bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamical Mechanism for Reaching Ultrahigh Voltages from a Falling Droplet
Authors: Zhang Hongbo , Tian Bingkun , Jiang Xiaofeng , Li Luxian , Xue Minmin , Guo Wanlin , Zhang Zhuhua 
Published: February 2024

AbstractRecent experiments have demonstrated an extremely high output voltage of 260 V by impinging droplets on an electret surface with top and back electrodes. However, the mechanism underlying the generated high voltage remains elusive. Through high‐speed imaging of the impinging water droplet, it is found that the recorded voltage is proportional to the change rate of contact length l between the droplet and the top electrode over time, that is, dl/dt. By combining an electrostatic model with multi‐physics simulations, the time‐dependent charge distribution on the top electrode is analytically described as a function of several key factors pertaining to the spreading dynamics of droplet and the geometrical dimensions of device. These results show that the high voltage originates from the accumulation of charge in the spreading droplet and the ensuing instantaneous discharge upon high‐speed contact with the top electrode. Using the model‐optimized parameters, the experimentally generated voltage from a falling 64 µL droplet with a 2 mm salt can be boosted to 1030 V, giving rise to an energy conversion efficiency as high as 3.3%. This conversion efficiency will further increase by 14 times if the surface charge density of the electret can be enhanced to its limit using state‐of‐the‐art fabrication techniques.
Biomimetic Guttation Feature in 2D Hydrotalcite Membranes for Self‐Sustaining Water Purification
Authors: Fan Zhi‐Wei , Zhang Jie , Zuo Bo‐Yu , Tian Xiao‐Bao , Wang Zhifeng , Ju Xiao‐Jie , Xie Rui , Wang Wei , Pan Da‐Wei , Liu Zhuang , Chu Liang‐Yin 
Published: February 2024

AbstractSignificant achievements have been made in membrane‐based nanofiltration to combat global micropollutant contamination in aquatic environments, but the current water purification membranes have been constrained by the inherent limitations of substantial operating pressure gradients. Here, a novel solution inspired by natural guttation process observed in plants is presented. This biomimetic guttation feature is realized in the 2D hydrotalcite membranes composed of layered double hydroxides (LDHs), which spontaneously exhibit water seepage, akin to the expulsion of excess liquid from plant leaves in nature. This self‐sustaining water permeation is attributed to the surface force‐pore flow mechanism. Unlike conventional membranes requiring external operating pressure, the guttation flux positively correlates with LDH membrane thickness up to a threshold point. Further demonstration shows the potential of the membrane by achieving over 99% rejection of small molecular weight organic dyes, for addressing micropollutant challenges. Leveraging the guttation feature, steric effects related to the d‐spacing, and the chemical safety of LDH, the finding opens multiple opportunities for self‐sustaining nanofiltration and forward osmosis applications, such as pharmaceuticals (e.g., protein purification) and food processing (e.g., fruit juice or milk concentration) standing to benefit significantly from this innovative technology.
One‐Step Fabrication of New PCPNs with Unique Optical Responses for Ultra‐Stable Anti‐Counterfeiting Labels
Authors: Chen Xiao , Wu Youfusheng , Tian Bin , Zheng Ke , Zhan Haoye , Wu Wei 
Published: February 2024

AbstractConstructing a library of stable phosphors with unconventional fluorescence (FL) and room temperature phosphorescence (RTP) color combination is an effective approach to enhance anti‐counterfeiting strength, but remains a challenge. Herein, a one‐step strategy is proposed to fabricate ultra‐stable CsPbX3/carbon dots (CDs) @NH4AlP2O7 (X = Cl, Br, and I) nanocomposites (PCPNs) with full‐spectrum FL emission and constant short‐wavelength blue RTP emission, breaking the conventional luminescent properties that RTP generally exhibit obvious wavelength red‐shifts compared with FL. The enhanced full‐color (457–612 nm) FL emissions are implemented by adjusting halogen compositions, which is attributed to CsPbX3 as the dominant FL center. Owing to the RTP emission of CDs, constant long‐lived blue RTP emission lasting 12 s is observed from PCPNs. Additionally, the PCPNs exhibit remarkable tolerance to prolonged ultraviolet irradiation and erosion by solutions with various pH and solvents, supported by NH4AlP2O7 inert shell stabilizing the perovskite structure and triplet state. When the anti‐counterfeiting ink based on PCPNs is printed on various substrates, fine anti‐counterfeiting labels with unconventional emission combinations of FL and RTP are formed and show excellent solvent resistance and mechanical stability. This study provides fresh perspectives on the development of anti‐counterfeiting labels with enhanced security strength and long‐term effects.
Activatable Janus Nanoparticles for Precise NIR‐II Bioimaging and Synergistic Cancer Therapy
Authors: Bao Jiasheng , Liu Ruiqi , Yu Zhouyu , Cheng Zhen , Chang Baisong 
Published: February 2024

