bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recent Progress on Computation‐Guided Catalyst Design for Highly Efficient Nitrogen Reduction Reaction
Authors: Dai Tian‐Yi , Wang Tong‐Hui , Wen Zi , Jiang Qing 
Published: April 2024

AbstractElectrochemical nitrogen reduction reaction (NRR) for ammonia synthesis has attracted great interest in recent years, which presents a carbon‐free alternative to the energy‐intensive Haber–Bosch process. Besides, NRR also provides a promising coverage route of renewable energy since NH3 is considered the second generation of hydrogen energy while possessing established technologies of liquefaction, storage, and transport. However, there are long‐term challenges in catalyst design for NRR due to its low intrinsic activity and unsatisfied selectivity. Fortunately, by conducting extensive explorations in this field, much progress is achieved in boosting the NRR performance. Herein, from a view of the atomic/electronic level, three promotion effects are summarized for NRR (i.e., electron effect, geometry effect, and ligand effect), which tackle the challenges of activity and selectivity. Representative studies with taking fully advantages of the promotion effects are reviewed, which realized remarkable NRR performance. Finally, the future research directions and prospects are discussed. It is highly expected that this review will enable the advancement of NRR catalysts and promote the further development of electrochemical NRR.
Significantly Improving the Flux Pinning of YBa2Cu3O7‐δ Superconducting Coated Conductors via BaHfO3 Nanocrystal Addition Using Multistep Film Growth Method
Authors: Huang Rongtie , Chen Jing , Liu Zhiyong , Wang Gang , Cai Chuanbing 
Published: April 2024

AbstractA novel multistep film growth method is developed to prepare high‐performance BaHfO3(BHO)‐nanocrystal‐added YBa2Cu3O7−δ(YBCO) tapes. Upscaled YBCO tapes with high concentrations of 6.2 nm BHO nanocrystals exhibit better self‐field and in‐field performances when grown by the multistep method compared to those grown by the traditional method. The in‐field critical current (Ic) of the 1.6‐µm‐thick BHO‐added YBCO film at 30 K@3 T is enhanced by 50% in the optimal traditional cases, whereas it is further increased to 180% using a multistep growth strategy. The high‐performance YBCO layer is thickened to 2.3 µm using the multistep method, and the improvement of in‐field Ic at 30 K@3 T is enhanced by 215% to 360 A per 4 mm‐width compared to the pristine. The BHO size evolution during the high‐temperature process reveals that the added nanocrystals coarsened by 4 to 10.5 nm in both the traditional and multistep cases, thereby indicating that the further improvement in performance is attributed to the better film quality grown by the multistep method. This technique can be applied directly to the preparation of scaled REBCO tapes with a length of hundreds of meters.
Nanotransfer Printing of Functional Nanomaterials on Electrospun Fibers for Wearable Healthcare Applications
Authors: Ha Ji‐Hwan , Ko Jiwoo , Ahn Junseong , Jeong Yongrok , Ahn Jihyeon , Hwang Soonhyoung , Jeon Sohee , Kim Dahong , Park Su A , Gu Jimin , Choi Jungrak , Han Hyeonseok , Han Chankyu , Kang Byeongmin , Kang Byung‐Ho , Cho Seokjoo , Kwon Yeong Jae , Kim Cheolmin , Choi Sunkun , Sim Gi‐Dong , Jeong Jun‐Ho , Park Inkyu 
Published: April 2024

