bluuebunny/crossref_metadata_2025_split huggingface dataset:
Self‐Powered Flexible Sensor Array for Dynamic Pressure Monitoring
Authors: Wu Li , Xue Jiangtao , Meng Jianping , Shi Bojing , Sun Wei , Wang Engui , Dong Mengji , Zheng Xuemei , Wu Yuxiang , Li Yusheng , Li Zhou 
Published: March 2024

AbstractFlexible pressure sensors are valuable in applications such as electronic skin, smart robots, artificial prosthetics, and wearable electronics. In this study, a fully packaged, flexible, self‐powered, long‐term stable sensor array based on piezoelectrets is developed for pressure monitoring. A pressure sensor with a microcavity structure and a thickness of 500 µm achieved an impressive piezoelectric coefficient of 23.8 pC N−1 and a fast response time of 93 ms. The sensor yielded an output voltage of 0.26 V when subjected to a force using 0.3 g soybeans, and it displayed a remarkable linear relationship (R2 = 0.992) between force and electricity with pressure ranging from 1.4 to 13.6 N and a sensitivity of 9 mV N−1. Real‐time monitoring of sound vibration, radial artery pulse, and finger movement is demonstrated along with the successful recording of dynamic pressure changes within the porcine knee joint. It holds potential for fields such as monitoring pressure changes in the movement of human bodies and robotics and can contribute significantly to pressure assessment during total knee replacement.
Highly Luminescent and Stable Perovskite Quantum Dots Films for Light‐Emitting Devices and Information Encryption
Authors: Ma Cong , Zhang Meiyun , Zhang Jingru , Liao Jianfei , Sun Hao , Ji Dexian , Pang Ruixue , Zhang Hui , Liu Jiawei , Liu Shengzhong (Frank) 
Published: March 2024

AbstractThe inherent flexibility and excellent mechanical strength of lead halide perovskite quantum dots (LHP‐QDs) films have attracted much attention in the fields of flexible lighting, displays, non‐planar x‐ray imaging, and wearable optoelectronics. Unfortunately, the complicated synthesis process and poor stability limit its practical applications, hence there is an urgent need to develop a feasible fabrication process for films to attain high device performance. Herein, a molecular level hybridization of bridged polysilsesquioxane (BPSQ) is designed as matrix to harvest both flexibility of organics and stability of inorganics, resulting in improved interfacial compatibility between the CsPbBr3 QDs and the matrix through chemical bond anchoring. The CsPbBr3@3‐aminopropyl‐triethoxysilane (APTES)@BPSQ films showcase bright narrow‐band photoluminescence, with a photoluminescence quantum yield of 61% and a half‐peak full width at half maximum of <17 nm. Notably, these films demonstrate excellent environmental stability, UV resistance, water stability (experiencing only an 18% decrease in luminescence intensity after 168 h of water immersion), and high‐temperature stability (withstanding temperatures up to 500 K). Furthermore, white light‐emitting diodes (WLEDs) and anti‐counterfeiting patterns have been fabricated using CsPbBr3@APTES@BPSQ, highlighting their wide application potential in flexible light‐emitting devices and information encryption.
Dynamically Reversible Gelation of Electrolyte for Efficient Wide‐Temperature Adaptable Energy Storage
Authors: Qin Guohui , Zhang Youbin , Qi Zhenguo , He Xiangming 
Published: March 2024

AbstractQuasi‐solid‐state electrolytes (QSEs) via gelation of liquid electrolytes (LEs) are perspective protocols for constructing ingenious potassium‐ion batteries (PIBs) due to the combined advantages of both liquid and solid state. However, most of QSEs yet researched face a trade‐off among low temperature adaptability and safely high temperature operation. Herein, in situ reversible gelation of Ni‐crosslinked pentaerythritol tetrakis (3‐mercaptopropionate) (PETMP‐Ni) co‐polymerized with tyramine‐modified hyaluronic acid (HA‐Tyr) (PHA) modified B, N modified carbon spheres (BNC) enclosing by red P (RP) is backed with compatible electrode‐electrolyte interface with laponite filler (L). Such high reversible in situ gelation displays high low temperature adaptability by LEs, and extraordinary safety in high temperature steered by QSEs, benefiting from topologic space crowding effect (TSCE) and reverse trap of Ni single atoms (Ni SAs). This work enlightens the missing prospects in constructing reversible in situ sol–gel strategy coupled by topologic space crowding effect and reverse SAs trapping stimulate toward revival hybrid electrode for wide‐temperature adaptive batteries.
Fabrication and Energy Collection of Superhydrophobic Ultra‐Stretchable Film
Authors: Zhang Jiahao , Chen Yang , Zhang Yonghui , Wu Siqi , Sun Jing , Liu Xin , Song Jinlong 
Published: March 2024

