bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cordless Miniature Robots from Centimeter to Nanometer Scale: Recent Progress and Future Challenges in Biomedicine Field
Authors: Wang Xiaowen , Gao Yingnan , Liu Changyou , Wang Yaping , Liu Anqin , Yang Wenguang 
Published: December 2024

AbstractThe use of robots in healthcare holds promise for improving the quality of life. The miniaturization of robots enables them to work in complex liquid environments in narrow areas of human body. Cordless robots have strong mobility and can reach inaccessible areas; so, they are of great significance in precision and personalized medicine fields. Miniature robots can be divided into two categories: one is robots with millimeter to centimeter size, which are slightly larger in size. It can be equipped with control, monitoring, communication, and other functional modules, realizing imaging monitoring, targeted drug delivery, and other functions. The other is robots with nanometer to micrometer size, which are generally driven by external physical fields due to small size. They are mainly used in imaging, diagnosis, surgery, and drug delivery. However, when miniature robots are used in clinical applications, problems such as power, longevity, and security still need to be considered. This article reviews the driving mechanisms and position technology of miniature robots. In addition, possible solutions to the current clinical challenges are proposed, exploring structures and functions required for future development. This article provides a reference for robots and development of precision medicine.
Highly Dissymmetric Circularly Polarized Luminescence via Multimode Chirality Enhancement in Hierarchically Ordered Liquid Crystal Films
Authors: Pawlak Mateusz , Pierzchała Adam , Benchimol Elie , Tessarolo Jacopo , Rebholz Lukas , Krstić Marjan , Zerulla Benedikt , Fernandez‐Corbaton Ivan , Jávorfi Tamás , Siligardi Giuliano , Clever Guido H. , Rockstuhl Carsten , Lewandowski Wiktor 
Published: December 2024

AbstractCircularly polarized luminescence (CPL) in purely organic materials is limited by the almost exclusively electric nature of electronic transitions. Resolving this problem is possible through structuring organic materials at dimensions comparable to the wavelength of visible light. Here, the study explores the use of thin films made of chiral organic nanotubes for the enhanced induction of CPL. The study first performs multi‐scale modeling of the chiroptical properties of organic nanotubes using the T‐matrix method. Combined with chiroptical measurements, including Mueller matrix polarimetry, the study discusses the chiroptical properties of organic materials within the frames of their multi‐scale structuring. When embedding aggregation‐induced fluorogens (AIEgens) into the structured films, composites featured with gigantic glum factors reaching ≈10−1 are obtained. Importantly, a series of control experiments is performed to exclude common parasitic effects that can lead to the apparent CPL signals. The enhanced chiroptical properties of the composite films of organic nanotubes and AIEgens enable visual discrimination of their handedness both in the absorption and emission realms. The uncovered multi‐mode enhancement of CPL directs future endeavors for anticounterfeiting or holography applications.
Lanthanide‐Tetradentate Schiff Base‐PMMA Composite Films for Tunable White Light Emission
Authors: Sarkar Uttam , Singh Manjeet , Adak Mrinal K. , Bhattacharya Sagarika 
Published: December 2024

AbstractMulticolor emissive Schiff base lanthanide Poly(methyl methylacrylate) [PMMA] composite films are fabricated for white light generation. Three isostructural lanthanides (III) complexes [EuIII2(L)2(NO3)2(dmf)2 (1), TbIII2(L)2(NO3)2(dmf)2 (2) and GdIII2(L)2(NO3)2(dmf)2 (3)] are synthesized, characterized from the ligand obtained by 1:1 condensation of salicylaldehyde and 2‐(2‐Aminoethoxy)ethanol, H2L. The photoluminescent studies revealed pure blue, green, and red color emissions from GdIIIL, TbIIIL, and EuIIIL complexes, although the central metal centers have identical dodecahedron geometry. Intensified ligand emission is attested for the blue emitter‐GdIIIL complex while the “antenna effect” is witnessed for green TbIIIL and red EuIIIL complexes. Co‐doping these multicolor luminescent emitters into the PMMA polymer the intensity of luminescence improved. A conscientious combination of red‐EuIIIL with green‐TbIIIL Lanthanide metal Schiff base complexes in a specified concentration, distinct white light is accomplished for the first time with Commission Internationale de I’Éclairage (CIE) values of 0.33, 0.30, very close to the ideal white emitter. The newly developed lanthanide‐Schiff base‐PMMA composite films are transparent and highly desired materials in optoelectronics, microscopy, and sensing.
Exploring Strategies for Performance Enhancement in Micro‐LEDs: a Synoptic Review of III‐V Semiconductor Technology
Authors: Mouloua Driss , Martin Michael , Beruete Miguel , Jany Christophe , Hassan Karim , Baron Thierry 
Published: December 2024

