bluuebunny/crossref_metadata_2025_split huggingface dataset:
On‐demand Reprogrammable Mechanical Metamaterial Driven by Structure Performance Relations
Authors: Wei Yuling , Pan Fei , Lin Xin , Zhang Lei , Xiang Jinwu , Chen Yuli 
Published: December 2024

AbstractThe physical reprogrammability of metamaterials provides unprecedented opportunities for tailoring changeable mechanical behaviors. It is envisioned that metamaterials can actively, precisely, and rapidly reprogram their performances through digital interfaces toward varying demands. However, on‐demand reprogramming by integration of physical and digital merits still remains less explored. Here, a real‐time reprogrammable mechanical metamaterial is reported that is guided by its own structure‐performance relations. The metamaterial consists of periodically tessellated bistable building blocks with built‐in soft actuators for state switching, exhibiting rich spatial heterogeneity. Guided by the pre‐established relations between state sequences and stress–strain curves, the metamaterial can accurately match a target curve by digitally tuning its state within 4 s. The metamaterial can be elastically tensioned and compressed under a strain of 4%, and its modulus tuning ratio reaches >30. Moreover, it also shows highly tunable shearing and bending performances. This work provides a new thought for the physical performance reprogrammability of artificial intelligent systems.
Inorganic/Inorganic Composites Through Emulsion Templating
Authors: Jiang Tianhui , Zhou Shitong , Hong Yinglun , Poloni Erik , Saiz Eduardo , Bouville Florian 
Published: December 2024

AbstractInorganic/inorganic composites are found in multiple applications crucial for the energy transition, from nuclear reactors to energy storage devices. Their microstructures dictate their properties from mass transport to fracture resistance. Consequently, there has been a multitude of processes developed to control them, from powder mixing and the use of short or long fibers, to tape casting for laminates up to recent 3D printing. Here, emulsions and slip casting are combined into a simpler, broadly available, inexpensive processing platform that allows for in situ control of composite microstructure while also enabling complex 3D shaping. This study shows that slip casting of emulsions triggers a two‐step solvent removal, opening the possibility for the conformal coating of pores. This process is showcased by producing strong and lightweight alumina scaffolds reinforced by a conformal zirconia coating. In addition, by manipulating magnetically responsive droplets, their distribution can be controlled, allowing for the formation of inorganic fibers inside an inorganic matrix in situ during slip casting. Using this approach, alumina has been reinforced with aligned metallic iron fibers to prepare composites with a work of fracture an order of magnitude higher than the pure ceramics.
A Novel Deer Antler‐Inspired Bone Graft Triggers Rapid Bone Regeneration
Authors: Li Shengyou , Yang Yujie , Yu Beibei , Gao Xueli , Gao Xue , Nie Shihao , Qin Tao , Hao Yiming , Guo Lingli , Wu Haining , Ma Teng , Zheng Yi , Geng Dan , Gao Jianbo , Xue Borui , Zhang Yongfeng , Yang Shijie , Wei Yitao , Xia Bing , Luo Zhuojing , Qiu Qiang , Huang Jinghui 
Published: December 2024

AbstractAdult mammals are unable to regenerate bulky bone tissues, making large bone defects clinically challenging. Deer antler represents an exception to this rule, exhibiting the fastest bony growth in mammals, offering a unique opportunity to explore novel strategies for rapid bone regeneration. Here, a bone graft exploiting the biochemical, biophysical, and structural characteristics of antlers is constructed. It is decellularized antler cancellous bone (antler‐DCB) to obtain a bone scaffold. Then, an antler‐based bone graft is constructed by integrating antler‐DCB with antler‐derived biological signals, delivered by extracellular vesicles (EVs) from antler blastema progenitor cells (ABPCs), a novel stem cells responsible for antlerogenesis is discovered. The antler‐based bone graft transformed bone marrow stromal cells into cells with an ABPC‐like phenotype and transcriptomic signature. In vivo, the antler‐based graft triggered rapid bone formation in a rat model, with doubled volume of newly formed bones than commercial DCBs. In addition, the antler‐based graft orchestrated a coordinated process of vascularization, neurogenesis, and immunomodulation during osteogenesis, partially imitating early antlerogenesis. These findings provide practical insights to develop a therapeutic intervention for treating severe bone defects.
Field‐Induced Polarization Rotation in Order–Disorder (K,Na)NbO3‐Based Ferroelectrics
Authors: Zhang Mao‐Hua , Thong Hao‐Cheng , Jiang Bo , Zhang Nan , Zhao Changhao , Wu Zhenghao , Zhou Tianhang , Wu Chaofeng , Yao Fangzhou , Bi Ke , Gong Wen , Xu Ben , Wang Ke 
Published: December 2024