AbstractSuperhydrophobic surfaces have broad application prospects in various fields due to their special surface wettability. However, most artificial superhydrophobic surfaces are fabricated on rigid substrates or flexible substrates with low deformability, and their performance is difficult to guarantee when a large deformation occurs, hindering further application. Here, a superhydrophobic ultra‐stretchable (SU) film is fabricated by simple template replication and low surface energy modification method using the mixture of vulcanized natural latex (VNR) and silicone emulsion as raw material. The prepared SU film exhibits excellent elasticity and wettability stability and can maintain good superhydrophobicity even after 500% tensile strain. Moreover, droplets dropped on the SU film are bounced in time without any residue, avoiding the accumulation of droplets on the film. Finally, a magnetoelectric generator composed of a SU film and an electromagnetic system are developed to realize the efficient utilization and conversion of droplet energy via droplet impacting and bouncing behavior.
Carbon Mediated Multifunctional Sb2Se3–WSe2 Heterostructure Nanofiber Facilitates Rapid and Stable Na+ Transport
Authors: Wang Jian , Zhang Di , Wang Qiujun , Sun Qujiang , Sun Huilan , Li Zhaojin , Woo Haw Jiunn , Ramesh S. , Wang Bo 
Published: March 2024

AbstractAlloying metal selenides as advanced anode materials for sodium‐ion devices requires overcoming the challenges of high diffusion energy barriers and large volume expansion at high‐power densities. The typical dealloying process is difficult to trigger under fast kinetics, leading to limited capacity utilization. Here, Sb/W‐hybridization precursor is synthesized by one‐step reaction, followed by electrostatic spinning strategy to achieve a localized domain‐limiting effect. Finally, the carbon mediated Sb2Se3–WSe2 heterostructure nanofiber (SbWSe/C/NF) are obtained after carbonization/selenization process. Physical characterization and theoretical calculations reveal that the SbWSe/C/NF‐500 has a heterogeneous structure and abundant edge carbon defects, facilitating rapid Na+ transfer from exterior to interior. Furthermore, compared with the Sb2Se3/C monomer, the SbWSe/C heterostructure shows a significant dealloying reaction at high current densities, enhancing capacity utilization. Resultantly, the Na half‐cell with SbWSe/C/NF‐500 electrode demonstrates excellent rate capability and a high specific capacity of 553.7 mA h g−1 after 250 cycles at 2 A g−1. Meanwhile, the assembled sodium‐ion capacitor exhibits 80.83% capacity retention after 8000 cycles at 3800 W kg−1. The structure design strategy of cationic heterostructures with dual‐carbon introduction provides a reference for developing high‐power anodes.
Bispecific, Exosome‐Mimetic Lipid Nanoparticles Facilitate Dual siRNAs for Synergistic Therapy against Pancreatic Cancer
Authors: Wang Qian , Zhang Zhen , Wang Zihua , Wang Jingyun , Ren Yongbo , Sun Xiaodan , Tian Jie , Kang Feiyu , Zhao Xinming , Yan Hao 
Published: March 2024

AbstractWhile RNA therapeutics hold great promise for combating pancreatic ductal adenocarcinoma (PDAC), the limited therapy outcome due to the insufficient delivery efficiency of vehicles and inadequate innate therapeutic potency for single siRNA hinders the broader application. Herein, report bispecific, exosome‐mimetic lipid nanoparticles (EM‐LNPs) carrying high loads of siKras and siTP53, which can efficiently overcome layers of barriers to accumulate cytoplasm in vitro and in vivo and achieve synergistic treatment for PDAC tumors. EM‐LNPs inherit features of synthetic LNPs and the protein characteristics of exosomes with outer CD47 proteins, membrane‐inserted integrin α6β4, and connexin 43. The siRNAs‐loaded EM‐LNPs can efficiently evade the host immune clearance in the circulation, considerably accumulate and penetrate dense tumors, and simultaneously target EGFR/VEGF of PDAC cells, following leakage into the cytoplasm. The intracellular siKras and siTP53 achieved synergistic therapeutic effects for PDAC cells with as high as 20 times enhancement in vitro and 3.5 times increase in vivo, significantly suppressed xenograft PDAC tumors, considerably reduced lung metastasis, and vastly extended mice survival at a low injection dose. These results explore an approach for delivering multiple gene cargoes to dense PDAC tumors for synergistic therapeutics.
3D Printing of Luminescent Perovskite Quantum Dot–Polymer Architectures
Authors: Jeon Hongryung , Wajahat Muhammad , Park Seobin , Pyo Jaeyeon , Seol Seung Kwon , Kim Namhun , Jeon Il , Jung Im Doo 
Published: March 2024

