bluuebunny/crossref_metadata_2025_split huggingface dataset:
A “Janus” Zwitterionic Hydrogel Patch for Tissue Repair and Prevention of Post‐Operative Adhesions
Authors: Zhang Jing , Luo Xinxin , Liu Jiaqi , Wu Minmin , Feng Jie , Zhou Jia 
Published: December 2024

AbstractAnti‐peritoneal adhesions (PA) are very important after abdominal surgery for that PA often leads to other medical problems and imposes a huge financial burden on the national healthcare system. In this work, a “Janus” zwitterionic hydrogel patch where one side can adhere firmly to the tissue, while the other side has anti‐fouling properties and has little interaction with the surrounding tissue has been developed. The “Janus” hydrogel patch is prepared by in situ formation of a bonding polymer layer poly(acrylic‐co‐N‐hydroxysuccinimide acrylate) on one side of zwitterionic hydrogel. The mechanical, swelling, adhesion, biodegradability and biocompatibility tests are performed to study the function of “Janus” hydrogel patch to prevent wound adhesion and rapid repair. It is found that the adhesive side of the hydrogel patch has stable adhesion to tissues, avoiding the slippage faced by many commercial anti‐adhesion gels in the body. The other zwitterionic side can resist proteins and fibroblasts and prevent external interactions or adhesion with other tissues. This convenient and effective method provides a new idea for the design of postoperative anti‐adhesion materials and broadens the application of hydrogels in the biomedical field.
Extended Short‐Wave Infrared Colloidal Quantum Dot Lasers with Nanosecond Excitation
Authors: Whitworth Guy L. , Roda Carmelita , Dalmases Mariona , Taghipour Nima , Dosil Miguel , Nikolaidou Katerina , Dehghanpour Hamed , Konstantatos Gerasimos 
Published: December 2024

AbstractSolution‐processed gain media have great technological potential as lasers due to their ease of integration with on‐chip photonics, scalability and tuneable optoelectronic properties. Currently, the spectral coverage of solution‐processed lasers extends from visible up to telecom wavelengths in the short‐wave infrared (SWIR) (<1650 nm). Here, the optical gain in the extended SWIR from 1600 nm to 2500 nm is demonstrated, using PbSbased colloidal quantum dots (CQDs). This spectral region has many applications such as in LIDAR, biological imaging and environmental monitoring and is currently served by exotic, costly materials with limitedscalability. Using the CQDs in distributed feedback laser cavities, lasing with emission tuned between 2150 nm and 2500 nm is reported. We show that due to the increased absorption cross‐section of larger CQDs, the optical gain threshold is reduced by a factor of 36 compared to smaller‐sized CQDs, reaching an amplified spontaneous emission (ASE) threshold down to 42 µJ cm−2. Furthermore, gain and lasing under nanosecond excitation are demonstrated for the first time from PbS CQDs and use transient absorption spectroscopy data to model nanosecond gain thresholds. This paves the way for realizing compact and practical CQD infrared lasers and potentially toward electrically driven laser diodes.
A Complex Concentrated Alloy with Record‐High Strength‐Toughness at 77 K
Authors: Sohail Yasir , Zhang Chongle , Gao Shaohua , Zhang Jinyu , Song Wenli , Li Xuanzhe , Wang Bo , Li Suzhi , Xue Dezhen , Liu Gang , Maawad Emad , Gan Weimin , Ma Evan , Sun Jun 
Published: December 2024

