bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synergistic Engineering of Carbon Nanotubes Threaded NiSe2/Co3Se4 Quantum Dots with Rich Se Vacancies for High‐Rate Nickel–Zinc Batteries
Authors: Li Guochang , Tang Yifan , Cui Shuangxing , Chen Hao , Chong Hui , Han Lei , Pang Huan 
Published: March 2024

AbstractLimited by sluggish reaction kinetics, insufficient electrode utilization and severe volume deformation, designing nickel‐based materials with high capacity and rate capability is still a challenge. Herein, a carbon nanotubes threaded NiSe2/Co3Se4 quantum dots embedded in carbon nanospheres with rich Se vacancies both in NiSe2 and Co3Se4 is elaborately designed via MOF template method. The formation mechanism of the Se vacancies is elucidated for the first time, which is ascribed to the release of gas during the decomposition of organic ligand inhibits the ordered arrangement of atoms. The CNT‐V‐NiCoSe possesses many significant superiorities, such as sufficiently exposed active sites, high electrode utilization, favorable charge‐carrier migration, and relaxed structure deformation. Consequently, the CNT‐V‐NiCoSe electrode shows top‐level specific capacity (384 mAh g−1 at 1 A g−1), ultrahigh rate capability (209 mAh g−1 at 150 A g−1) and remarkable cycling durability. The CNT‐V‐NiCoSe//Zn battery achieves maximum energy density of 615.6 Wh kg−1 and maximum power density of 81.7 kW kg−1. Density functional theory calculations elucidate the Se vacancies improve the density of states at Fermi level, facilitates internal charge transfer, and enhances OH− adsorption ability. This study provides guidance for the preparation of high‐performance electrode materials with rich vacancies by template method.
Remodeling Microenvironment for Implant‐Associated Osteomyelitis by Dual Metal Peroxide
Authors: Guan Xin , Wu Siyuan , Ouyang Sixue , Ren Shuchen , Cui Naiqian , Wu Xiaohu , Xiang Dayong , Chen Wenting , Yu Bin , Zhao Peng , Wang Bowei 
Published: March 2024

AbstractImplant‐associated osteomyelitis (IAOM) is characterized by bone infection and destruction; current therapy of antibiotic treatment and surgical debridement often results in drug resistance and bone defect. It is challenging to develop an antibiotic‐free bactericidal and osteogenic‐enhanced strategy for IAOM. Herein, an IAOM‐tailored antibacterial and osteoinductive composite of copper (Cu)–strontium (Sr) peroxide nanoparticles (CSp NPs), encapsulated in polyethylene glycol diacrylate (PEGDA) (CSp@PEGDA), is designed. The dual functional CSp NPs display hydrogen peroxide (H2O2) self‐supplying and Fenton catalytic Cu2+ ions’ release, generating plenty of hydroxyl radical (•OH) in a pH‐responsive manner for bacterial killing, while the released Sr2+ promotes the in vitro osteogenicity regarding cell proliferation, alkaline phosphatase activity, extracellular matrix calcification, and osteo‐associated genes expression. The integration of Cu2+ and Sr2+ in CSp NPs together with the coated PEGDA hydrogel ensures the stable and sustainable ion release during short‐ and long‐term periods. Benefitted from the injectablity and photo‐crosslink ability, CSp@PEGDA is able to thoroughly fill the infectious site and gelate in situ for bacterial elimination and bone regeneration, which is verified through in vivo evaluation using a clinical‐simulating IAOM mouse model. These favorable abilities of CSp@PEGDA precisely meet the multiple therapeutic needs and pave a promising way for implant‐associated osteomyelitis treatment.
Innovative Biomaterials for Bone Tumor Treatment and Regeneration: Tackling Postoperative Challenges and Charting the Path Forward
Authors: Wang Yu , Zhang Huaiyuan , Qiang Huifen , Li Meigui , Cai Yili , Zhou Xuan , Xu Yanlong , Yan Zhenzhen , Dong Jinhua , Gao Yuan , Pan Chengye , Yin Xiaojing , Gao Jie , Zhang Tinglin , Yu Zuochong 
Published: March 2024