AbstractOrganic–inorganic perovskite quantum dot (PQD)–polymer composites are emerging optoelectronic materials with exceptional properties that are promising widespread application in next‐generation electronics. Advances in the utilization of these materials depend on the development of suitable fabrication techniques to create 3D architectures composed of PQD–polymer for sophisticated optoelectronics. This study introduces a straightforward and effective method for producing 3D architectures of PQD‐encapsulated high‐performance composites (PQD‐HPCs) through direct‐ink writing (DIW). This method employs an ink composed of prefabricated PQDs and hydroxypropyl cellulose (HPC) in dichloromethane (DCM). HPC, an appropriate organic‐soluble polymer, exhibits optical transparency in the highly volatile DCM and enables the formulation of a stable, room‐temperature extrudable ink. The architectures, which are printed by adjusting the halide ratios (Cl, Br, and I) for the compositions of CH3NH3PbBr1.5I1.5, CH3NH3PbBr3, and CH3NH3PbBr1.5Cl1.5, exhibit single peak photoluminescence emissions of red (639 nm), green (515 nm), and blue (467 nm). Optimizing the printing parameters of DIW enables the precise fabrication of programmed and complex PQD‐HPC 3D architectures for advanced anti‐counterfeiting and information encryption. This method has the potential to enhance the functionality of modern printed electronic devices significantly.
Structural Motifs in Covalent Organic Frameworks for Photocatalysis
Authors: Qin Liyang , Ma Chengdi , Zhang Jian , Zhou Tianhua 
Published: March 2024

AbstractCovalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion and transmission of photogenerated charges during photocatalysis. Currently, a considerable number of COFs are used as metal‐free organic semiconductor photocatalysts. This review aims to understand the relationships between the structure and photocatalysis performance of COFs and provides in‐depth insight into the synthetic strategy to improve photocatalysis performance. Subsequently, the review focuses on the structural motif of COFs in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, hydrogen peroxide generation, and organic compound transformations. Last, in conjunction with the significant progress achieved and the challenges yet to be overcome, a candid discussion is undertaken regarding the challenges and opportunities in the field of COF photocatalysis, accompanied by the presentation of potential research avenues and future directions. This review seeks to provide readers with a comprehensive understanding of the pivotal role of COFs in the field of photocatalysis, to offer robust guidance for the innovative utilization of COFs in future sustainable photocatalysis.
Argon Plasma Bombardment Induces Surface‐Rich Sn Vacancy Defects to Enhance the Thermoelectric Performance of Polycrystalline SnSe
Authors: Wu Chunlu , Shi Xiao‐Lei , Li Meng , Zheng Zhuanghao , Zhu Liangkui , Huang Keke , Liu Wei‐Di , Yuan Pei , Cheng Lina , Chen Zhi‐Gang , Yao Xiangdong 
Published: March 2024

AbstractNanoscale defects can induce the effective modulation of carrier concentration, mobility, and phonon scattering to secure high thermoelectric performance in semiconductors. However, it is still limited to effectively controlling nanoscale defects in thermoelectric materials. Here, argon plasma bombardment is employed to introduce a large number of point defects and dislocations in microcrystalline SnSe powders, synthesized by a solvothermal method. After sintering these powders into polycrystalline bulk materials, bulk SnSe shows the ZT increasing by up to 66.7% (from 0.36 to 0.6 at 773 K). Through detailed micro/nanostructure characterizations and first‐principles calculations, the underlying mechanism is elucidated for the evaluation of thermoelectric performance. This work provides a deep understanding of the mechanism of nanoscale defects in modulating thermoelectric performance and presents experimental evidence and experience for the design and synthesis of efficient thermoelectric materials, making significant contributions to future green energy technologies.
Freezing Shrinkage Dynamics and Surface Dendritic Growth of Floating Refractory Alloy Droplets in Outer Space
Authors: Wang Haipeng , Liao Hui , Hu Liang , Zheng Chenhui , Chang Jian , Liu Dingnan , Li Mingxing , Zhao Jiongfei , Xie Wenjun , Wei Bingbo 
Published: March 2024

