bluuebunny/crossref_metadata_2025_split huggingface dataset:
Infection Micromilieu‐Activated Nanocatalytic Membrane for Orchestrating Rapid Sterilization and Stalled Chronic Wound Regeneration
Authors: Zhou Xiong , Wang Ziyou , Chan Yau Kei , Yang Yingming , Jiao Zheng , Li Limei , Li Jiyao , Liang Kunneng , Deng Yi 
Published: November 2021

AbstractPathogenic infection inevitably provokes chronic inflammation and stalls the normal orchestrated course of wound‐healing cascades. However, current antibacterial therapies focus on the inherent bactericidal functions of biomaterials. To take full advantage of infection microenvironment (IME) peculiarities, an IME‐activated nanocatalytic membrane consisting of electrospun poly (lactic‐co‐glycolic acid) (PLGA) scaffolds, MXene/Ag2S bio‐heterojunctions (MX/AS bio‐HJs), and lactate oxidase (LOx) for chronic cutaneous regeneration is devised and developed. In this “intelligent” system, PLGA membranes gradually degrade to lactate, and LOx consumes lactate to yield abundant hydrogen peroxide (H2O2) in a microenvironment‐responsive manner. In addition, MX/AS bio‐HJs in membranes not only exert benign photothermal effects and generate reactive oxygen species upon NIR light, but also catalyze the produced H2O2 to overwhelming hydroxyl radicals (·OH) through Fenton‐like reactions, which all result in rapid synergistic sterilization. Furthermore, in vivo assays demonstrate that the nanocatalytic membranes reshape the stalled chronic wound into a regenerative wound by massacring bacteria, stopping bleeding, boosting epithelialization/collagen deposition of the wound beds, and promoting angiogenesis. As envisaged, the proposed tactic opens up a promising opportunity for arming membranes with IME‐responsive nanocatalytic activity to remedy bacteria‐invaded stalled full‐thickness wounds.
Bioprinting of Complex Multicellular Organs with Advanced Functionality—Recent Progress and Challenges Ahead
Authors: Bertassoni Luiz E. 
Published: November 2021

AbstractBioprinting has emerged as one of the most promising strategies for fabrication of functional organs in the lab as an alternative to transplant organs. While progress in the field has mostly been restricted to a few miniaturized tissues with minimal biological functionality until a few years ago, recent progress has advanced the concept of building three‐dimensional multicellular organ complexity remarkably. This review discusses a series of milestones that have paved the way for bioprinting of tissue constructs that have advanced levels of biological and architectural functionality. Critical materials, engineering and biological challenges that are key to addressing the desirable function of engineered organs are presented. These are discussed in light of the many difficulties to replicate the heterotypic organization of multicellular solid organs, the nanoscale precision of the extracellular microenvironment in hierarchical tissues, as well as the advantages and limitations of existing bioprinting methods to adequately overcome these barriers. In summary, the advances of the field toward realistic manufacturing of functional organs have never been so extensive, and this manuscript serves as a road map for some of the recent progress and the challenges ahead.
Cr‐Doped Pd Metallene Endows a Practical Formaldehyde Sensor New Limit and High Selectivity
Authors: Zhang Jingxian , Lv Fan , Li Zehui , Jiang Guangya , Tan Meijuan , Yuan Menglei , Zhang Qinghua , Cao Youpeng , Zheng Haoyun , Zhang Lingling , Tang Cheng , Fu Wangyang , Liu Can , Liu Kaihui , Gu Lin , Jiang Jingkun , Zhang Guangjin , Guo Shaojun 
Published: November 2021

AbstractElectrochemical sensors for detecting micromolecule organics are desirable for improving the perception of environmental quality and human health. However, currently, the electrochemical sensors for formaldehyde are substantially limited on the market due to the long‐term unsolved problems of the low electrooxidation efficiency and CO poisoning issue of commercial Pd catalysts. Here, a 2D Cr‐doped Pd metallene (Cr‐Pdene) with few atomic layers is shown as an advanced catalyst for ultrasensitive and selective sensing of formaldehyde via a highly efficient formaldehyde electrooxidation. It is found that the doping of Cr into Pd metallene can efficiently optimize the electronic structure of Pd and weaken the interaction between Pd and CO, providing an anti‐poisoning means to favor CO2 production and suppress CO adsorption. The Cr‐Pdene‐based electrochemical sensor exhibits one order of magnitude higher detection range and, especially, much higher anti‐interference for formaldehyde than that of the conventional sensors. Most importantly, it is demonstrated that the Cr‐Pdene can be integrated into commercializable wireless sensor networks or handheld instruments for promising applications relating to the environment, health, and food.
Multifunctional Separator Allows Stable Cycling of Potassium Metal Anodes and of Potassium Metal Batteries
Authors: Liu Pengcheng , Hao Hongchang , Celio Hugo , Cui Jinlei , Ren Muqing , Wang Yixian , Dong Hui , Chowdhury Aminur Rashid , Hutter Tanya , Perras Frédéric A. , Nanda Jagjit , Watt John , Mitlin David 
Published: November 2021