AbstractSurgical resection of bone tumors is the primary approach employed in the treatment of bone cancer. Simultaneously, perioperative interventions, particularly postoperative adjuvant anticancer strategies, play a crucial role in achieving satisfactory therapeutic outcomes. However, the occurrence of postoperative bone tumor recurrence, metastasis, extensive bone defects, and infection are significant risks that can result in unfavorable prognoses or even treatment failure. In recent years, there has been significant progress in the development of biomaterials, leading to the emergence of new treatment options for bone tumor therapy and bone regeneration. This progress report aims to comprehensively analyze the strategic development of unique therapeutic biomaterials with inherent healing properties and bioactive capabilities for bone tissue regeneration. These composite biomaterials, classified into metallic, inorganic non‐metallic, and organic types, are thoroughly investigated for their responses to external stimuli such as light or magnetic fields, internal interventions including chemotherapy or catalytic therapy, and combination therapy, as well as their role in bone regeneration. Additionally, an overview of self‐healing materials for osteogenesis is provided and their potential applications in combating osteosarcoma and promoting bone formation are explored. Furthermore, the safety concerns of integrated materials and current limitations are addressed, while also discussing the challenges and future prospects.
Enhancing Light Outcoupling Efficiency via Anisotropic Low Refractive Index Electron Transporting Materials for Efficient Perovskite Light‐Emitting Diodes
Authors: Sun Shuang‐Qiao , Tai Jing‐Wen , He Wei , Yu You‐Jun , Feng Zi‐Qi , Sun Qi , Tong Kai‐Ning , Shi Kefei , Liu Bo‐Chen , Zhu Min , Wei Guodan , Fan Jian , Xie Yue‐Min , Liao Liang‐Sheng , Fung Man‐Keung 
Published: March 2024

AbstractThanks to the extensive efforts toward optimizing perovskite crystallization properties, high‐quality perovskite films with near‐unity photoluminescence quantum yield are successfully achieved. However, the light outcoupling efficiency of perovskite light‐emitting diodes (PeLEDs) is impeded by insufficient light extraction, which poses a challenge to the further advancement of PeLEDs. Here, an anisotropic multifunctional electron transporting material, 9,10‐bis(4‐(2‐phenyl‐1H‐benzo[d]imidazole‐1‐yl)phenyl) anthracene (BPBiPA), with a low extraordinary refractive index (ne) and high electron mobility is developed for fabricating high‐efficiency PeLEDs. The anisotropic molecular orientations of BPBiPA can result in a low ne of 1.59 along the z‐axis direction. Optical simulations show that the low ne of BPBiPA can effectively mitigate the surface plasmon polariton loss and enhance the photon extraction efficiency in waveguide mode, thereby improving the light outcoupling efficiency of PeLEDs. In addition, the high electron mobility of BPBiPA can facilitate balanced carrier injection in PeLEDs. As a result, high‐efficiency green PeLEDs with a record external quantum efficiency of 32.1% and a current efficiency of 111.7 cd A−1 are obtained, which provides new inspirations for the design of electron transporting materials for high‐performance PeLEDs.
All‐Nanofiber Iontronic Sensor with Multiple Sensory Capabilities for Wearable Electronics
Authors: Wang Sai , Yan Xunchang , Zhang Tong , Li Lin , Li Ru , Ramakrishna Seeram , Long Yun‐Ze , Han Wenpeng 
Published: March 2024

AbstractWearable multi‐functional sensor with practical features is crucial for applications in many areas such as e‐skin, health monitoring, and human‐computer interaction. Herein, an all‐nanofiber flexible breathable iontronic sensor based on polyacrylonitrile (PAN) nanofiber membrane doped with ionic liquid (IL) is prepared by electrospinning technique. Compared to the traditional capacitor's electrode‐dielectric‐electrode sandwich structure, an undoped PAN nanofiber membrane is added between the electrode and the dielectric layer as the spacer. The iontronic sensor demonstrated an impressive linear response in pressure ranges of 0–50 and 50–300 kPa, with linearity values of R12 = 0.992, R22 = 0.998 by adjusting the thickness of the spacer. Additionally, the iontronic sensor demonstrates excellent temperature response attributed to the thermal sensitivity of the IL. It exhibits high sensitivities of 8.5, 31.8, and 71.1% °C−1, along with low detection limits of 0.5°C, across temperature ranges of 20–40, 40–55, and 55–80 °C, respectively. To validate the sensor for practical applications, its uses are demonstrated in various scenarios, such as body joint flexion, heartbeat monitoring, encrypted messaging, and temperature‐sensitive gloves. This study enables the integration of pressure and temperature sensing functions to develop diverse and integrated designs for wearable electronic devices.
Defect‐Induced Rashba Effect in Metal Halide Perovskite Thin Films Deposited on a Flexible Substrate
Authors: Zhang Qi , Lei Sanfeng , Hu Chenyu , Zhu Xixiang , Li Jinpeng , Wang Kai , Zhang Shufang , Yi Ruichen , Yu Haomiao 
Published: March 2024