AbstractWith the advancement of functional textile technology, there is a growing demand for functional enhancements in textiles from both industrial and societal perspectives. Recently, nanopattern transfer technology has emerged as a potential approach for fabricating functional textiles. However, conventional transfer methods have some limitations such as transfer difficulties on curved fiber surfaces, polymer residues, and delamination of transferred nanopatterns. In this study, an advanced nanopattern transfer method based on surface modification and thermoforming principles is applied to microscale electrospun fibers. This transfer method utilizes covalent bonding and mechanical interlocking between nanopatterns and the fibers without requiring extra adhesives. Various nanopatterns transferred electrospun fibers possess significant potential for diverse wearable healthcare applications. This work introduces two specific application scenarios in the field of wearable healthcare, both of which leverage the light: diagnostics and antimicrobials. Versatile textile with silver nanogap‐pattern detects glucose in sweat, diagnosing hypoglycemia and diabetes by shifting Raman peaks from 1071.0 to 1075.4 cm−1 for 0 to 150 µm glucose. Additionally, a bactericidal mask using visible light to induce the photocatalytic degradation effect of titanium dioxide and silver nanopatterns is developed. Bactericidal efficacy against Escherichia coli and Staphylococcus aureus is 99.9% due to photolysis from visible light irradiation.
Hydrogen‐Bonding Interactions Between Terpolymers Enable Excellent Device Efficiency and Operational Stability of Non‐Halogenated Solvent‐Processed Polymer Solar Cells
Authors: Arshad Fiza , Haris Muhammad , Oh Eun Sung , Ullah Zakir , Ryu Du Hyeon , Lee Seungjin , Lee Hang Ken , Lee Sang Kyu , Kim Taek‐Soo , Kwon Hyung‐Wook , Song Chang Eun , Shin Won Suk 
Published: April 2024

AbstractAlthough polymer solar cells (PSCs) have shown considerable power conversion efficiency (PCE) potential, their poor operational stability is a major obstacle for their future commercialization. In this study, the ternary‐blend strategy based on D1–A–D1–D2‐type conjugated random terpolymers containing hydrogen–bonding sites is employed to simultaneously improve device efficiency and long‐term stability. Notably, the PM6‐ThEG:PM6‐ThOH:Y6‐BO ternary‐blend system exhibits a remarkable PCE of 17.2% with superior photo, thermal, and mechanical stability, outperforming those of binary devices based on PM6, PM6‐ThEG, and PM6‐ThOH polymer donors. These outstanding results are likely attributed to the robust molecular lock via hydrogen bonds between PM6‐ThEG and PM6‐ThOH terpolymers, which can induce strong intermolecular packing, a dense 3D terpolymer network, and optimized morphology. These results also correlate well with the computational study. A comprehensive analysis of optoelectronic and morphological properties as well as the exploration of underlying physical mechanisms collectively verifies the effectiveness of this approach based on mixed random terpolymers with hydrogen‐bonding moiety to achieve the non‐halogenated solvent‐processed PSCs with exceptional efficiency and operational stability.
An Electrostatic‐Induction‐Enabled Anti‐Touching Hydrogel Dressing for Chronic Wound Care
Authors: Yan Ren , Sun Zhaoqing , Du Wanyu , Liu Nian , Sun Qizeng , Li Peng , Liang Fei , Zhu Yangzhi , Huang Wei , Yu Hai‐Dong 
Published: April 2024

AbstractChronic wounds are inherently vulnerable to external mechanical contact owing to their impaired physiological states. Accidental touching may lead to secondary damage to delicate wound tissues, including deterioration of tissue and inflammation, thereby prolonging the healing process. In addition, patients encounter nociceptive sensations, indicative of physical discomfort and potential distress. However, the traditional dressings for chronic wounds fail to convey adequate perceptual information to prevent mechanical trauma. An electrostatic‐induction‐enabled anti‐touching hydrogel dressing (EAHD) is proposed, which promotes wound healing and reduces touching‐induced injuries. The EAHD combines a proximity sensor and a pro‐healing hydrogel. The proximity sensor can detect approaching objects, enabling remote perception. More importantly, EAHD and a wireless alarm system are integrated to warn against the detected potential hazards such as unintentional touching. Meanwhile, the EAHD significantly accelerates wound healing in preclinical diabetic mice, ≈38% faster than that of the control group. This study proposes a novel strategy for multifunctional wound dressing that promotes wound healing and prevents accidental touching‐induced secondary damage to the wound.
Demystifying the Influence of Precursor Structure on S‐Doped Hard Carbon Anode: Taking Glucose, Carbon Dots, and Carbon Fibers as Examples
Authors: Huang Yujie , Hu Xinyu , Li Yujin , Zhong Xue , He Zidong , Geng Zhenglei , Gan Siyang , Deng Wentao , Zou Guoqiang , Hou Hongshuai , Ji Xiaobo 
Published: April 2024