AbstractHigh strength and large ductility, leading to a high material toughness (area under the stress‐strain curve), are desirable for alloys used in cryogenic applications. Assisted by domain‐knowledge‐informed machine learning, here a complex concentrated Fe35Co29Ni24Al10Ta2 alloy is designed, which uses L12 coherent nanoprecipitates in a high volume fraction (≈65 ± 3 vol.%) in a face‐centered‐cubic (FCC) solid solution matrix that undergoes FCC‐to‐body‐centered‐cubic (BCC) phase transformation upon tensile straining. Unlike FCC‐to‐BCT phase transformation involving brittle carbon‐enriched martensite, the BCC martensite in this alloy does not cause brittleness at 77 K. The Fe35Co29Ni24Al10Ta2 multi‐principal element alloy achieves a high yield strength ≈1.4 GPa, a high work hardening rate >4 GPa, an ultimate tensile strength ≈2.25 GPa, and a large uniform elongation ≈45%, leading to record‐high material toughness compared with previous cryogenic alloys such as 316L series stainless steels and recent high‐entropy alloys. The nanoprecipitates with nanoscale spacing (≈7.5 nm), apart from serving as dislocation obstacles for strengthening and dislocation sources for sustainable ductility, also undergo deformation twinning. Taken together, these mechanisms are found to be highly effective in strengthening and strain hardening upon tensile straining at liquid nitrogen temperature. These findings demonstrate how to effectively integrate strengthening mechanisms to synergize superior mechanical properties in special‐purpose alloys.
Probiotics Bi‐Enzymatic Cascade Repair System for Editing the Inflammatory Microenvironment to Boost Probiotic Therapy in Inflammatory Bowel Disease
Authors: Yu Jifeng , Li Shaoyue , Xiong Bing , Shen Yuting , Guan Xin , Zhu Yuli , Fang Yan , Zhang Shen , Ding Shisi , Liu Chang , Yue Wenwen , Yin Haohao , Xu Huixiong 
Published: December 2024

AbstractInflammatory bowel disease presents significant treatment challenges owing to its complex pathology. Although probiotics have shown promise as a therapeutic option, their effectiveness is often limited by low concentrations at sites of inflammation, exacerbated by excessive reactive oxygen species and inflammatory triggers. To address this, an innovative cascade repair system is developed to enhance probiotic therapeutic impact by modulating the intestinal microenvironment. This system uses iMXene's catalytic properties to neutralize reactive oxygen species in the gut and its capacity to deliver the CRISPR/dCas9 gene editing system to activate the NLR family pyrin domain containing 12 genes, helping suppress inflammation. By promoting the colonization of Lactobacillus rhamnosus, the system inhibits inflammation pathways and supports the restoration of a balanced intestinal flora through a cascade repair mechanism. These findings demonstrate significant therapeutic benefits in experimental models, with improvements in the overall well‐being of treated mice and effective repair of intestinal inflammation damage. This pioneering approach holds promise for inflammatory bowel disease treatment and opens new avenues for managing other inflammatory conditions, offering valuable insights and guidance for future research into inflammatory diseases.
Sign‐Switchable Poisson's Ratio Design for Bimodal Strain‐to‐Electrical Signal Transducing Device
Authors: Jing Houchao , Dan Junyan , Wei Hua , Guo Tongkun , Xu Zhijun , Jiang Ying , Liu Yaqing 
Published: December 2024

AbstractStretchable electronic devices that conduct strain‐related electronic performances have drawn extensive attention, functioning as mechanical sensors, actuators, and stretchable conductors. Although strain‐insensitive or strain‐responsive nature is well‐achieved separately, it remains challenging to combine these two characteristics in one single device, which will offer versatile adaptability in various working situations. Herein, a hybrid material with sign‐switchable Poisson's ratio (SSPR) is developed by combining a phase‐change gel based reentrantreentrant honeycomb pattern and a polydimethylsiloxane film. The phase‐change gel featuring thermally‐regulated Young's modulus enables the hybrid material to switch between negative and positive Poisson's ratios. After integrating with a pre‐stretched silver nanowires film, the obtained stretchable device performs bimodal strain‐to‐electrical signal transducing (Bi‐SET) functions, in which the SSPR‐dominated strain‐resistance response switches between strain‐dependent and strain‐insensitive behaviors. As a proof of concept, a mode‐switchable grasping system is constructed using a Bi‐SET device‐based controller, enabling the adaptation of grasping behaviors to various target objects.
Preparing Smaller InP Quantum Dots by Suppressing Over‐Etch Using Core Protective Layer and Ammonium Fluoride as Alternative Etchant
Authors: Chen Hsueh‐Shih , Yeh Chang‐Wei , Lee Hsuan‐Yu , Ho Yi‐Jui 
Published: December 2024