AbstractPhase boundary is highly recognized for its capability in engineering various physical properties of ferroelectrics. Here, field‐induced polarization rotation is reported in a high‐performance (K, Na)NbO3‐based ferroelectric system at the rhombohedral‐tetragonal phase boundary. First, the lattice structure is examined from both macroscopic and local scales, implementing Rietveld refinement and pair distribution function analysis, respectively. The macroscopic phase coexistence at the phase boundary can be interchangeably rationalized with an average projection of collective local disordered units, exhibiting the order–disorder nature. The structural evidence of field‐induced polarization rotation is provided by the in situ synchrotron study. Theoretical studies including density functional theory calculation and molecular dynamics simulation also predict the polarization rotation mechanism. The simulation result reveals the variation of the degree of ordering during the polarization rotation as a key feature of the boosted electrical properties in the order–disorder ferroelectric system. The discovery provides meaningful insight into the design of ferroelectrics with enhanced physical properties.
1.4% External Quantum Efficiency 988 nm Light Emitting Diode Based on Tin‐Lead Halide Perovskite
Authors: Chen Jiale , Li Jiaxiong , Pau Riccardo , Chen Lijun , Kot Mordchai , Wang Han , Mario Lorenzo Di , Portale Giuseppe , Loi Maria Antonietta 
Published: December 2024

AbstractIn recent years, metal halide perovskite‐based light‐emitting diodes (LEDs) have garnered significant attention as they display high quantum efficiency, good spectral tunability, and are expected to have low processing costs. When the peak emission wavelength is beyond 900 nm the interest is even higher because of the critical importance of this wavelength for biomedical imaging, night vision, and sensing. However, many challenges persist in fabricating these high‐performance NIR LEDs, particularly for wavelengths above 950 nm, which appear to be limited by low radiance and poor stability. In this study, 3‐(aminomethyl) piperidinium (3‐AMP) is employed as a bulk additive for a tin‐lead halide perovskite. The 3‐AMP passivated films exhibit a significantly longer carrier lifetime of over 1 µs compared to neat films (0.43 µs) or to those passivated with a perfluorinated aromatic mono‐ammonium molecule (0.41 µs). Our optimized tin‐lead halide perovskite‐based LEDs show a single emission peak at 988 nm and an external quantum efficiency (EQE) of ≈1.4%.
Multidirectional Sliding Ferroelectricity of Rhombohedral‐Stacked InSe for Reconfigurable Photovoltaics and Imaging Applications
Authors: Liang Qingrong , Zheng Guozhong , Fan Shuaiwei , Yang Liu , Zheng Shoujun 
Published: December 2024

AbstractThrough the stacking technique of 2D materials, the interfacial polarization can be switched by an interlayer sliding, known as sliding ferroelectricity, which is advantageous in ultra‐thin thickness, high switching speed, and high fatigue resistance. However, uncovering the relationship between the sliding path and the polarization state in rhombohedral‐stacked materials remains a challenge, which is the key to 2D sliding ferroelectricity. Here, layer‐dependent multidirectional sliding ferroelectricity in rhombohedral‐stacked InSe (γ‐InSe) is reported via dual‐frequency resonance tracking piezoresponse force microscopy and conductive atomic force microscopy. The graphene/γ‐InSe/graphene tunneling device exhibits a tunable bulk photovoltaic effect with a photovoltaic current density of ≈15 mA cm−2 due to multiple polarization states. The generation of dome‐like domain walls is observed experimentally, which is attributed to the multidirectional sliding‐induced domains based on the theoretical calculations. Furthermore, the ferroelectric polarization in γ‐InSe ensures that the tunneling device has a high photo responsivity of ≈255 A W−1 and a fast response time for real‐time imaging. The work not only provides insights into the multidirectional sliding ferroelectricity of rhombohedral‐stacked 2D materials but also highlights their potential for tunable photovoltaics and imaging applications.
Bio‐Based and Degradable Food Packaging Materials: Where Are They?
Authors: Bauer Maria G. , Henkel Fabio , Gürer Ufuk , Lieleg Oliver 
Published: December 2024