AbstractThis is the first report of a multifunctional separator for potassium‐metal batteries (KMBs). Double‐coated tape‐cast microscale AlF3 on polypropylene (AlF3@PP) yields state‐of‐the‐art electrochemical performance: symmetric cells are stable after 1000 cycles (2000 h) at 0.5 mA cm−2 and 0.5 mAh cm−2, with 0.042 V overpotential. Stability is maintained at 5.0 mA cm−2 for 600 cycles (240 h), with 0.138 V overpotential. Postcycled plated surface is dendrite‐free, while stripped surface contains smooth solid electrolyte interphase (SEI). Conventional PP cells fail rapidly, with dendrites at plating, and “dead metal” and SEI clumps at stripping. Potassium hexacyanoferrate(III) cathode KMBs with AlF3@PP display enhanced capacity retention (91% at 100 cycles vs 58%). AlF3 partially reacts with K to form an artificial SEI containing KF, AlF3, and Al2O3 phases. The AlF3@PP promotes complete electrolyte wetting and enhances uptake, improves ion conductivity, and increases ion transference number. The higher of K+ transference number is ascribed to the strong interaction between AlF3 and FSI− anions, as revealed through 19F NMR. The enhancement in wetting and performance is general, being demonstrated with ester‐ and ether‐based solvents, with K‐, Na‐, or Li‐ salts, and with different commercial separators. In full batteries, AlF3 prevents Fe crossover and cycling‐induced cathode pulverization.
Graphitic Aza‐Fused π‐Conjugated Networks: Construction, Engineering, and Task‐Specific Applications
Authors: Chen Hao , Suo Xian , Yang Zhenzhen , Dai Sheng 
Published: November 2021

Abstract2D π‐conjugated networks linked by aza‐fused units represent a pivotal category of graphitic materials with stacked nanosheet architectures. Extensive efforts have been directed at their fabrication and application since the discovery of covalent triazine frameworks (CTFs). Besides the triazine cores, tricycloquinazoline and hexaazatriphenylene linkages are further introduced to tailor the structures and properties. Diverse related materials have been developed rapidly, and a thorough outlook is necessitated to unveil the structure–property–application relationships across multiple subcategories, which is pivotal to guide the design and fabrication toward enhanced task‐specific performance. Herein, the structure types and development of related materials including CTFs, covalent quinazoline networks, and hexaazatriphenylene networks, are introduced. Advanced synthetic strategies coupled with characterization techniques provide powerful tools to engineer the properties and tune the associated behaviors in corresponding applications. Case studies in the areas of gas adsorption, membrane‐based separation, thermo‐/electro‐/photocatalysis, and energy storage are then addressed, focusing on the correlation between structure/property engineering and optimization of the corresponding performance, particularly the preferred features and strategies in each specific field. In the last section, the underlying challenges and opportunities in construction and application of this emerging and promising material category are discussed.
Spatial Control of Condensation: The Past, the Present, and the Future
Authors: Mandsberg Nikolaj Kofoed 
Published: November 2021

AbstractSpatial control of condensation/nucleation is important for applications such as capillary force‐driven parallelized device alignment, suppression of chain‐reaction ice‐formation, and energy generation in steam cycles or dew collection to mitigate water scarcity. However, the nucleation is inherently random, limiting the possibilities to achieve defect‐free and durable spatial control. The two well‐known strategies for spatial control are chemical and topographical patterning, which can both promote nucleation in predetermined regions by spatially shifting the probability distribution for nucleation. Historical developments of the field and studies that focus on or utilize spatial control of condensation are presented herein. The studies are divided according to the strategy and length scale of surface patterning, from nanometer to millimeter. In addition to the two well‐known strategies, supersaturation is identified as a third strategy. Their advantages are discussed together with future directions of spatial control with a focus on stimuli‐responsive spatial control and the importance of transitioning to control of liquids other than water.
Deployment Opportunities for Space Photovoltaics and the Prospects for Perovskite Solar Cells
Authors: Ho‐Baillie Anita W. Y. , Sullivan Hamish G. J. , Bannerman Thomas A. , Talathi Harsh. P. , Bing Jueming , Tang Shi , Xu Alan , Bhattacharyya Dhriti , Cairns Iver H. , McKenzie David. R. 
Published: November 2021