AbstractIndium phosphide (InP) is emerging as a viable and environmentally friendly alternative to toxic cadmium‐based quantum dots (QDs), especially in the fields of lighting and display. This is owing to similar material properties of InP to those of commercial Cd‐based QDs. Nonetheless, the surface quality of InP needs enhancement through a post‐treatment process to eliminate surface oxides, typically with hydrofluoric acid (HF). The challenge arises with smaller, such as green InP QDs, as HF easily over‐etch the InP cores, thus leading to an unpredictable size distribution and reduced production consistency. This research introduces a refined synthetic strategy that circumvents this over‐etching phenomenon and offers a more precise control over the etching process of smaller InP QDs. By applying an additional protective layer to the InP cores prior to etching and employing ammonium fluoride (NH4F) as an alternative to the conventional HF, the over‐etching incidence can be markedly mitigated. The results reveal that smaller InP/ZnSeS QDs with photoluminescence quantum yield (QY) >90% can be consistently produced, thereby proposing a more efficient and safer method for the fabrication of smaller InP QDs.
Trap‐Engineering the Persistent Luminescence of Ca3Ga4O9:Tb3+ via Al3+ Substitution for Optical Data Storage
Authors: Abeywickrama Thulitha M. , Guo Angela , Mao Yuanbing 
Published: December 2024

AbstractOptically stimulated luminescence (OSL) materials hold great potential for optical data storage (ODS) and anticounterfeiting applications. Nevertheless, the scarcity of suitable luminescent materials with deep‐level traps remains a significant obstacle. Herein, a host substation strategy have been employed to tune the persistent luminescence (PersL) and OSL properties of Ca3Ga4O9:Tb3+ by Al3+ substitution through trap engineering and demonstrated their potential. Specifically, the photoluminescence of the Ca2.985(Ga1‐y%Aly%)4O9:0.5%Tb3+ of Tb3+ is first investigated due to its different occupancies of Ca2+. The influence of host substitution on the crystal structure, trap depth, trap density, PersL, and OSL properties have further investigated. A series of strong PersL and OSL peaks from the Ca2.985(Ga1‐y%Aly%)4O9:0.5%Tb3+ with bluish‐green emissions have been observed. The Ca2.985(Ga1‐y%Aly%)4O9:0.5%Tb3+ have shown controllable photon release upon thermal and optical stimuli, enhancing their performance for ODS. Thermally stimulated luminescence suggests that vacancy and defect concentrations inside the Ca3‐x%(Ga1‐y%Aly%)4O9:x%Tb3+ can be manipulated by Tb3+ doping and Al3+ substitution, which ultimately leads to the formation of deep traps and a broad distribution of traps with increased deep trap concentration. The work demonstrates that trap engineering through Al3⁺ substitution is an effective method for tuning PersL and OSL properties of Ca2.985(Ga1‐y%Aly%)4O9:0.5%Tb3+ for ODS.
Photoconduction in 2D Single‐Crystal Hybrid Perovskites
Authors: Demontis Valeria , Durante Ofelia , Marongiu Daniela , De Stefano Sebastiano , Matta Selene , Simbula Angelica , Ragazzo Capello Carlotta , Pennelli Giovanni , Quochi Francesco , Saba Michele , Di Bartolomeo Antonio , Mura Andrea , Bongiovanni Giovanni 
Published: December 2024