AbstractMetal halide perovskites (MHPs) exhibit strong spin‐orbit coupling and structural inversion asymmetry, making them ideal for testbeds of Rashba effects and for use in spin‐related optoelectronic and spintronic applications. However, the Rashba band splitting is mainly observed in bulk MHPs so far and is rarely observed in thin films. In this study, a direct observation of Rashba band splitting in MHP thin films at room temperature is reported. By employing a silicone rubber substrate with a high thermal expansion coefficient, the out‐of‐plane tensile strain significantly reduces the activation energy of ion migration in these thin films and leads to a considerable amount of point defects. These point defects disrupt the inversion symmetry and ultimately give rise to the Rashba band splitting. These findings open up new possibilities for manipulating Rashba effects in MHP thin films through device engineering.
A Novel Near‐Infrared Emitting Sr2LuSbO6:Fe3+ Phosphor with Persistent Luminescence Performance
Authors: Su Jiangyue , Pang Ran , Tan Tao , Wang Shangwei , Chen Xuexia , Zhang Su , Zhang Hongjie 
Published: March 2024

AbstractThe near‐infrared (NIR) persistent luminescence (PersL) materials have attracted widespread attention owing to the unique self‐sustained light with good penetrability. Currently, most of the reported NIR PersL materials are activated by Cr3+. Considering the potential toxicity of chromium ions, there is an urgent requirement to explore the Cr3+‐free NIR phosphors. Herein, a novel NIR phosphor Sr2LuSbO6:Fe3+ (SLSO:Fe3+) is prepared and its luminescence properties are systematically studied. The Fe3+‐activated Sr2LuSbO6 exhibits a long‐wavelength NIR emission band centered at 890 nm with a 110 nm full‐width at half maximum (FWHM), and its PersL can last over 18 h. The phosphor shows excellent PersL stability even after being dispersed in solutions of different environments for 7 days. Furthermore, the PersL emitted by the phosphor can penetrate the 2 cm thickness beef, evidencing its good NIR PersL penetration property. This work provides a novel NIR PersL materials based on Fe3+ luminescence for technological applications and also contributes to accelerate the development of new‐generation Fe3+‐doped NIR PersL phosphor toward versatile applications.
Optical Temperature Sensor Evaluation in a Working Gear Motor: Application of Luminescence Thermometry in Industrial Technology
Authors: Hernández‐Álvarez Christian , Martín‐Hernández Pablo I. , Martín Inocencio R. , Rivera‐López Fernando , Hemmerich Hanoch , Grzegorczyk Maciej , Mahlik Sebastian , Runowski Marcin 
Published: March 2024

Abstract3D printing constitutes a technological advancement, revolutionizing contemporary industry by enabling manufacturers to fabricate intricate, customized components efficiently and precisely from digital blueprints. Moreover, the fusion of 3D printing with cutting‐edge materials has given rise to compelling elements boasting a diverse range of applications. For this reason, this work describes the incorporation of a luminescent material, NaYF4, doped with Yb3+ and Er3+, embedded in resin for 3D printing to create motorized luminescent gears. The fabricated luminescent gears take advantage of the intensity ratio between the Er3+ emissions at 525 nm (2H11/2 → 4I15/2) and 550 nm (4S3/2 → 4I15/2), which are thermally coupled, to detect the slight temperature variations that gears undergo through friction. This technique can be complementary to thermovision, proving especially valuable for monitoring temperature in elements where measurement with thermographic cameras or direct contact thermometers is hampered. The findings demonstrate that optical measurements provide enhanced (statistical) precision in temperature readings compared to thermovision, with δT = 0.07 K for luminescence thermometry as opposed to δT = 0.3 K for the thermal camera. This work can inspire new research directions using 3D printing and materials with exciting properties, fostering innovative solutions in contemporary industrial technologies.
Electrochemical Trifluoromethylalkoxylation of Endocyclic Enamides in Batch and Flow
Authors: Leclercq Elise , Barakat Waël , Maazaoui Radhouan , Penhoat Maël , Gillaizeau Isabelle , Chausset‐Boissarie Laëtitia 
Published: March 2024

AbstractA regioselective electrochemical oxytrifluoromethylation of endocyclic enamides is reported. The 1,2‐difunctionalization proceeds under mild conditions and employs the inexpensive bench stable Langlois’ reagent. This multicomponent strategy gives access to a wide range of α,β‐substituted amines by means of various alcohols as nucleophiles in high yields and with good functional group tolerance. In addition, an electrochemically induced C−H trifluoromethylation of enamides has been developed. A continuous flow protocol using a commercial microflow electrochemical reactor was also developed with improved reaction performance and efficiency over traditional batch versions without any supporting electrolyte.
Cities and Urbanization: Balancing the Environmental and Socioeconomic Dimensions of Sustainability
Authors: Loo Becky P.Y. , Tsoi Ka Ho , Feng Xinghua , Zhang Hongsheng , Lin Yinyi , Huang Zhiran , Lafortezza Raffaele , Xu Zhenci , Lin Hui 
Published: March 2024