AbstractIn the 1960s, the Swedish company Celloplast patented the first one‐piece plastic bag for packaging, and such plastic bags are heavily used all around the world until they are banned by some countries for environmental and sustainability reasons. Similarly, the EU banned certain single‐use plastic items in 2021—but food packaging is not part of this new regulation. And indeed, the majority of food packaging encountered today in the supermarket is still made from traditional, petrol‐based plastics. This review summarizes recent efforts in developing more sustainable alternatives to such petrol‐based food packaging. Different natural sources and production processes used to develop biodegradable, biopolymer‐based materials (bbMs) are discussed, which are categorized into natural bbMs, modified/plasticized bbMs, and plastic bbMs. An overview of the material properties of commercially available bbMs and bbMs developed in academic research projects is provided, and are compared with the properties of conventional, petrol‐based materials used for packaging. Furthermore, the role of academic and industrial contributors along the value chain of bbMs is highlighted and challenges that are responsible for the still limited occurrence of bbMs in daily lives are discussed.
Surficial Engineering of Cathodic Protection Strategy via P‐Doped NiCuV Monolithic Electrode for Enhanced Hydrogen Evolution Reaction in Alkaline Media
Authors: Han Huizhen , Tao Shiyi , Sun Yu , Luo Yuxin , Zhao Yulian , Mukherjee Somnath , Ma Yi , Bo Xin , Wang Zenglin 
Published: December 2024

AbstractThe concentrated alkaline passivates the monolithic electrode for electrochemical hydrogen evolution reaction (HER) in the alkaline water electrolysis (AWE) industry. Herein, a surface engineering of cathodic protection via one‐step co‐electrodeposition of P into NiCuV is presented and the achieved monolithic electrode exhibits an enhanced electrochemical catalytic behavior and constant durability with a feedback potential of −0.75 V versus the reversible hydrogen electrode (RHE) under an extremely high current density of 1A cm−2 for more than 270 h in alkaline media. The strategy of cathodic protection optimises the charge density redistribution by forming a phosphate surface layer. This preserves the particular metal (alloy) phase from oxidation while also modulating the heterarchical porous structure through P incorporation. Furthermore, an anion‐exchange membrane water electrolysis (AEMWE) with the NiCuVP serving as the HER catalyst and the NiFeCr LDH as the OER catalyst is constructed, which exhibits a current density of 912 mA cm−2 at 2 V at 80 °C with 30 wt.% KOH electrolytes. The resultant factors for activity and durability such as the electrochemical specific area, redox behaviors and surface hydrophilicity are also systematically discussed. This research presents a practical protocol for the anticorrosion and active enhancement of AWE and AEMWE cathodes.
An Acellular Platform to Drive Urinary Bladder Tissue Regeneration
Authors: Kini Mitali , Bury Matthew I. , Sharma Arun K. 
Published: December 2024

AbstractImpaired bladder compliance secondary to congenital or acquired bladder dysfunction can lead to irreversible kidney damage. This is managed with surgical augmentation utilizing intestinal tissue, which can cause stone formation, infections, and malignant transformation. Co‐seeded bone marrow mesenchymal stem cell (MSC)/CD34+ hematopoietic stem cell (HSPC) scaffolds (PRS) have been successful in regenerating bladder tissue. However, the acquisition of viable cells is challenging in the clinical setting. Here, the regenerative capacity of human MSC/CD34+ co‐cultured total condition media (TCM) is compared to media alone in immune‐competent rats augmented with PRS following partial cystectomy. Augmented bladders are instilled with media (control, n = 4) or TCM (n = 5) twice a week for 4 weeks. Regenerated tissue is analyzed for smooth muscle, urothelium, vascular, and peripheral nerve regrowth. Urodynamic (UDS) measures are performed pre‐ and 4 weeks post‐augmentation. The results demonstrate that TCM‐instilled grafts have greater muscle content, larger average urothelial widths, higher percent vascularization, and more robust neural infiltration post‐augmentation. UDS demonstrates greater percent bladder recovery in the TCM group, indicating functional improvement in bladder storage capacity. This study is the first to propose the use of cell‐free TCM as an alternative to traditional cell‐seeded scaffolds to promote bladder tissue regeneration.
Citrate‐Coated Iron Oxide Nanoparticles Facilitate Endothelialization of Left Ventricular Assist Device Impeller for Improved Antithrombogenicity
Authors: Haritz Jasper L. , Pflaum Michael , Güntner Hans J. , Katsirntaki Katherina , Hegermann Jan , Hehnen Felix , Lommel Michael , Kertzscher Ulrich , Arens Jutta , Haverich Axel , Ruhparwar Arjang , Wiegmann Bettina 
Published: December 2024