AbstractSingle‐crystal hybrid perovskites represent an emerging class of next‐generation semiconductors due to their excellent and tunable optoelectronic properties, along with a solution‐based, low‐temperature growth process. 2D single‐crystal hybrid perovskites are especially promising as their long‐range ordered multiple quantum well structure induces many peculiar properties, such as large exciton binding energy, large in‐plane conductivity, and improved environmental stability, which make them suitable for low‐dimensional optoelectronics applications and fundamental studies. Herein, the structural properties, morphology, and optoelectronic behavior of 2D thin film phenethylammonium lead iodide (PEA2PbI4) single‐crystals, synthesized using the space‐confined growth technique are explored. A planar device is fabricated and its spectral photoresponse is studied under broadband supercontinuum white light. Remarkably, the device exhibits an ultra‐low dark current (10−14 A), indicative of low defect density and suppressed ion migration. Under white light, the current increases linearly with the incident power, up to a factor of 105, and the device achieves a specific detectivity of 109 Jones. The temperature and wavelength dependence of the photocurrent suggests the dissociation of excitons as one of the main mechanisms affecting photoconduction. Furthermore, stability under air exposure and illumination turns out to be remarkable.
Viral Live‐Attenuated Vaccines (LAVs): Past and Future Directions
Authors: Tang Yan‐Dong , Li Yuming , Cai Xue‐Hui , Yin Xin 
Published: December 2024

AbstractViral infections continue to pose a significant threat to the health of both humans and animals. Currently, live attenuated vaccines (LAVs) remain the most efficacious and widely utilized tool for combating viral infections. Conventional LAVs involve the adaptation of virulent viruses to novel hosts, cell cultures, or suboptimal environments, resulting in a reduction in pathogenicity while retaining immunogenicity. This process entails directed evolution of the virus to enhance its replication efficiency under these modified conditions. In this review, the development of traditional animal‐adapted and cold‐adapted LAVs is specially discussed. Additionally, the factors that contribute to virus attenuation from a viral lifecycle perspective are summarized. Finally, we propose future directions for next‐generation LAVs.
Upcycling of Polyethylene Wastes to Valuable Chemicals over Group VIII Metal‐decorated WO3 Nanosheets
Authors: Zhou Qimin , Gao Weiqiang , Wang Deliang , Chang Yinlong , Guan Hanxi , Lim Khak Ho , Yang Xuan , Liu Pingwei , Wang Wen‐Jun , Li Bo‐Geng , Wang Qingyue 
Published: December 2024

AbstractCatalytic cracking of polyolefin wastes into valuable chemicals at mild conditions using non‐noble metal catalysts is highly attractive yet challenging. Herein it is reported that 2D tungsten trioxide (2D WO3) nanosheets, after decorating with group VIII metal promoters (i.e., Fe, Co, or Ni), convert high‐density polyethylene (HDPE) into alkylaromatics and olefins at low temperature and ambient pressure without using any solvent or hydrogen: 2D Ni/WO3 with abundant Brønsted acidic sites initiates HDPE cracking at a low temperature of 240 °C; 2D Fe/WO3 with low energy barrier of cyclization achieves a high HDPE conversion to 84.2% liquid hydrocarbons with a selectivity of 30.9% to aromatics at 300 °C. In‐situ spectroscopic investigations and supplementary theoretical calculations illustrate that these aromatics are formed through the cyclization of alkene intermediates. These 2D catalysts also display high efficiency in the low‐temperature cracking of single‐use commercial polyethylene wastes such as packaging bags and bottles. This work has demonstrated the high potential of 2D non‐noble metal catalysts in the efficient upcycling of waste polyolefin at mild conditions.
Understanding the Dynamics of Sulfur Droplets Formation in Lean‐Electrolyte and Low‐Temperature Lithium–Sulfur Batteries
Authors: Qi Qi , Shi Fangyi , Yu Jingya , Ma Yiyuan , Chen Feiyang , Lv Wei , Law Wing‐Cheung , Lau Shu Ping , Xu Zheng‐Long 
Published: December 2024