AbstractThe rapid progress in space exploration, mining, and tourism has been fuelled by both public and private sector investments. The latter has led to the need to reduce manufacturing and launch cost of space hardware to create a competitive and sustainable space economy. A major step in making space accessible is to develop affordable power systems for “commercial space” use. Photovoltaics has in the past and will in the future be a key component. Metal halide perovskite solar cells show the greatest potential of all emerging technologies for low‐cost space photovoltaics. They have demonstrated the highest rate of power conversion efficiency improvement. Compared to the triple junction III–V compound semiconductor cells commonly used for space applications, perovskite cells have a higher power to weight ratio and are significantly cheaper to be manufactured. They have high radiation tolerance and can be fabricated onto flexible substrates for expand‐on‐demand solar panels. This paper outlines the major space markets for photovoltaics, and research and development opportunities for perovskite space solar cells in the context of their recent progress.
Air‐Pressure‐Assisted Pen‐Nib Printing for 3D Printed Electronics
Authors: Ahn Jinhyuck , Sim Ho Hyung , Kim Je Hyeong , Wajahat Muhammad , Kim Jung Hyun , Bae Jongcheon , Kim Seonghyeon , Pyo Jaeyeon , Jeon Chang Jun , Kim Bum Seok , Baek Sung Hyun , Seol Seung Kwon 
Published: November 2021

Abstract3D printed electronics employing direct‐ink‐writing methods are promising alternative manufacturing technologies for realizing structural electronics. The emerging demand for accessible, cost‐effective, and rapid writing calls for novel approaches to print functional components onto nonflat and 3D architectures. This study presents a novel air‐pressure‐assisted pen‐nib printing approach producing electrical and functional components with various material inks on flat and 3D surfaces. Based on the inks’ rheological properties, the ejected ink's quantity through the nib is manipulated via air pressure; thus, the printed line width is controlled. This strategy also achieves the viscosity range extension of printable inks by enabling printing inks that cannot be used in general pen‐based printing. Three functional inks with different rheological properties—Ag catalyst ink for Cu electroless deposition, Ag‐PEDOT:PSS ink, and thermochromic pigment inks are designed. Several electrical and functional components, such as highly conductive Cu interconnects, Cu spiral coils for wireless power transfer receivers, flexible heaters, and matrix data codes based on temperature‐responsive color transitions are demonstrated. Furthermore, parallel printing with a multi‐nib print‐head is demonstrated for improving the printing speed and manufacturing scalability. The authors believe that this novel approach is promising as a manufacturing technique for realizing 3D printed electronics.
Constructing Mechanochemical Durable Superhydrophobic Composite Coating towards Superior Anticorrosion
Authors: Song Shijie , Yan Han , Cai Meng , Huang Yu , Fan Xiaoqiang , Zhu Minhao 
Published: November 2021

AbstractCorrosion is an inevitable and thorny issue in various fields, resulting in materials degradation, environmental pollution, economic loss, and even emergency safety accidents. Owing to the special surface functions, superhydrophobic coatings are regarded as a promising strategy towards corrosion inhibition. However, the large‐scale and real‐world applications of superhydrophobic coatings are restricted by the mechanical and chemical weaknesses. Herein, a fluorine‐free dual‐layer microarc oxidation/superhydrophobic coating with mechanochemical stabilization is fabricated for corrosion protection. The dual‐layer coating maintains superhydrophobicity under ultraviolet irradiation (15 d), different pH values (1–14), different temperatures (0–100 °C) and abrasion test (180 cycles). Its impedance modulus at the lowest frequency is increased by more than six orders of magnitude than that of the pristine substrate, and the corrosion inhibition efficiency value is calculated as 99.999%. The enhancement of surface multifunctions is attributed to the synergistic effects of microarc oxidation layer and superhydrophobic layer. The as‐prepared robust dual‐layer coating with excellent properties is expected to have potential applications in material protection fields.
Trade‐off Lattice Site Occupancy Engineering Strategy for Near‐Infrared Phosphors with Ultrabroad and Tunable Emission
Authors: Lang Tianchun , Cai Mingsheng , Fang Shuangqiang , Han Tao , He Shuangshuang , Wang Qunyi , Ge Guanghui , Wang Jun , Guo Chaozhong , Peng Lingling , Cao Shixiu , Liu Bitao , Korepanov Vladimir I. , Yakovlev Alexey N. , Qiu Jianbei 
Published: November 2021