AbstractHeteroatom doping is a promising strategy for adjusting the microstructure of hard carbon (HC) to promote its electrochemical sodium storage performance. However, clarifying the doping sites of heteroatoms and effectively regulating their doping levels remain serious challenges. Herein, this work reveals the impact of three distinct structural precursors on S‐doped hard carbon: namely glucose (small organic molecule), carbon dots (CDs, intermediate state between organic and inorganic), and graphitized carbon fibers (inorganic carbon materials). It is demonstrated that the S‐doped HC derived from CDs possesses a more significant number of C─S bonds within its carbon framework, which is attributed to the preferential bonding between sulfur and short polymeric chains abundant in unsaturated functional groups. And these chains cluster prominently on the surface of CDs, enhancing the affinity of sulfur. Furthermore, as a prominent feature of CDs, the extremely small size inherently distinguishes them from other precursors, enabling them to serve as fundamental units for constructing various carbon microstructures, such as three‐dimensional (3D) structure. In summary, this study explores the influence of different precursor structures on heteroatom doping, with CDs identified as the most useful precursor.
Photo‐Curable 3D Printing of Circularly Polarized Afterglow Metal–Organic Framework Monoliths
Authors: Zheng Ming‐Yi , Jin Zhi‐Bin , Ma Zhi‐Zhou , Gu Zhi‐Gang , Zhang Jian 
Published: April 2024

AbstractDeveloping coordination complexes (such as metal–organic frameworks, MOFs) with circularly polarized luminescence (CPL) is currently attracting tremendous attention and remains a significant challenge in achieving MOF with circularly polarized afterglow. Herein, MOFs‐based circularly polarized afterglow is first reported by combining the chiral induction approach and tuning the afterglow times by using the auxiliary ligands regulation strategy. The obtained chiral R/S‐ZnIDC, R/S‐ZnIDC(bpy), and R/S‐ZnIDC(bpe)(IDC = 1H‐Imidazole‐4,5‐dicarboxylate, bpy = 4,4′‐Bipyridine, bpe = trans‐1,2‐Bis(4‐pyridyl) ethylene) containing a similar structure unit display different afterglow times with 3, 1, and <0.1 s respectively which attribute to that the longer auxiliary ligand hinders the energy transfer through the hydrogen bonding. The obtained chiral complexes reveal a strong chiral signal, obvious photoluminescence afterglow feature, and strong CPL performance (glum up to 3.7 × 10−2). Furthermore, the photo‐curing 3D printing method is first proposed to prepare various chiral MOFs based monoliths from 2D patterns to 3D scaffolds for anti‐counterfeiting and information encryption applications. This work not only develops chiral complexes monoliths by photo‐curing 3D printing technique but opens a new strategy to achieve tunable CPL afterglow in optical applications.
Dynamic Reversible Oxidation‐Reduction of Iodide Ions for Operationally Stable Perovskite Solar Cells under ISOS‐L‐3 Protocol
Authors: Lu Xiaoyi , Sun Kexuan , Wang Yaohua , Liu Chang , Meng Yuanyuan , Lang Xiting , Xiao Chuanxiao , Tian Ruijia , Song Zhenhua , Zhu Zewei , Yang Ming , Bai Yang , Ge Ziyi 
Published: April 2024

AbstractDespite rapid advancements in the photovoltaic efficiencies of perovskite solar cells (PSCs), their operational stability remains a significant challenge for commercialization. This instability mainly arises from light‐induced halide ion migration and subsequent oxidation into iodine (I2). The situation is exacerbated when considering the heat effects at elevated temperatures, leading to the volatilization of I2 and resulting in irreversible device degradation. Mercaptoethylammonium iodide (ESAI) is thus incorporated into perovskite as an additive to inhibit the oxidation of iodide anion (I−) and the light‐induced degradation pathway of FAPbI3→FAI+PbI2. Additionally, the formation of a thiol‐disulfide/I−‐I2 redox pair within the perovskite film provides a dynamic mechanism for the continuous reduction of I2 under light and thermal stresses, facilitating the healing of iodine‐induced degradations. This approach significantly enhances the operational stability of PSCs. Under the ISOS‐L‐3 testing protocol (maximum power point (MPP) tracking in an environment with relative humidity of ≈50% at ≈65 °C), the treated PSCs maintain 97% of their original power conversion efficieney (PCE) after 300 h of aging. In contrast, control devices exhibit almost complete degradation, primarily due to rapid thermal‐induced I2 volatilization. These results demonstrate a promising strategy to overcome critical stability challenges in PSCs, particularly in scenarios involving thermal effects.
Bone Mimetic Polyetheretherketone Implant Coating Facilitates Early Osseointegration
Authors: Knaus Jennifer , Tian Liangfei , Schuhmacher Tamara , Hauck Christof R. , Cölfen Helmut 
Published: April 2024