AbstractIII‐V semiconductors, known for their optoelectronic properties and versatile engineering capabilities, play a crucial role in the fabrication of Micro light‐emitting diodes (Micro‐LEDs). Recent advances in research underscore that the optoelectronic performance of Micro‐LEDs can be significantly enhanced using various strategies, such as passivation and distributed Bragg reflectors (DBRs), the incorporation of metamaterials and plasmonics, and the integration of 2D materials. By implementing these diverse integration strategies, Micro‐LEDs based on III‐V semiconductors have demonstrated remarkably high External Quantum Efficiency (EQE) spanning orders of magnitude across the spectrum, from deep‐ultraviolet (DUV) to the long‐wavelength infrared (LWIR) regions. In this review, the main III‐V semiconductors used in Micro‐LEDs are discussed. Additionally, an overview of the fabrication processes and integration techniques relevant to Micro‐LED‐based technologies is provided. Furthermore, the factors that influence the figure of merit in a wide range of Micro‐LEDs based on III‐V semiconductors, taking into account quantum efficiency, emission wavelength, and electrical injection, are examined. Finally, the discussion highlights several applications of Micro‐LEDs, provides a summary, and outlines future directions for the development of Micro‐LEDs based on III‐V semiconductors.
Donor‐Void‐Acceptor Type TADF Emitters with Asymmetric Donors for Highly Efficient Deep Blue OLEDs
Authors: Mei Yongqiang , Li Jiuyan , Liu Di , Xu Min , Li Yixue , Wan Huihui 
Published: December 2024

AbstractTwo asymmetric donor‐acceptor‐donor’ (D‐A‐D’) type deep blue thermally activated delayed fluorescence (TADF) emitters, namely PAO‐1 and PAO‐2, are developed with highly rigid 10‐(pyridin‐2‐yl)acridin‐9(10H)‐one (PAO) as acceptor (A). PAO is characterized by the 3,6‐sites carbon atoms that are void to its own HOMO and the deeper HOMO‐2 of PAO acceptor rather than its HOMO is involved in the HOMO of the TADF emitters. Such D‐void‐A connecting mode favors to lower the molecular HOMO and generate short‐wavelength fluorescence by enlarging the bandgap of the TADF emitters. Two different carbazole donors are utilized in the asymmetric D‐A‐D’ type emitters, which not only keep the deep blue emission but also enhance the oscillator strength (f) for faster radiative transition rates (krs > 108 s−1) and slightly slow the intersystem crossing (ISC) rates (kISCs) and reverse ISC (kRISCs) than the symmetric PAO‐0, which can reduce exciton trap in the conversion cycles between singlet and triplet excitons. The deep blue OLEDs of PAO‐1 and PAO‐2 exhibit external quantum efficiencies (EQEs) of 32.5% and 30.1% with CIE (0.15, 0.10) and (0.15, 0.11) and low‐efficiency roll‐offs. These findings provide a design strategy for developing highly efficient deep‐blue TADF emitters.
SiB Monolayers‐Based Gas Sensor: Work Function and Conductometric Type Gas Sensors
Authors: Mohammadi Mahnaz , Pakizeh Esmaeil 
Published: December 2024

AbstractThe air pollution and the rising emission of dangerous gases into the atmosphere are recently worrisome. In order to protect the humans and animals life's, it is crucial to monitor these harmful gases. Gases like HCHO, N2, NH3, CO2, CH4, CO, and SO2 are dangerous for human health. As a result, gas sensors have been attracted significant interest as a means to effectively detect and adsorb these pollutants. In this study, the adsorption behavior of several common gas molecules on SiB monolayers has been investigated using density functional theory (DFT). The study focuses on examining the most stable configurations, adsorption energies, charge transfer, and electronic properties of selected gas molecules on the SiB surface. The gas adsorption behavior on SiB monolayers has been considered for use in work function type gas sensors and conductometric sensor devices. The work function of the SiB layer is found to vary between 4.06% and 27% after exposure to the selected gas molecules, indicating its high sensitivity to these gases. The current–voltage (I–V) characteristics exhibit distinct responses for different gas adsorptions on the SiB surface, particularly for HCHO, CO, and CO2 gas molecules. Furthermore, the high sensitivity of SiB to gas adsorption open up possibilities for the improvement of gas sensing devices for monitoring and detecting harmful gases in various environments
Intrinsic Mechanical Parameters and their Characterization in Solid‐State Lithium Batteries
Authors: Hao Shuai , Zhang Qianyi , Kong Xiangkang , Wang Zhaoxiang , Gao Xue‐Ping , Shearing Paul R. 
Published: December 2024