AbstractBroadband near‐infrared (NIR) luminescent materials have received notable attention due to their distinct photophysical properties for designing NIR light‐emitting diodes (NIR LEDs). Here, a series of Ca3−xLuxGa2+xGe3−xO12:Cr3+ (CLGGG:Cr3+) (x = 0–1) NIR‐emitting garnet phosphors with an emission range of 660–1200 nm are successfully developed and their lattice parameters are structurally analyzed. Upon 460 nm blue light excitation, the NIR phosphors exhibit both a substantial spectral broadening (FWHM: 129→267 nm) and a redshift of 37 nm (766→803 nm) with cosubstitution of [Lu3+–Ga3+] pairs for [Ca2+–Ge4+] sites. Furthermore, their luminescence thermal stability is substantially improved, maintaining ≈90% of the original photoluminescence intensity at 150 °C, owing to shrinkage of the second coordination sphere and rigid lattice, which are strongly associated with Cr3+ trade‐off occupancy and local structure evolutions. The relation between the trade‐off site occupation of Cr3+ in GaO6/CaO8 polyhedrons and the NIR emission is also clarified by evaluating the decay and electron paramagnetic resonance behavior of Cr3+ at different sites. The broadband NIR phosphors investigated here can serve as auspicious luminescent converters for phosphor‐converted NIR LEDs and can provide an inspiring platform for future studies.
Transketolase Catalyzed Synthesis of N‐Aryl Hydroxamic Acids
Authors: Fúster Fernández Inés , Hecquet Laurence , Fessner Wolf‐Dieter 
Published: November 2021

AbstractHydroxamic acids are metal‐chelating compounds that show important biological activity including anti‐tumor effects. We have recently engineered the transketolase from Geobacillus stearothermopilus (TKgst) to convert benzaldehyde as a non‐natural acceptor substrate. Realizing the structural and electronic similarity to nitrosobenzene, we studied the TK‐catalyzed conversion of nitrosoarenes to yield N‐arylated hydroxamic acids. Here we demonstrate that wild‐type and variants of this versatile TKgst enzyme indeed induce the rapid biocatalytic conversion of variously p‐, m‐ and o‐substituted nitrosoarenes to produce a variety of corresponding N‐aryl hydroxamic acids via creation of a carbon‐nitrogen instead of a carbon‐carbon bond. Further structural modifications can be introduced by varying the donor component, such as hydroxypyruvate or pyruvate.magnified image
Parameter Estimation of Fuel Cell Using Chaotic Mayflies Optimization Algorithm
Authors: Gupta Jyoti , Nijhawan Parag , Ganguli Souvik 
Published: November 2021

AbstractProton exchange membrane fuel cells (PEMFCs) have been known to be a feasible method for sustainable power generation to meet the ever‐increasing electricity demand with no greenhouse gases emission. Thus, under varying operating circumstances, the PEMFCs have gained considerable importance as an alternative energy source. The optimal operation of PEMFC needs to be ensured to exploit its advantages to the maximum limit. In this direction, there is an extensive need for parameter extraction of PEMFC. Many researchers have applied evolutionary optimization approaches to estimate the PEMFCs parameters as the precise modeling of these cells are not possible. To optimize unknown parameters of PEMFCs, a metaheuristic algorithm is proposed, that is, chaotic mayfly algorithm (CMA) is being proposed in this manuscript. The model's statistical effects are more aligned with the actual experimental findings, according to an experimental finding. The results so obtained suggest that CMA variants are a valuable and efficient method of estimating the parameters of PEMFCs models. Even the nonparametric tests like the Friedman ranking test, Wilcoxon's rank‐sum test, and Mood's median test suggest that the proposed algorithm shows better accuracy of the extracted parameters as compared to the other algorithms namely considered in this work.
Engineered Small Extracellular Vesicles as a FGL1/PD‐L1 Dual‐Targeting Delivery System for Alleviating Immune Rejection
Authors: Tsai Hsiang‐i , Wu Yingyi , Liu Xiaoyan , Xu Zhanxue , Liu Longshan , Wang Changxi , Zhang Huanxi , Huang Yisheng , Wang Linglu , Zhang Weixian , Su Dandan , Khan Fahim Ullah , Zhu Xiaofeng , Yang Rongya , Pang Yuxin , Eriksson John E. , Zhu Haitao , Wang Dongqing , Jia Bo , Cheng Fang , Chen Hongbo 
Published: November 2021