AbstractDespite multifunctional theranostics hold vast potential in deep tissue bioimaging and tumor therapy, activatable nanomedicine with integration of precise diagnosis and effective treatment is usually achieved at the cost of complicated synthesis chemistries. Here, a facile way to design bioresponsive Ag2S‐Ag Janus probes coated by polyethylene glycol (PEG) (denoted as AAP) is showed, active in the second near‐infrared window (NIR‐II, 1000–1700 nm). In tumor microenvironment, Ag part can yield hydroxyl radicals (·OH) by consuming H2O2 for high‐efficiency chemodynamic therapy (CDT), while Ag2S part has impressive photothermal therapy (PTT). The synergistic benefits from Ag and Ag2S parts further boosted CDT effect of AAP Janus probes with high photothermal conversion efficiency up to 56.8%. Moreover, multiple lines of evidence supported that extremely faint fluorescence of AAP Janus probes can be significantly activated by overexpressed levels of H2O2, showing bright NIR‐II emission at ≈1270 nm with over 5.6 × 103‐fold increase in signal intensity. AAP Janus probes are easily activatable for NIR‐II imaging for tumor‐specific identification, and effectively ablate tumor tissues with tumor inhibition rate of 96.2%. This study expects that AAP Janus probe will open up a new route to achieve precise tumor diagnosis and treatment in the NIR‐II window.
Engineering the Electronic Interaction Between Single Au Atoms and CoN Through Nitrogen‐Coordination Bonding as an Efficient Bifunctional Electrocatalyst for Rechargeable Zn–Air Batteries
Authors: Hu Xiaolin , Chen Xia , Li Xiang , Xu Chaohe 
Published: February 2024

AbstractSingle‐atom catalysts hold significance in the field of electrocatalysis. In this study, cobalt nitride (CoN), known for its semiconductor characteristics, is selected as the substrate, on which single gold (Au) atoms are loaded, to synthesize the catalyst Au SAC CoN@NF with Au single atoms anchored on CoN catalysts and grown on nickel foam. The introduction of single Au atoms results in an exceptional double‐layer capacitance (1425.7 mF cm−2), which offers immense possibilities for the applications of zinc–air batteries based on Au SAC CoN@NF. The zinc–air batteries demonstrated remarkable performance metrics, including a power density of 161.94 mW cm−2, a specific capacity of 813.80 mAh g−1, and a cycling stability of more than 260 h at 10 mA cm−2. In addition, these batteries show an outstanding round‐trip efficiency of 65.1%. Density functional theory calculations reveal that Au SAC CoN@NF can optimize the adsorption energies of intermediates for oxygen evolution reaction and promote single Au atoms in transporting electrons to the OH− species at an Au–N active site for oxygen reduction reaction. The proposed electronic metal‐support interaction strategy offers fresh insights for designing single‐atom catalysts to enhance electrocatalysis efficiency, thereby expanding the practical application prospects of zinc–air batteries.
Ptychographic Nanoscale Imaging of the Magnetoelectric Coupling in Freestanding BiFeO3
Authors: Butcher Tim A. , Phillips Nicholas W. , Chiu Chun‐Chien , Wei Chia‐Chun , Ho Sheng‐Zhu , Chen Yi‐Chun , Fröjdh Erik , Baruffaldi Filippo , Carulla Maria , Zhang Jiaguo , Bergamaschi Anna , Vaz Carlos A. F. , Kleibert Armin , Finizio Simone , Yang Jan‐Chi , Huang Shih‐Wen , Raabe Jörg 
Published: February 2024