AbstractThe most critical failures in solid‐state batteries, including interfacial detachment, cracks, and dendrite growth are coupled with or fundamentally belong to a class of overarching phenomena that may be broadly defined as mechanical processes. However, current research on mechanical processes is far from sufficient, and is in its infancy compared with studies of improving electrolyte ionic transportation and electrochemical stabilities. Even the physical significance of many mechanical parameters has not been clarified in this field and the corresponding characterization methods have not yet been widely established. Herein, this review focuses on the intrinsic mechanical parameters associated with the design and operation of solid‐state batteries and their characterization. Beginning with an overview of mechanical processes, key concepts in the context of solid‐state batteries (SSB) are defined. Next, the various characterization methods that have been applied to SSBs are described in detail, and the key results are reviewed. Additional methods applied in orthogonal areas are also included to emphasize the possible translational impact on the solid‐state battery field. Finally, perspectives on the challenges and development trends in mechanical characterization are proposed for further development in solid‐state batteries.
Multicomponent Anodes Based on Amorphous ZnP2 for Fast‐Charging/Discharging Lithium‐Ion Batteries
Authors: Liu Lingwen , Xie Huixian , Zheng Yunshan , Hui Kwan San , Sun Yuanmiao , Cheng Hui‐Ming , Hui Kwun Nam 
Published: December 2024

AbstractHigh‐capacity phosphorus‐based anodes have shown promise for fast‐charging/discharging lithium‐ion batteries, but have a low conductivity, and undergo significant volume changes during use, resulting in a poor rate performance and short cycle life. To overcome these limitations, the study has synthesized a hybrid material comprising amorphous ZnP2 incorporated with in situ formed amorphous zinc phosphate along with phosphorus and carbon (a‐ZnP2/Zn3(PO4)2/P/C) by a one‐step high‐energy ball milling process. The porous structure and isotropic nature of the hybrid amorphous material improve Li+ accessibility, reaction kinetics, and structural stability during fast lithiation/delithiation. Particularly, the hybrid amorphous ZnP2 electrode shows stable cycling performance over 2200 cycles at 5 A g−1 (3 C), retaining 92.3% of its maximum capacity to 985 mAh g⁻¹, and demonstrating high‐rate charging/discharging capability at 10/20 A g−1 (6 C/12 C) over 2000/2700 cycles to 734/592 mAh g−1. It is found that a reduced electrochemical polarization, large pseudocapacitive contribution, improved Li+ diffusion kinetics and more stable electrode‐electrolyte interface of the hybrid electrode contribute to its outstanding performance. This groundbreaking work paves a way for high‐performance multicomponent phosphorus‐based anodes for fast‐charging/discharging LIBs.
A systematic approach to defining a unit cell for fluid dynamics in packed beds with low tube‐to‐particle diameter ratio
Authors: Dorantes‐Landa Dalia N. , Hernandez‐Aguirre Alberto , Ricardez‐Sandoval Luis , Huerta‐Ochoa Sergio , Castillo‐Araiza Carlos O. 
Published: December 2024

AbstractThis work develops an approach to identify the suitable representative volume (unit cell) that captures fluid dynamics in beds packed with spheres or cylinders with a dt/dp ≤ 10, by describing radial void fraction and velocity profiles at particle Reynolds numbers between 5 and 100. Rigid‐body simulations were used to construct synthetic packings, while velocity profiles were obtained from particle‐resolved simulations. This methodology, rooted in the similitude of fluid dynamics between beds of different lengths, determines the minimum length (or number of particles in a bed) required for the unit cell to accurately describe the void fraction and velocity profiles. Defining such a unit cell for fluid dynamics not only reduces computational effort but also opens avenues for its use in multiscale techniques to develop reliable pseudo‐continuous models, which is currently the bottleneck in the design and optimization of wall‐cooled packed‐bed reactors in industrial scenarios.
Sensitive “On‐Off” Fluorescent Sensor From N‐Doped Carbon Dots for Fe3+ Detection and Anticounterfeiting Applications
Authors: Wan Zherui , Cui Xiaoxu , Li Zhonghao , Zhong Haorui , Liu Yilei , Liang Yesheng , Zhang Zhiyong , Yang Guang 
Published: December 2024