AbstractThe freezing shrinkage and dendritic growth are of great importance for various alloys solidified from high‐temperature liquids to solids since they dominate microstructure patterns and follow‐up processing. However, the microgravity freezing shrinkage dynamics is scarcely explored on the ground as it is hard to suppress the strong natural convection inside liquid alloys. Here, a series of in‐orbit solidification experiments is conducted aboard the China Space Station with a long‐term stable 10−5 g0 microgravity condition. The highest temperature up to 2265 K together with substantial liquid undercoolings far from a thermodynamically stable state are attained for both Nb82.7Si17.3 and Zr64V36 refractory alloys. Furthermore, the solidification under microgravity of a droplet is simulated to reveal the liquid–solid interface migration, temperature gradient, and flow field. The microgravity solidification process leads to freezing shrinkage cavities and distinctive surface dendritic microstructure patterns. The combined effects of shrinkage dynamics and liquid surface flow in outer space result in the dendrites growing not only along the tangential direction but also along the normal direction to the droplet surface. These space experimental results contribute to a further understanding of the solidification behavior of liquid alloys under a weaker convection condition, which is often masked by gravity on the ground.
Non‐Oxidative Mechanism in Oxygen‐Based Magneto‐Ionics
Authors: Bhatnagar‐Schöffmann Tanvi , Schöffmann Patrick , Resta Andrea , Lamperti Alessio , Bernard Guillaume , Kovács András , Largeau Ludovic , Durnez Alan , Harouri Abdelmounaim , Lafosse Xavier , Ourdani Djoudi , Syskaki Maria‐Andromachi , Roussigné Yves , Ono Shimpei , Dunin‐Borkowski Rafal E. , Langer Jürgen , Ravelosona Dafiné , Belmeguenai Mohamed , Solignac Aurelie , Herrera Diez Liza 
Published: March 2024

AbstractThe Ta/CoFeB/Pt/MgO/HfO2 system is investigated, whose magnetic anisotropy can be controlled through magneto‐ionic gating, using both ionic liquid and solid state gating, via a non‐oxidative mechanism combining reversible and irreversible gating effects. Analysis of X‐ray absorption spectroscopy at the Co and Fe edges reveals no indications of oxidation after gating, while a reversible change at the oxygen K edge suggests the involvement of oxygen species in the magneto‐ionic process. In addition, X‐ray diffraction measurements reveal that gating can irreversibly increase the crystalline volume of MgO, through an increase in the MgO/Mg(OH)2 ratio. This is in line with measurements in solid state devices showing that in a series of 150 gating cycles a reversible effect combines with a progressive increase in the strength of the perpendicular magnetic anisotropy contribution that saturates after extensive cycling. Consequently, the observed gate‐induced changes in magnetic anisotropy can be attributed to the combined effects of Mg(OH)2 dehydration into MgO (irreversible) and most likely a gentle reordering of oxygen species at the CoFeB interface (reversible) leading to a non‐oxidative magneto‐ionic mechanism. This study provides valuable insights into the underlying mechanisms governing the complex magneto‐ionic phenomena, including the coexistence of both reversible and irreversible effects, and a pathway to voltage‐control of crystalline order in spintronics materials.
Switchable Slippery Surfaces Controlled by a Humidity‐Induced Glass Transition of Polyelectrolyte‐Grafted Brushes
Authors: Merriman Stephen , Singla Saranshu , Dhinojwala Ali 
Published: March 2024

AbstractPolymer brushes have found extensive applications as nano‐scale surface coatings with responsive properties, particularly in achieving tunable friction in solvent environments. Here, a special property of hygroscopic polyelectrolyte‐grafted brushes, where the friction forces change by over two orders of magnitude within a narrow range in humidity is reported. Using mechanical measurements of nano‐scale modulus and water absorption coupled with friction and surface‐sensitive spectroscopy, this sharp change in friction is controlled by a humidity‐induced glass transition that abruptly shifts the mode of sliding is demonstrated. Contrary to expectations based on conventional thinking regarding brush lubrication, friction remains large and humidity‐independent below the glass transition even for systems that absorb as much as 30–40% water by volume. This results in an abrupt change in friction past the glass transition humidity. Tuning the chemistry of brushes and their humidity‐induced glass transition offers the tunability to control the on/off friction (or slipperiness) for nanoactuators, ratchets, and catheters, without the need for externally applied lubricating liquids.
Voltage Detector Integrated Circuit as Versatile Toolbox for Charge Management of Thermally Chargeable Supercapacitor
Authors: Horike Shohei , Ebihara Teruo , Nakae Ryoko , Mukaida Masakazu , Koshiba Yasuko , Ishida Kenji , Wei Qingshuo 
Published: March 2024