AbstractUnderstanding the magnetic and ferroelectric ordering of magnetoelectric multiferroic materials at the nanoscale necessitates a versatile imaging method with high spatial resolution. Here, soft X‐ray ptychography is employed to simultaneously image the ferroelectric and antiferromagnetic domains in an 80 nm thin freestanding film of the room‐temperature multiferroic BiFeO3 (BFO). The antiferromagnetic spin cycloid of period 64 nm is resolved by reconstructing the corresponding resonant elastic X‐ray scattering in real space and visualized together with mosaic‐like ferroelectric domains in a linear dichroic contrast image at the Fe L3 edge. The measurements reveal a near perfect coupling between the antiferromagnetic and ferroelectric ordering by which the propagation direction of the spin cycloid is locked orthogonally to the ferroelectric polarization. In addition, the study evinces both a preference for in‐plane propagation of the spin cycloid and changes of the ferroelectric polarization by 71° between multiferroic domains in the epitaxial strain‐free, freestanding BFO film. The results provide a direct visualization of the strong magnetoelectric coupling in BFO and of its fine multiferroic domain structure, emphasizing the potential of ptychographic imaging for the study of multiferroics and non‐collinear magnetic materials with soft X‐rays.
Bio‐Inspired Dynamically Morphing Microelectronics toward High‐Density Energy Applications and Intelligent Biomedical Implants
Authors: Merces Leandro , Ferro Letícia Mariê Minatogau , Thomas Aleena , Karnaushenko Dmitriy D. , Luo Yumin , Egunov Aleksandr I. , Zhang Wenlan , Bandari Vineeth K. , Lee Yeji , McCaskill John S. , Zhu Minshen , Schmidt Oliver G. , Karnaushenko Daniil 
Published: February 2024

AbstractChoreographing the adaptive shapes of patterned surfaces to exhibit designable mechanical interactions with their environment remains an intricate challenge. Here, a novel category of strain‐engineered dynamic‐shape materials, empowering diverse multi‐dimensional shape modulations that are combined to form fine‐grained adaptive microarchitectures is introduced. Using micro‐origami tessellation technology, heterogeneous materials are provided with strategic creases featuring stimuli‐responsive micro‐hinges that morph precisely upon chemical and electrical cues. Freestanding multifaceted foldable packages, auxetic mesosurfaces, and morphable cages are three of the forms demonstrated herein of these complex 4‐dimensional (4D) metamaterials. These systems are integrated in dual proof‐of‐concept bioelectronic demonstrations: a soft foldable supercapacitor enhancing its power density (≈108 mW cm−2), and a bio‐adaptive device with a dynamic shape that may enable novel smart‐implant technologies. This work demonstrates that intelligent material systems are now ready to support ultra‐flexible 4D microelectronics, which can impart autonomy to devices culminating in the tangible realization of microelectronic morphogenesis.
High‐Fluidity/High‐Strength Dual‐Layer Gel Electrolytes Enable Ultra‐Flexible and Dendrite‐Free Fiber‐Shaped Aqueous Zinc Metal Battery
Authors: Li Chaowei , Wang Wenhui , Luo Jie , Zhuang Wubin , Zhou Jianxian , Liu Shizuo , Lin Lin , Gong Wenbin , Hong Guo , Shao Zhipeng , Du Jimin , Zhang Qichong , Yao Yagang 
Published: February 2024

AbstractFiber‐shaped aqueous zinc‐ion batteries (FAZIBs) with intrinsic safety, highcapacity, and superb omnidirectional flexibility hold promise for wearable energy‐supply devices. However, the interfacial separation of fiber‐shaped electrodes and electrolytes caused by Zinc (Zn) stripping process and severe Zn dendrites occurring at the folded area under bending condition seriously restricts FAZIBs' practical application. Here, an advanced confinement encapsulation strategy is originally reported to construct dual‐layer gel electrolyte consisting of high‐fluidity polyvinyl alcohol‐Zn acetate inner layer and high‐strength Zn alginate outer layer for fiber‐shaped Zn anode. Benefiting from the synergistic effect of inner‐outer gel electrolyte and the formation of solid electrolyte interphase on Zn anode surface by lysine additive, the resulting fiber‐shaped Zn‐Zn symmetric cell delivers long cycling life over 800 h at 1 mA cm−2 with dynamic bending frequency of 0.1 Hz. The finite element simulation further confirms that dual‐layer gel electrolyte can effectively suppress the interfacial separation arising from the Zn stripping and bending process. More importantly, a robust twisted fiber‐shaped Zn/zinc hexacyanoferrate battery based on dual‐layer gel electrolyte is successfully assembled, achieving a remarkable capacity retention of 97.7% after bending 500 cycles. Therefore, such novel dual‐layer gel electrolyte design paves the way for the development of long‐life fiber‐shaped aqueous metal batteries.
On‐Demand Magnetically‐Activated Drug Delivery from Additively Manufactured Porous Bone Implants to Tackle Antibiotic‐Resistant Infections
Authors: Šalandová Monika , Leeflang Marius Alexander , Klimopoulou Maria , Fratila‐Apachitei Lidy Elena , Apachitei Iulian , Zadpoor Amir Abbas 
Published: February 2024