AbstractWith an increasingly urbanized world, there is an urgent need to examine how cities may evolve and achieve sustainability. This paper systematically looks at the Greater Bay Area (GBA) and the Poyang Lake Region (PLR) in China to examine the spatial processes for insights into cities and urbanization, balancing the environmental and socio‐economic dimensions. A total of 226 805 cells are analyzed to unveil the relationship between sustainability changes in 2015–2019 period and urban form indicators, considering sociodemographic variables, geographical features, and city size as control variables. Two tree‐based machine learning models (Random Forest and XGBoost) are developed. This study provides evidence that a monocentric urban form and a high share of small activity clusters are not good for sustainability. For each urban form indicator, there is a non‐linear relationship with sustainability. The results of the machine learning models reconfirm the sustainability benefits of having a strong second activity cluster comparable to the largest one. When planning cities, some forms of land use buffering are desirable. There is also support for developing relatively large activity nodes and promoting compactness in urban form. Beyond urban form characteristics, the levels of urbanization, economic development, and population are still highly relevant.
Responsible Humidity Sensor by Direct Laser Writing on Cork Substrate
Authors: Houeix Yann , Gerardo Denice , Gómez‐Gijón Sonia , Toral Víctor , Rodríguez Noel , Morales Diego P. , Rivadeneyra Almudena 
Published: March 2024

AbstractA novel laser‐induced graphene (LIG) resistive relative humidity (RH) sensor is successfully fabricated by direct laser writing on a common natural cork sheet. In this work, a straightforward fabrication is presented where LIG, porous multilayer graphene, is generated by a laser photothermal process on a carbon‐based substrate, in this case, an agglomerate cork sheet. The formation of LIG material is revealed by structural and morphological characterization using various analyses, including Raman spectroscopy, X‐ray Photoelectron spectroscopy (XPS), and Scanning Electron Microscopy (SEM). The electrical analyses are conducted to measure the resulting sheet resistance, getting results as low as 31 Ω sq−1. With the laser parameter optimized, a LIG resistive humidity transducer is manufactured and characterized in a climate chamber. This biodegradable sensor shows good linearity with a sensitivity of 0.015%/%RH from 40 to 80% RH. Additionally, the influence of temperature is studied and demonstrated a low impact on the sensor's response toward RH. Furthermore, a proof of concept is successfully implemented by integrating the transducer onto a cork stopper. Considering all, the prospect of creating an easy, fast, scalable, and cost‐effective transducer combined with the use of natural and abundant materials, leads the way for future large‐scale production of sustainable sensors.
Amorphous CoB Modified ZnxCd1‐xS to Construct Schottky Junction for Enhanced Photocatalytic Hydrogen Evolution
Authors: Li Xiang , Wu Siyu , Yang Weiqi , Guo Xin 
Published: March 2024

AbstractIn this paper, nanosized ZnxCd1‐xS is synthesized by a simple hydrothermal method and modified by amorphous CoB. ZnxCd1‐xS/CoB Schottky heterojunction composite photocatalyst is reasonably designed. The adhesion of tiny ZnxCd1‐xS nanoparticles to irregular block CoB is more conducive to the dispersion of ZnxCd1‐xS and better interface connection between catalysts, thus further promoting the migration of photogenerated carriers, protecting the photocorrosion of ZnxCd1‐xS, and finally improving the efficiency of photocatalytic hydrogen production. The composite catalyst ZnxCd1‐xS/CoB‐20 means that the loading content of CoB is 20 wt%, and the photocatalyst has the highest catalytic efficiency under visible light, reaching 1494.09 µmol within 5 h. Through the characterization of XRD, XPS, electrochemical and optical properties of the catalyst, it is proved that the introduction of CoB can significantly inhibit the recombination of photogenerated electron holes and enhance the response to visible light. This study provides a feasible scheme for co‐catalysts to replace precious metal catalysts and effectively reduce ZnxCd1‐xS photocorrosion.
Advanced 3D Network of N‐Doped Graphitic Carbon with FeNi Alloy Embedding for High‐Performance Rechargeable Zn‐Air Batteries
Authors: Pandikassala Ajmal , Kurian Maria , Gangadharan Pranav K. , Torris Arun , Kurungot Sreekumar 
Published: March 2024