AbstractLithium–sulfur batteries (LSBs) afford great promises as the next‐generation rechargeable batteries due to the high energy density and low cost of sulfur cathodes. Lean‐electrolyte condition constitutes the prerequisite for high‐energy LSBs, but the insulating sulfur particles hinder capacity utilization, especially at low temperatures. Here, the electrochemical generation of liquid sulfur droplets in the LSB system are studied and elucidate the polysulfide oxidation reaction (SOR) kinetics under different electrolyte/sulfur (E/S) ratios and low‐temperature conditions. The real‐time observations under in situ optical and Raman microscopies indicate that the formation of liquid sulfur during SOR is independent of the E/S ratio and can be preserved over a wide range of operating temperatures. Quantification of the polysulfide reactant concentrations and the amounts of the liquid sulfur product under different charging conditions reveal pseudo‐zero‐order kinetics and E/S ratio‐dependent reaction constants for the SOR process. In addition, under extreme conditions of −20 °C and E/S ratio of 5 µL mg−1, liquid sulfur can still be preserved by following the rapid SOR kinetics. These findings provide new insights into the liquid sulfur generation dynamics in Li─S chemistry, which enables a deeper understanding of the effects of the E/S ratio and working temperature on the oxidation kinetics in LSBs.
Sandwich‐Structured Fluorinated Polyimide Aerogel/Paraffin Phase‐Change Composites Simultaneously Enables Gradient Thermal Protection and Electromagnetic Wave Transmission
Authors: Shi Tao , Jing Jianwei , Qian Zhiqiang , Wu Gaojie , Tian Guofeng , Liu Huan , Wang Xiaodong 
Published: December 2024

AbstractThere is an emerging requirement of advanced functional materials for simultaneous thermal protection and electromagnetic wave‐transparent transmission applications. A novel polyimide (PI) aerogel‐based sandwich‐structural composite is developed to meet such a requirement in this study. This composite is based on a unidirectional fluorinated PI (FPI) aerogel as a lower layer, a nondirectional conventional PI aerogel as a middle layer, and a nondirectional FPI aerogel/paraffin phase‐change composite as an upper layer. The lower layer exhibits a unique unidirectional porous microstructure and an ultralow dielectric constant of 1.04. The upper layer possesses a dynamical temperature regulation capability thanks to its loaded paraffin having a high latent heat capacity of 242.7 J g−1. The presence of the nondirectional PI aerogel middle layer can effectively prevent against the leakage of paraffin from the upper layer to the surface of the composite. Through a rational integration of three functional layers, the developed sandwich‐structured composite not only can provide gradient thermal protection for hot objects over a long period but also exhibits an excellent wave‐transparent capability to establish communication between two electromagnetically shielded electronic devices. With such prominent thermal insulation and wave‐transparent functions, the sandwich‐structured composite exhibits great potential for specific applications in aircraft, spacecraft, radar systems, and satellite communication.
Nanodrug‐Engineered Exosomes Achieve a Jointly Dual‐Pathway Inhibition on Cuproptosis
Authors: Sun Hanxiao , Zou Yang , Chen Zhengtai , He Yan , Ye Kai , Liu Huan , Qiu Lihong , Zhang Yufan , Mai Yuexue , Chen Xinghong , Mao Zhengwei , Wang Wei , Yi Chenggang 
Published: December 2024

AbstractCuproptosis, caused by an intracellular overload of copper (Cu) ions and overexpression of ferredoxin 1 (FDX1), is identified for its regulatory role in the skin wound healing process. This study verifies the presence of cuproptosis in skin wound beds and reactive oxygen species‐induced cells model. To address the two pathways leading to cell cuproptosis, a nanodrug‐engineered exosomes is proposed. A Cu‐chelator (Clioquinol, CQ) polydopamine (PDA)‐modified stem cell exosome loaded with siRNA‐FDX1, named EXOsiFDX1‐PDA@CQ, is designed to efficiently inhibit the two cuproptosis pathways. The functionalized exosomes are loaded into an injectable hydrogel and applied to treat diabetic wounds in mice and acute skin wounds in pigs. The local and controlled release of EXOsiFDX1‐PDA@CQ ensures the retention of the therapeutic agent at wound beds, effectively promoting wound healing. The strategy of engineered exosomes with functional nanoparticles (NPs) proposed in this study offers an efficient and scalable new approach for regulating cuproptosis.
Insight into the synergetic solvent effect of H2O‐ethanol on the adiponitrile hydrogenation
Authors: Zhou Le , Zhang Xin , Han Yu , Li Xin , Zeng Ze‐Quan , Zou Hai‐Kui , Luo Yong 
Published: December 2024

