and dynamical properties at different temperatures. In particular, we determine the probability distributions of magnetization, the number of domain walls, and the corresponding residence times for different chain lengths and magnetic fields. While we study finite systems at thermal equilibrium, we identify several temperatures similar to the critical temperatures for first-order phase transitions in the thermodynamic limit. We illustrate the utility of our results by their application to structural transitions in biopolymers having non-trivial intermediate equilibrium states.
Soft octopus-inspired suction cups using dielectric elastomer actuators with sensing capabilities
Authors: Jamali Armin , Mishra Dushyant Bhagwan , Goldschmidtboeing Frank , Woias Peter 
Published: March 2024

Abstract
Bioinspired and biomimetic soft grippers are rapidly growing fields. They represent an advancement in soft robotics as they emulate the adaptability and flexibility of biological end effectors. A prominent example of a gripping mechanism found in nature is the octopus tentacle, enabling the animal to attach to rough and irregular surfaces. Inspired by the structure and morphology of the tentacles, this study introduces a novel design, fabrication, and characterization method of dielectric elastomer suction cups. To grasp objects, the developed suction cups perform out-of-plane deflections as the suction mechanism. Their attachment mechanism resembles that of their biological counterparts, as they do not require a pre-stretch over a rigid frame or any external hydraulic or pneumatic support to form and hold the dome structure of the suction cups. The realized artificial suction cups demonstrate the capability of generating a negative pressure up to 1.3 kPa in air and grasping and lifting objects with a maximum 58 g weight under an actuation voltage of 6 kV. They also have sensing capabilities to determine whether the grasping was successful without the need of lifting the objects.
Utilizing synoptic scale climate data within sustainable tourism development
Authors: Perkins David R. , Phuyal Susan 
Published: March 2024

Abstract
Tourism has great potential to be used as a tool towards achieving sustainable development. The appropriate implementation of sustainable tourism methods helps to establish local economic viability in concert with attentive treatment of both social and environmental systems. Maintaining such environmental and social integrity within a location is often the basis by which tourism demand is generated—drawing tourists from across the world. In this paper, we specifically address the use of climate information within Nepal where tourism in the Himalayas is driven by the human-nature interface and the unique culture which has developed in this alpine environment. In doing so, we highlight how focusing on a synoptic scale climatological analysis can provide valuable information within a sustainable tourism development context. Literature has established that tourists operate in ‘realms’ of climatic comfort that might be readily described through synoptic-scale atmospheric phenomena using descriptors such as ‘humid cool’ and ‘warm humid’ conditions. Variables of the Gridded Weather Typing Classification (GWTC-2) are used to describe local climate and climate change. Analyzing weather and climate data within a tourist-centric synoptic-scale context provides a new perspective to more fully understand sustainable development within the weather, climate, and tourism nexus.
Analysis of consumer preferences and attitudes towards sustainable consumption of plastic beverage packaging in Malaysia
Authors: Bakar Khalilulnisha Abu , Mohamed Ahmad Fariz 
Published: March 2024

Abstract
One of the challenges towards promoting plastic packaging sustainability in Malaysia is the lack of awareness on plastic consumption among consumers and the absence of Extended Producer Responsibility (EPR) scheme. Consumers play a significant role in contributing towards better management of plastic packaging. Using plastic beverage packaging as an example, a survey was carried out on consumer willingness to participate in an Extended Producer Responsibility (EPR) system and pay for a more sustainable packaging option. Some open-ended questions were also applied to implore on factors that would encourage consumer participation in sustainable plastic packaging management. A majority of the respondents gave positive responses towards their willingness to participate and willingness to pay for a more environmentally friendly plastic packaging options. The results also showed that the respondents will be more encouraged to participate if it is convenient for them to do so, but also raised the need for a better management system, infrastructure, mindset, awareness and education to be in place. The results provided valuable insights to both policy makers and the fast-moving consumer goods (FMCG) sector in determining the way forward for solid waste management in general and plastic packaging policy and management in particular.
Exploring Best Practices for New Climate Change Policy and Law Program
Authors: Mohamad Ani Munirah , Ahmad Wan Norhayati Wan , Anuar Haslinda Mohd , Wahab Harlida Abdul , Mohsin Mohamad Farhan Mohamad 
Published: March 2024

Abstract
Climate change law is seldom taught formally as a program at institutions of higher education. Hence, it is unclear as to how climate change law lessons should be delivered. This paper focuses on the exploration of best practices for new climate change policy and law program. The study engaged in purely qualitative methodology, involving interviews with 10 experts in environmental law and climate change from academia and industry partners, as well as environmental law alumni. The collected data was analysed in ATLAS.ti software version 22 using thematic analysis approach. The study found that among the recommended best practices of teaching delivery methods for the program are service learning (SL), global learning, article contributions to newspapers and project-based learning (PBL). SL involves the implementation of credited projects by the students for the benefit of a targeted community focusing on climate change issues. Meanwhile, global learning involves collaborative events with member institutions within Malaysia or abroad, in which experts, academia and industry practitioners can join and participate for sharing of experiences, skills and knowledge on climate change current issues and challenges. Students can also be encouraged to write their articles to be submitted to newspaper portals, either printed or online sites. Additionally, lecturers can prompt specific PBL projects to the students, in which students are to “carry out” climate change-related projects in this innovative and inspiring learning strategy. The final strategy is to encourage students to implement roleplay in classes, aiming at giving simulation experiences in solving climate change issues. Hopefully, this paper will become a catalyst for future studies on climate change curriculum development, particularly on teaching delivery practices. The findings are highly pertinent to United Nation’s Sustainable Development Goal SDG13 on climate action. In the broader context, the findings of the study will be a great contribution towards the attainment of sustainability efforts on climate action, particularly in capacity building of the people on teaching delivery methods of climate change policy and law.