AbstractInternet of Things (IoT) is crucial for a sustainable society from the viewpoints of optimization of energy consumption and using timing, thus aiding reduced CO2 emissions. Traditional power supply methods such as batteries are impractical for driving the trillions of sensors that future systems will likely utilize for collecting extensive environmental information. Thermoelectric power generators that enable direct heat‐to‐electricity energy conversion are considered a promising power supplying technology without maintenance because thermal energy is a ubiquitous energy source. This study develops a new class of thermoelectric modules using redox‐free electrolytes—‐thermally chargeable supercapacitor (TCS)—‐with extremely high thermoelectromotive force, generating over 2 V from a temperature difference of ≈65 °C without requiring a DC‐to‐DC converter. Additionally, using a voltage detector is demonstrated to be a versatile and efficient toolbox for the charge management of TCS. Optimization of the circuit comprising the TCS module with the ultrahigh open‐circuit voltage and voltage detector enables the automatic charging of a large capacitor, which intermittently powers different devices such as a beacon, LED, piezo speaker, and motor with the desired frequency. This approach represents a significant step toward sustainable energy in the context of low‐grade thermal energy harvesting and optimized energy consumption through IoT.
Vat Photopolymerization 3D Printing Hydrogels and Bionic Adhesive Devices: A Minireview
Authors: Shi Lei , Wang Yixian , Xu Xin , Liu Desheng , Ji Zhongying , Wang Xiaolong 
Published: March 2024

AbstractVivid biological structures with reversible adhesive properties are widely found in nature. Although current biomimicking adhesion systems have attracted extensive attention, unmet challenges remain in terms of excellent adhesion preservation, precise structural fabrication, and good environmental compatibility. By combining advanced vat photopolymerization 3D printing technology with hydrogel materials with excellent environmental adaptability, bioinspired adhesion devices present satisfactory application prospects. Herein, a systematic overview of bioinspired hydrogel adhesion devices from the perspectives of material design, structural design, and fabrication is presented. First, the main types and application prospects of vat photopolymerization 3D printed hydrogels are introduced. Subsequently, the research progress on hydrogel‐based vat photopolymerized 3D printed bionic adhesion devices is detailed. Future developments, such as balancing unmet challenges and expected opportunities, in 3D printable multiscale bionic adhesive devices are presented.
Improving Hybrid Tin Halide Layers by Melt Assisted Annealing for Lead‐Free Perovskite Solar Cells
Authors: Gao Can , Wang Xinyao , Yang Qingyun , Wang Xiaochun , Gao Chunxiao , Liu Xizhe 
Published: March 2024

AbstractHybrid tin halides with formamidinium cations become a promising candidate for eco‐friendly solar cells, which achieves the best photovoltaic performance among various lead‐free perovskite solar cells (PSCs). Unfortunately, the low quality of perovskite layers and the oxidation of Sn2+ ions degrade the performance of devices, leading to an obviously lower power conversion efficiency (PCE) compare to hybrid lead halides. Additive engineering is a facile strategy for improving the quality of perovskite layers. In this work, the 2‐aminopyrazine (APZ) additive is investigated for depositing FA0.8PEA0.2SnI2.8Br0.2 layers, and corresponding PSCs are examined. It is found that the melting point of APZ additives drops below the annealing temperature of perovskite layers by the intermolecular interaction with formamidinium iodide (FAI). The melt phase at the grain boundaries encourages the diffusion of ions in the annealing process, leading to an improved quality of perovskite layers. And the formation of APZ‐SnI2 complex also inhibits the oxidation of Sn2+ ions. Consequently, the defect density and the recombination are significantly reduced in PSCs, resulting in an increase of PCEs from 11.4% to 13.0% and a simultaneous improvement of device stability. This work demonstrates a strategy for improving tin‐based PSCs based on melt assisted annealing and coordination interaction.