AbstractDespite the significant progress in Zn−air batteries (ZABs), their widespread use in the rechargeable sector is hindered due to the scarcity of efficient bifunctional oxygen catalysts that can catalyze both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). To address this, an ORR/OER bifunctional electrocatalyst is designed with ultrafine alloyed FeNi nanoparticles encapsulated in a 3D interconnected N‐ doped carbon network structure, featuring a carbon nitride backbone enclosed in graphitic carbon. The FeNi electrocatalyst (3DFeNiPDC) showed good bifunctional activity toward both ORR and OER in the basic medium with a low overpotential value of 30 mV for ORR and 6 mV for OER compared to its state‐of‐the‐art counterparts Pt/C, and RuO2, respectively. Utilizing 3DFeNiPDC in a rechargeable Zn‐air battery (RZAB) yields an open circuit voltage (OCV) of 1.35 V, a maximum power density of 232 mW cm−2, and an energy density of 707 W h kg−1. Additionally, a flexible RZAB employing 3DFeNiPDC demonstrates an OCV of 1.4 V with various bending angles. These finding suggest 3DFeNiPDC as a viable alternative to noble metal‐based RZABs, offering superior bifunctional electrocatalytic activity and stability, particularly with its enhanced air‐breathing properties facilitating improved operability under practical conditions.
Study on Performance Optimization of Perovskite Solar Cells Based on MAPbI3
Authors: Liang Cang , Huang Zhiyuan , Su Jie , Shi Lei , Liang Suxia , Dong Yuan 
Published: March 2024

AbstractMethylammonium lead iodide (MAPbI3) is a kind of perovskite material, which can effectively absorb photons in sunlight, with an adjustable band gap and relatively stable performance. Aiming at the problem of photoelectric conversion efficiency of perovskite solar cells, this paper proposes a perovskite solar cell with MAPbI3 as an absorption layer. The device structure adopts a trans structure with good stability and low cost, and the hole transport layer adopts poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS) material, which has good electrical properties and interface properties, and has certain transparency. The electron transport layer adopts tin oxide (SnO2), and its energy band structure is beneficial to carrier transport, and it has excellent electron transport performance and chemical stability, which makes it a material for the electron transport layer. The top electrode and the bottom electrode are made of indium tin oxide (ITO) and aurum (Au) with high reliability respectively. The thickness, band gap, and defect concentration of the battery are simulated by solar cell capacitance simulator (SCAPS) software. The results show that the thickness and band gap of the absorption layer has great influence on the performance of the battery. The open‐circuit voltage, short‐circuit current density, filling factor and photoelectric conversion efficiency of the optimized perovskite solar cell reached 1.219 V, 30.1641 mA cm−2, 70.14%, and 25.78% respectively.
Closed‐Loop Wearable Device Network of Intrinsically‐Controlled, Bilateral Coordinated Functional Electrical Stimulation for Stroke
Authors: Xu Shuxing , Li Chengyu , Wei Conghui , Kang Xinfang , Shu Sheng , Liu Guanlin , Xu Zijie , Han Mengdi , Luo Jun , Tang Wei 
Published: March 2024

AbstractInnovative functional electrical stimulation has demonstrated effectiveness in enhancing daily walking and rehabilitating stroke patients with foot drop. However, its lack of precision in stimulating timing, individual adaptivity, and bilateral symmetry, resulted in diminished clinical efficacy. Therefore, a closed‐loop wearable device network of intrinsically controlled functional electrical stimulation (CI‐FES) system is proposed, which utilizes the personal surface myoelectricity, derived from the intrinsic neuro signal, as the switch to activate/deactivate the stimulation on the affected side. Simultaneously, it decodes the myoelectricity signal of the patient's healthy side to adjust the stimulation intensity, forming an intrinsically controlled loop with the inertial measurement units. With CI‐FES assistance, patients’ walking ability significantly improved, evidenced by the shift in ankle joint angle mean and variance from 105.53° and 28.84 to 102.81° and 17.71, and the oxyhemoglobin concentration tested by the functional near‐infrared spectroscopy. In long‐term CI‐FES‐assisted clinical testing, the discriminability in machine learning classification between patients and healthy individuals gradually decreased from 100% to 92.5%, suggesting a remarkable recovery tendency, further substantiated by performance on the functional movement scales. The developed CI‐FES system is crucial for contralateral‐hemiplegic stroke recovery, paving the way for future closed‐loop stimulation systems in stroke rehabilitation is anticipated.