AbstractThis study proposes a new concept for an on‐demand drug releasing device intended for integration into additively manufactured (i.e., 3D printed) orthopedic implants. The system comprises a surface with conduits connected to a subsurface reservoir used for storage and on‐demand release of antimicrobial agents, covered with a cap that prevents the antibacterial agents from being released until alternating magnetic field (AMF) raises the temperature of the cap, thus, releasing the stored drug. To demonstrate this concept, Ti6Al4V specimens are directly 3D printed using selective laser melting and their surface, reservoirs, and drug releasing properties are characterized. A new synthetic antimicrobial peptide, SAAP‐148, is thereafter tested for its cytotoxic, osteogenic, and immunomodulatory effects at concentrations relevant for its minimal bactericidal concentration (MBC) and is compared with its natural analogue, LL‐37. The results showed that AMF successfully activated the release from the 3D printed loaded samples. Both peptides demonstrated to be non‐cytotoxic within the MBC levels for macrophages and preosteoblasts and did not influence their osteoimmunomodulatory behavior. The findings of this study indicate that the proposed concept is technically feasible and has the potential to be used for the development of bone implants with on‐demand delivery systems to fight IAI without systemic or continuous local release of antibiotics.
Colonic Delivery of Aqueous Suspensions Using 3D Printed Capsules
Authors: Green Buzhor Marina , Abdi Fatma , Luo Zhi , Leroux Jean‐Christophe 
Published: February 2024

AbstractThe efficient oral delivery of aqueous suspensions to the distal intestine or the colon is a significant pharmaceutical challenge because few capsules are sufficiently stable to protect aqueous suspensions while enduring the conditions during gastrointestinal (GI) transit. Herein, a design is introduced for enteric capsules intended to transport aqueous media to the distal part of the intestine. These capsules consist of a water‐insoluble body and lid that encapsulate the solution and are held together by an enteric water‐soluble locking cap. The capsules are fabricated using a combination of 3D printing methods enabling design control and precision. Mechanical testing reveals that the capsules are soft, strong, and could withstand forces generally encountered during GI transit. The capsules also exhibit resistance to proton diffusion, which is important for protecting their content from gastric acidity. In vitro dissolution assessments and in vivo imaging studies demonstrate that the capsules release their content in the later stages of the GI tract. This unique design has potential applications in targeted delivery of aqueous suspensions of live bacterial suspensions to the colon, offering a promising platform for therapeutic interventions and research in gut health.
Greatly Enhanced Magnetic and Magneto‐Optical Properties of Bismuth Iron Oxide Sillenite Crystal with Cobalt–Iron Codoping
Authors: Liu Meng‐Li , Wang Cheng , Wu Xuan , Shen Jin‐Ru , Gao Teng , Chen Xin , Hu Xiao‐Lin , Zhuang Nai‐Feng 
Published: February 2024

AbstractThe chiral sillenite Bi25FeO40 exhibits versatile properties including electro‐optics, magneto‐optics, optical rotation, and photorefraction, showing great potential in multi‐functional magneto‐optical devices. However, the weak magnetism of this crystal leads to a poor magneto‐optical property, which is extremely hindering its practical applications. Combining with the sillenite structure, the formation energy and the magnetic‐optical effect are calculated based on density functional theory. The codoping of strongly magnetic Co and Fe ions is predicted to enable high doping concentrations. The hybridization between Bi 6p orbitals and Fe/Co 3d orbitals significantly enhances the optical transition and thus greatly improves the magneto‐optical properties. The millimeter‐sized Bi26‐x‐yCoxFeyO40 crystals are successfully prepared by hydrothermal methods. The characterizations on structure, TG‐DSC, magnetism, and magneto‐optical effect confirm the theoretical predictions that the Co‐Fe codoped crystals maintain the chiral bismuth ferrite structure with multifunctional properties and high thermal stability. The Co‐Fe codoping significantly enhances the magnetism and magneto‐optical properties of Bi25FeO40 crystal. The magnetization of Bi19.0Co3.5Fe3.5O40 increases by 27 times and the magneto‐optical effect of Bi19.8Co3.0Fe3.2O40 at 720, 777, 1288, 1388, and 1790 nm are greater than Bi:YIG and undoped Bi25FeO40. Bi26‐x‐yCoxFeyO40 crystals with enhanced magneto‐optical properties by Co‐Fe codoping are promising for novel multifunctional magneto‐optical devices.
Unraveling The Impact of Isomerism on Enzymatic Polymerization of Furanic Polyesters
Authors: Silvianti Fitrilia , Maniar Dina , Agostinho Beatriz , de Leeuw Tijn C. , Pelras Théophile , Dijkstra Lieke , Woortman Albert J. J. , Dijken Jur van , Thiyagarajan Shanmugam , Sousa Andreia F. , Loos Katja 
Published: February 2024