ABSTRACTHerein, a kind of N‐doped fluorescent carbon dots (N‐CDs) were prepared by using melamine and carboxymethyl cellulose (CMC) as precursors through a straightforward hydrothermal method. The designed sensor displayed a uniform nanoscale distribution, excellent hydrophilicity, and strong fluorescence emission with a fluorescence quantum yield of 37.98%. Moreover, the N‐CDs could be utilized for Fe3+ detection by the fluorescence “On–Off” transition via the mechanism of internal filtration effect (IFE) and static quenching process. Two good linear relationships within the concentrations of Fe3+ from 10 to 100μM and 100 to 500 μM could be obtained, which indicated that the “On–Off” fluorescent sensor could quantitative analysis of Fe3+ and the calculated detection limit (LOD) was 0.510 μM (3σ/slope). Additionally, the N‐CDs could be used for the detection of Fe3+ in the solid phase based on the fluorescence “On–Off” strategy, which is promising for anticounterfeiting application.
Effects of Product Transformation Salience on Green Brand Coolness and Green Purchase Intentions in Vietnam: Consumer Traceability Knowledge as Moderator
Authors: Le Truc Thanh , Tang‐Le Hung Thanh 
Published: December 2024

ABSTRACTDrawing on the attribution and signaling theories, this study aims to investigate the associations between product transformation salience (PTS), perceived green brand coolness (PGBC), green purchase intention (GPI), and consumer traceability knowledge (CTK) in Vietnam. We assess the research model by implementing partial least squares–structural equation modeling with a sample of 245 Vietnamese consumers. PTS positively affects GPI and PGBC, whereas PGBC positively impacts GPI and positively mediates the impact of PTS on GPI. CTK negatively moderates the effect of PTS on GPI, whereas the mediating impact of PGBC on the association between PTS and GPI is not conditional on CTK. PTS messaging is effective in increasing the perceived coolness of the brand and Vietnamese consumers' intention to purchase green goods. However, as consumers become more versed in digitally tracing products, the positive impact of PTS messaging on their GPI weakens. The study provides theoretical and managerial implications.
Lotus and Poikilotherm Inspired PPy/PDMS@Nonwoven Fabric Sorbent with Superior Photothermal Effects for the Cleanup of High‐viscous Crude Oil†
Authors: Fu Hiroshi , Chen Yang , Zhang Tong , Wang Xi , Zhang Songnan , Huang Jianying , Zhang Di , Qian Xiaoming , Lai Yuekun 
Published: December 2024

Comprehensive SummaryThe frequent occurrence of oil spills not only results in the waste of petroleum resources, but also poses a serious threat to the marine ecological environment. Considering the large amount of crude oils with high viscosity, it is urgent to develop a sorbent capable of efficiently reducing the viscosity for the cleanup of oil spills. Inspired by the “lotus effect” and “poikilotherm which utilize the solar energy for thermoregulation”, the low surface energy material polydimethylsiloxane (PDMS) and polypyrrole (PPy) were loaded over the island nonwoven fabric to fabricate a novel crude oil sorbent material. The nonwoven fabric achieved an efficient photothermal conversion. Wherein, the fluorine‐free PDMS was used to hydrophobically modify the nonwoven fabric, endowing it with excellent oil‐water separation performance, with a separation efficiency of up to 95%. After 10 cycles, the separation efficiency of PPy/PDMS modified nonwoven fabric (PPy/PDMS@NF) was still above 90%, demonstrating superior recyclability. In addition, the PPy/PDMS@NF possessed the self‐cleaning capabilities. Under light conditions, the PPy/PDMS@NF was rapidly heated up, reducing the viscosity of crude oil and enabling the effective recovery of oil spills. Under one sun illumination (1.0 kW·m–2), the surface temperature of the PPy/PDMS@NF reached 60.7 °C, and its sorption capacity for high‐viscosity crude oil reached 7 gcrude oil·gsorbent–1. Thanks to its environmental friendliness and excellent sorption capacity, this work provides a new option for dealing with the high‐viscosity marine oil spills.
Impact of Convulsive Maternal Seizures on Fetus Dynamics
Authors: Toma Milan , Mayer Jonathan , Bekbolatova Molly , Devine Tim , Ryo Paula 
Published: December 2024