AbstractThere is an urgent need for developing new immunosuppressive agents due to the toxicity of long‐term use of broad immunosuppressive agents after organ transplantation. Comprehensive sample analysis revealed dysregulation of FGL1/LAG‐3 and PD‐L1/PD‐1 immune checkpoints in allogeneic heart transplantation mice and clinical kidney transplant patients. In order to enhance these two immunosuppressive signal axes, a bioengineering strategy is developed to simultaneously display FGL1/PD‐L1 (FP) on the surface of small extracellular vesicles (sEVs). Among various cell sources, FP sEVs derived from mesenchymal stem cells (MSCs) not only enriches FGL1/PD‐L1 expression but also maintain the immunomodulatory properties of unmodified MSC sEVs. Next, it is confirmed that FGL1 and PD‐L1 on sEVs are specifically bound to their receptors, LAG‐3 and PD‐1 on target cells. Importantly, FP sEVs significantly inhibite T cell activation and proliferation in vitro and a heart allograft model. Furthermore, FP sEVs encapsulated with low‐dose FK506 (FP sEVs@FK506) exert stronger effects on inhibiting T cell proliferation, reducing CD8+ T cell density and cytokine production in the spleens and heart grafts, inducing regulatory T cells in lymph nodes, and extending graft survival. Taken together, dual‐targeting sEVs have the potential to boost the immune inhibitory signalings in synergy and slow down transplant rejection.
A novel method for measuring and evaluating spatial distribution of straw incorporated by rotary tillage
Authors: Xu Gaoming , Xie Yixuan , Alele Joseph, Odero , Chen Xinxin , Matin Md. A. , Abbas Adnan , He Ruiyin , Ding Qishuo 
Published: November 2021

AbstractStraw incorporation after tillage plays an essential role in soil organic matter and fertility. Despite the importance of understanding the effect of tillage on straw distribution in the soil, an accurate method to measure and evaluate the spatial distribution of straw has not been developed. In this work, we proposed a method for quantifying straw distribution in soil following tillage. The approach uses a straw spatial coordinate digitizer, Pro/Engineer drawing software, and MATLAB visualization software. Straw of four different lengths was mixed into soil by a rotary tillage. Results indicated that the uniformity of straw spatial distribution decreased with the increase of straw length. T50 (50‐mm straw length) had the greatest uniformity. As a result, it is recommended that straw be cut to 50 mm or shorter. This work offers a new insight into the quantitative analysis of straw spatial distribution in soil.
Synthesis of Benzazepinoindole Derivatives via a One‐Pot Process of TiCl4‐Catalyzed Indole Alkylation/Pictet‐Spengler Cyclization
Authors: Bang Eun Ji , Ra Jongmin , Choi Hoe Young , Ko Haye Min 
Published: November 2021

AbstractAn efficient synthetic approach involving indole alkylation/Pictet‐Spengler cyclization was developed to form benzazepinoindole derivatives. The reactions proceeded smoothly with indoles, 2‐aminobenzyl alcohols, and aldehydes in the presence of TiCl4 as a Lewis acid catalyst. The developed one‐pot protocol is operationally simple and tolerates various functional groups. Furthermore, this mild and practical tandem reaction provides a direct route to access benzazepinoindole‐containing natural products and bioactive compounds.
High‐Power Multimode Random Fiber Laser for Speckle‐Free Imaging
Authors: Wang Shanshan , Zhang Weili , Yang Ning , Ma Rui , Zhang Yanli , Wang Zhao , Zhang Jinchuan , Rao Yunjiang 
Published: November 2021

AbstractNew light sources with low spatial coherence and high brightness are crucial for high‐quality imaging. In this paper, such a light source is reported, which is formed by combining random lasing used as seed light with a multimode fiber (MMF) mediated master oscillator power amplifier (MOPA) for power scaling and spatial decoherence. Experimental results show that the proposed multimode random fiber laser (MM‐RFL), with low noise, high spectral density, and high power efficiency, can achieve a maximum output power of 100.6 W and speckle contrast of as low as 0.037. Furthermore, MM‐RFL‐based speckle‐free imaging is demonstrated. The imaging quality can be improved by increasing the output power of the MM‐RFL as its spatial coherence decreases with an increasing number of effective modes excited in the MMF. Such a MM‐RFL provides a powerful light source for speckle‐free imaging applications where high power and low spatial coherence are essential for high‐quality imaging.