AbstractAs awareness of the environmental impact of fossil‐based polymers grows, the demand for biobased alternatives rises. In this context, combining eco‐friendly synthesis techniques with renewable resources is important to produce polymers efficiently and sustainably. Furandicarboxylic acid (FDCA) is one of the key building blocks for producing biobased polymers. However, most studies predominantly focus on 2,5‐FDCA, while FDCA encompasses other noteworthy isomers, namely, 2,4‐ and 3,4‐FDCA. The polymers derived from these two isomers have recently gained attention due to their promising properties. In this study, an environmentally friendly approach for producing biobased polyesters from 2,5‐, 2,4‐, and 3,4‐FDCA dimethyl ester isomers is proposed. The synthesis is conducted under greener conditions, utilizing Candida antarctica lipase B (CALB) enzyme as a biocatalyst. The performance of the enzyme is assessed, revealing CALB preference for polymerizing 2,5‐FDCA over 2,4‐ and 3,4‐FDCA dimethyl ester, which is elucidated by docking analysis. Moreover, CALB shows varying rates of cyclic oligomer formation for each isomer, favoring 2,5‐FDCA cyclization. The structure‐property relationship, encompassing the variation in isomeric structure, is evaluated through structural characterization, thermal analysis, and surface properties. This study primarily emphasized enzymatic polymerization and highlighted its versatility in accommodating different monomer isomeric substitutions.
Enabling Fluorine‐Free Lithium‐Ion Capacitors and Lithium‐Ion Batteries for High‐Temperature Applications by the Implementation of Lithium Bis(oxalato)Borate and Ethyl Isopropyl Sulfone as Electrolyte
Authors: Kreth Fabian Alexander , Köps Lukas , Leibing Christian , Darlami Magar Sandesh , Hermesdorf Marius , Schutjajew Konstantin , Neumann Christof , Leistenschneider Desirée , Turchanin Andrey , Oschatz Martin , Gómez Urbano Juan Luis , Balducci Andrea 
Published: February 2024

AbstractA novel fluorine‐free electrolyte comprising a solution of lithium bis(oxalato)borate in ethyl isopropyl sulfone is presented. It is characterized by its safety and non‐toxic properties, along with the capability to effectively suppress the anodic dissolution of aluminum. Successful high‐temperature application of this electrolyte in combination with various capacitor‐ and battery‐like electrode materials is shown. Further utilization in a lithium‐ion capacitor and a lithium‐ion battery is demonstrated. To the best of the knowledge, the lithium‐ion capacitor presented in this work represents the first entirely fluorine‐free device suitable for high‐temperature applications. When operating at 60 °C, this device delivers a maximum energy output of 169 Wh kg−1AM at a power of 200 W kg−1AM and even 80 Wh kg1AM at 10 kW kg‐1AM, along with the ability to retain 80% of its initial capacitance after 3500 cycles at 5 A g−1. As such, this novel electrolyte is a promising alternative to conventional fluorine‐containing configurations since its performance is capable to match or even surpass that of most similar laboratory‐scale LICs.
Dual Redox Mediators Assisted Hierarchically Porous Hollow Carbon Shell Cathode for Enhanced Performance Li‐O2 Battery
Authors: Gou Zhaolin , Yao Ying , Geng Xinjia , Yang Feiyang , Hu Xinrong , Chen Ziyi , Zheng Lijun , Su Yuefeng , Wu Feng , Lu Jun 
Published: February 2024

AbstractRechargeable lithium‐oxygen (Li‐O2) batteries with high theoretical energy density are regarded as a promising candidate for the booming electric vehicle manufacturing industry, whereas their commercial application is hindered due to poor cyclic stability caused by the sluggish kinetics and inevitable cathode passivation. Herein, a synergistic working mechanism of Li‐O2 battery is initiated by implementing well‐designed hollow carbon shells with hierarchically porous hollow structure (HCS) assisted by dual redox mediators (RMs) simultaneously, so as to systemically address issues of diminished discharge capacity and reaction kinetics. The hierarchically porous structure of HCS constructs more space to accommodate Li2O2, increases the accessibility of active sites, and enhances discharge capacity. More importantly, the dual RMs regulate the growth mechanism of Li2O2 in surface‐mediated mode, resulting in an easily decomposed film‐like Li2O2 with higher electron transport capacity and improving the reaction kinetics. As a result of the synergistic effort, an HCS‐based Li‐O2 battery with dual RMs manifests a total discharge capacity of 24580 mA h g−1 and a prolonged cycle life of 2500 h at the current density of 100 mA g−1. This design philosophy will open up a new way to optimize and upgrade the cathode materials of Li‐O2 batteries.