ABSTRACTThe study findings demonstrate that the amniotic fluid plays an important role in protecting the fetus during convulsive maternal seizures. The amniotic fluid was found to be an effective buffer, significantly reducing the transfer of kinetic energy to the fetus during these events. This highlights the sufficient protection provided by the amniotic fluid in such circumstances. The research was conducted using a model that simulates the complex interactions between a pregnant woman's anatomy, the uterus, and the fetus immersed in amniotic fluid. Key parameters such as speed, acceleration, and Euler angles were captured using sensors and used as input for the computational model in the simulations. The results showed that during an oscillatory movement, which is characteristic of a maternal seizure, the fetus and placenta exhibit variable kinematics relative to the uterus. Despite these variations, the amniotic fluid was found to be a significant protective buffer. The discovery of the protective role of the amniotic fluid during maternal seizures provides valuable insights for obstetricians. It can help in managing patient care during such pregnancy complications, emphasizing the importance of the amniotic fluid in fetal protection.
Value‐Belief and Value‐Identity Norms in Ethical Food Consumption: Investigating the Influence of Worker‐Friendly Labels in Italy
Authors: Mirabella Claudio , Borsellino Valeria , Galati Antonino , Schimmenti Emanuele , Caracciolo Francesco 
Published: December 2024

ABSTRACTThis study aims to explore the main behavioral drivers influencing the consumption of ethical food products in Italy, with a specific focus on customer purchase intentions and choices for foods that adhere to workers' rights. The issue of workers' exploitation in Italian agriculture is a pressing concern, frequently highlighted in media investigations. To address this aim, the study compares three theoretical models to identify the most effective in providing the most comprehensive explanation of the phenomenon under investigation. The theories of value‐belief‐personal norms (VBN) and value‐identity‐personal norms (VIP), along with a hybrid of these models, were examined using Partial Least Squares Structural Equation Modelling. The findings reveal that factors such as self‐identity, awareness of consequences, and ascription of responsibility are significant predictors of the purchasing behavior regarding food products that respect workers' rights. Notably, the integrated VBN and VIP model (VBN‐VIP) demonstrates the highest level of predictive accuracy. This research contributes to the literature on ethical consumption by offering robust empirical evidence supporting these theoretical frameworks. Similarly, food companies will benefit from gaining a deeper understanding of consumer behavior in relation to ethical practices, particularly those concerning workers' rights. By emphasizing their commitment to ethical standards, food companies can potentially influence consumer attitudes and intentions more effectively.
The influence of farm connectedness on foot‐and‐mouth disease outbreaks in livestock
Authors: Contina Jean B. , Seibel Rachel L. , Chaulagain Bhim , Mills Karasi B. , Tildesley Michael J. , Mundt Christopher C. 
Published: December 2024

AbstractWe applied a previously published livestock foot‐and‐mouth disease (FMD) model to estimate host connectivity using a transmission kernel based on contact tracing and measured subsequent to an animal movement ban in the 2001 United Kingdom epidemic. Connectivity within county‐level farm landscapes were evaluated by considering the transmission kernel, host species composition, farm‐level susceptibility, farm‐level transmissibility, and distances between farms. The objectives were to (1) determine the impact of connectivity of the initially infected farm on the size of FMD outbreaks in four counties of differing connectivity; (2) compare FMD spread in counties that have different mean farm connectivity levels over all farms in the county; and (3) determine how connectivity relationships affect an example control measure. We used a spatially explicit stochastic model to simulate FMD outbreaks on livestock farm operations in four UK counties. Nine farms were selected for seeding infection, with each representing a different level of farm connectivity, measured by the sum of transmission rates between itself and all other farms. In each simulated outbreak, one farm was seeded with infection. In addition to the culling of infected premises within 24 h of being reported, as implemented in the FMD model, control of epidemic spread was implemented by culling farms within 1 and 3 km radii around infected premises. Increased levels of connectivity of the initially infected farm had a significant incremental effect on the epidemic length and the number of farms, cattle, and sheep lost. However, at higher levels of farm connectivity, these incremental effects were observed to plateau. Results showed significant variation in the level of overall farm connectivity between the counties, and counties with higher overall farm connectivity experienced increased simulated losses. Connectivity of the initially infected farm and mean connectivity among all farms in a county were strongly associated with effects of cull size, with disease control more effective at lower levels of farm connectivity. Host connectivity provides early information on the host‐pathogen landscape and could be used as an assessment tool for predicting epidemic risks, as well as enabling preemptive control strategies to limit the size of disease outbreaks.