AbstractThe Co@NC catalyst exhibits significant protic solvent preference for hydrogenation of nitriles to primary amines. However, the effect of mixed protic solvents on catalytic hydrogenation has received little attention. Herein, the synergetic solvent effect has been proposed to accelerate the hydrogenation of adiponitrile (ADN) to hexamethylenediamine through H2O‐ethanol hydrogen bond networks on Co@NC catalyst. Experimental screenings on solvents showed that ADN conversion in H2O‐ethanol was 1.6 ~ 5.1 times greater than in single solvents. Kinetic models in H2O/ethanol (vW = 0.6), H2O, and ethanol showed that the solvents effected on H2 transformation dominated the reaction. Isotope labelling and kinetic experiments revealed that H2O and ethanol acted as co‐catalysts through exchanging and transferring hydrogen via hydroxyl groups. Density functional theory calculations confirmed that the energy barrier for proton transfer mediated by H₂O–ethanol was reduced by 0.18 eV compared to proton transfer mediated by H₂O–H₂O dimers.
Modular chem‐bio upcycling of waste poly(ethylene terephthalate) to glycolic acid and 2,4‐pyridine dicarboxylic acid
Authors: Wang Zishuai , Wang Yaoqiang , Xiao Gang , Tang Zequn , Wang Shaojie , Jin Yu , Su Haijia 
Published: December 2024

AbstractUpcycling of waste poly(ethylene terephthalate) (PET) into valuable products represents a promising avenue for advancing carbon neutrality and circular economy. Here, we demonstrate a modular strategy for converting waste PET into glycolic acid (GA) and 2,4‐pyridine dicarboxylic acid (2,4‐PDCA), achieving an upcycling process and 45% reduction in greenhouse gas emissions. We conducted comprehensive studies on PET hydrolysis, PET‐derived ethylene glycol (EG) photooxidation, and PET‐derived terephthalic acid (TPA) bioconversion. Utilizing a plasmon‐active CuPt nanoalloy, EG oxidation proceeds at mild conditions with impressive EG conversion (94.78%) and GA yield (71.98%). Two Escherichia coli strains were employed to convert TPA into 2,4‐PDCA, achieved a 91.03% molar yield. This work successfully accomplishes the comprehensive utilization of waste PET through an environmentally friendly and economically viable strategy, leading to a significant reduction in PET plastic pollution while simultaneously generating substantial economic benefits.
Experimental study of bubble breakup in water and solid suspension by using the image‐based method
Authors: Wang Haozheng , Duan Xiaoxia , Wu Wenjuan , Feng Xin , Huang Dingwang , Zhang Weipeng , Li Zheng , Song Runci , Cao Junya , Yang Chao 
Published: December 2024

AbstractThis work investigates the bubble breakup process with and without particles in turbulent conditions using the image‐based method. A binocular high‐speed camera was employed to capture breakup events. A deep learning‐based image identification software (Large Deformation Dispersed Phase Analysis in Multiphase Flows) and a highly deformed bubble volume/surface area quantification method (Dense Adaptive Segmentation Method) are proposed. An energy barrier is found during the bubble breakup process, with the maximum increase in surface area (ΔSmax) being two to three times the final increase after breakup (ΔSfinal). This indicates that the critical energy required for bubble breakup is underestimated in most breakup models. The presence of suspended particles raises this energy barrier, thus reducing the breakup probability. The daughter bubble size distribution follows an M‐type distribution in water, while the addition of particles leads to a tendency towards equal‐size breakup. This work provides a reliable technology and the experimental data for further clarifying the bubble breakup mechanism.