AbstractAlthough left ventricular assist devices (LVADs) are an alternative to heart transplantation, their artificial surfaces often lead to serious thrombotic complications requiring high‐risk device replacement. Coating blood‐contacting surfaces with antithrombogenic endothelial cells is considered an effective strategy for preventing thrombus formation. However, this concept has not yet been successfully implemented in LVADs, as severe cell loss is to be expected, especially on the impeller surface with high prothrombogenic supraphysiological shear stress. This study presents a strategy that exploits the magnetic attraction of the impeller on ECs loaded with iron oxide nanoparticles (IONPs) to minimize shear stress‐induced cell detachment from the rotating magnetic impeller while ensuring antithrombogenic EC adhesion, especially as a bridge until they formed their adhesion‐promoting matrix. In contrast to polyvinylpyrrolidone (PVP)‐coated IONPs, more efficient and safer cell loading is achieved with sodium citrate (Cit)‐stabilized IONPs, where incubation with 6.6 µg iron mL‐1 Cit‐IONPs for 24 h resulting in an average internalization of 23 pg iron per cell. Internalization of Cit‐IONP significantly improved cell attraction to the highly magnetic impeller surface without affecting cell viability or antithrombogenic function. This protocol is key for the development of a biohybrid LVAD impeller that can prevent life‐threatening thrombosis and hemorrhage in a future clinical application.
Hole Trap Formation in Quantum Dot Light‐Emitting Diodes Under Electrical Stress
Authors: Huang Jiangxia , Lin Wenxin , Li Shuxin , Li Jiahao , Feng Haonan , Lin Xiongfeng , Guo Yulin , Liang Wenlin , Wu Longjia , Blom Paul W. M. , Niu Quan , Ma Yuguang 
Published: December 2024

AbstractQuantum dot light‐emitting diodes (QLEDs) have emerged as promising candidates for next‐generation display technology, but the limited lifetime of QLEDs hampers their further commercialization. Despite extensive research that has been conducted for the last decades, the mechanism leading to the rapid degradation of QLEDs remains unclear. Here, the formation of hole traps is demonstrated as the critical reason for the degradation of QLEDs. Applying impedance measurements, an enhancement of the negative capacitance is observed and provides straightforward evidence for the formation of hole traps. The generated hole traps introduce additional trap‐assisted recombination of trapped holes with free electrons, as reflected by the evolution and voltage dependence of the electroluminescence spectra, leading to efficiency loss in degraded devices. By performing numerical simulations to model the degradation of QLEDs, the formation of hole traps is quantified as a function of aging time. The calculated hole trap density is consistent with that as measured from impedance spectroscopy, validating that the hole trap formation is the mechanism for the voltage drift and efficiency decrease of QLEDs under constant current stress.
Single‐Atom Platinum Immobilized on Polyimide for Highly Efficient and Durable Hydrogen Evolution Electrocatalysis
Authors: Zhang Shouhan , Wu Zhenzhong , Liu Yunxia , Bai Jing , Ding Yidan , Ma Ziwei , Lin Haiping , Zhang Longsheng , Liu Tianxi 
Published: December 2024

AbstractElectrocatalytic hydrogen evolution reaction (HER) is widely regarded as a promising approach to convert renewable electricity into hydrogen. Platinum (Pt) based catalysts demonstrate superior activity toward acidic HER, but the scarcity of Pt metal presents obstacles for large‐scale application. Therefore, constructing Pt single‐atom catalysts (SACs) with maximum metal‐atom‐utilization efficiency renders a feasible strategy, which however is critically hindered by an unsatisfactory catalyst lifetime. Here, a general strategy is reported to develop novel HER catalysts with Pt single atoms immobilized on polyimide support, which can display an exceptional activity toward acidic HER while achieving an outstandingly high durability with negligible activity decay for 760 h of continuous operation at 100 mA cm−2. The detailed experimental and theoretical results unravel that, the polyimide support lowers the d‐band level of Pt site with a reduced energy barrier for acidic HER and simultaneously promotes the proton concentration near Pt site, leading to appreciably improved HER kinetics. Additionally, the polyimide support is versatile toward immobilizing ruthenium, palladium, and other single metal atoms, providing an alternative approach to develop SACs with superior catalytic activity and durability.
Tailoring Molecular Space to Navigate Phase Complexity in Cs‐Based Quasi‐2D Perovskites via Gated‐Gaussian‐Driven High‐Throughput Discovery
Authors: Um Minsub , Sanchez Sheryl L. , Song Hochan , Lawrie Benjamin J. , Ahn Hyungju , Kalinin Sergei V. , Liu Yongtao , Choi Hyosung , Yang Jonghee , Ahmadi Mahshid 
Published: December 2024

AbstractCesium‐based quasi‐2D halide perovskites (HPs) offer promising functionalities and low‐temperature manufacturability, suited to stable tandem photovoltaics. However, the chemical interplays between the molecular spacers and the inorganic building blocks during crystallization cause substantial phase complexities in the resulting matrices. To successfully optimize and implement the quasi‐2D HP functionalities, a systematic understanding of spacer chemistry, along with the seamless navigation of the inherently discrete molecular space, is necessary. Herein, by utilizing high‐throughput automated experimentation, the phase complexities in the molecular space of quasi‐2D HPs are explored, thus identifying the chemical roles of the spacer cations on the synthesis and functionalities of the complex materials. Furthermore, a novel active machine learning algorithm leveraging a two‐stage decision‐making process, called gated Gaussian process Bayesian optimization is introduced, to navigate the discrete ternary chemical space defined with two distinctive spacer molecules. Through simultaneous optimization of photoluminescence intensity and stability that “tailors” the chemistry in the molecular space, a ternary‐compositional quasi‐2D HP film realizing excellent optoelectronic functionalities is demonstrated. This work not only provides a pathway for the rational and bespoke design of complex HP materials but also sets the stage for accelerated materials discovery in other multifunctional systems.
Acute Kidney Injury Among Florida Construction Workers: A Pilot Study
Authors: Chicas Roxana C. , Zhuang Cathy , Castellano Andrea , Trejo Leslie , Ruiz Ernesto , Hertzberg Vicki 
Published: December 2024

ABSTRACTBackgroundWhile construction workers have the second highest rate of heat‐related mortality, less is known about the prevelance of heat‐related illness (HRI) symptoms, dehydration and kidney dysfunction. The aim of this study was to conduct a biomedical field‐based study with construction workers to characterize HRI symptoms, dehydration, and kidney dysfunction, and analyze relationships between post‐work urine specific gravity (USG) percentiles and predictors such as work hours, water consumption, and sugary beverage consumption.MethodsIn collaboration with the Farmworker Association of Florida, 58 construction workers in Central Florida were monitored pre‐ and post‐work shift on one workday. Research staff used a recreational vehicle to meet workers at their worksites, collect blood and urine pre‐ and post‐work shift, and administer a survey on HRI symptoms. Acute kidney injury (AKI) was measured using serum creatinine and dehydration with USG. Predictors were examined in single covariate linear quantile mixed models against USG percentiles.ResultsThe mean heat index was 88.4°F. Forty‐two percent reported at least one symptom of HRI. Dehydration rates were 75% pre‐work shift and 78% post‐work shift. Severe dehydration increased from 16% to 33%. AKI was observed in 38% of the participants.ConclusionThis is, to our knowledge, the first US field‐based biomedical study to document AKI, dehydration, and HRI symptoms in construction workers. This study adds to the literature that supports occupational heat exposure as a risk factor for AKI and dehydration.