AbstractAging society demands advanced bone implants that can achieve long‐term success through osseointegration at the bone‐implant interface. Polyetheretherketone (PEEK), a bioinert implant material, often struggles with connecting to existing bone tissue, leading to inflammation and implant replacement. Following nature's lessons, a new strategy is introduced that masks the surface of bio‐ and chemically inert Polyetheretherketone implants with a covalently anchored bone‐mimetic surface. This method transforms PEEK into a bone‐integrative material by grafting a ≈300 nm thick gelatin layer onto its surface, subsequently mineralized with calcium phosphate. Herein, it is showed that this surface modification for implant materials combines excellent bulk implant properties with the characteristic structure and functional properties of natural bone. In vitro biocompatibility assays, employing NIH‐3T3 fibroblast and MC3T3‐E1 osteoblast cell lines, confirm the enhanced biocompatibility of the modified material. This strategy offers promising prospects for improving bone implants and exemplifies the adaptation of a non‐osseointegrative material to a bone‐like interface.
Distinct Quantum States in Topological Insulator Surfaces of Nanowires and Nanoribbons of Bismuth Selenide (Bi2Se3)
Authors: Nweze Christian , Glier Tomke E. , Rerrer Mika , van Heek Malte , Scheitz Sarah , Akinsinde Lewis O. , Kohlmann Niklas , Kienle Lorenz , Huang Yalan , Parak Wolfgang J. , Huse Nils , Rübhausen Michael 
Published: April 2024

AbstractTopological insulators (TIs) exhibit unconventional quantum phases that can be tuned by external quantum confinements. The geometry of the surface of 3D TIs plays a crucial role. For example, the geometrical crossover from 2D surfaces to a 1D cylinder results in a novel state with a Spin‐Berry Phase (SBP). Surface‐Enhanced Raman Scattering (SERS) with a sub‐micron spatial resolution is utilized to study the quantum‐confinement effects of quasi‐relativistic electrons along the perimeter of the circular bismuth selenide (Bi2Se3) nanowires. The presence of diameter‐dependent SERS in nanowires can be attributed to the self‐interference effect of the electronic wave‐function along the circumferential direction of the TI nanowires. Nanoribbons with rectangular cross‐section do not show this effect. Further gold nanoparticles are applied as plasmonic SERS sensors attached to the distinct topological surface states to manipulate quasi‐relativistic surface states of nanoribbons and nanowires. This technique enables to discriminate between different geometries of TI surface states and also opens a novel pathway to probe the quantum properties of topological surface states.
Low Contact Resistivity of Bi2Te3‐Based Films and Metals Interfaces Enabled by Orientation Regulation
Authors: Dong Guoying , Xiong Yang , Zhao Linghao , Feng Jianghe , Li Juan , Gao Shufang , Liu Ruiheng 
Published: April 2024

AbstractThe contact resistivity originating from the metal–semiconductor interface is a crucial factor for conversion efficiency of thermoelectric films devices. Due to anisotropic nature of state‐of‐art Bi2Te3 films, the contact resistivity also needs to match with the different orientations in/out‐plane film configurations. Here, a series of bismuth telluride (Bi2Te3) films with different orientations are deposited, and the contact resistivity between Ti/Cr/Cu and Bi2Te3‐based films is studied in detail. The increased (00l) orientation can effectively reduce the contact resistivity mainly due to the enhanced Tunneling effect. Finally, a low contact resistivity of 0.84 µΩ cm2 is observed in highly (00l)‐orientated Bi2Te3 film in contact with Cr. This work provides an effective method to control contact resistivity by adjusting the orientation of film, and also provides guidance on how to further improve the performance of thin film‐TEDs with different configurations.
Site‐Selective S‐Arylation of 1‐Thiosugars with Aryl Thianthrenium Salts through Copper(I)‐Mediated, Photoredox‐ Catalyzed Reactions
Authors: Fang Yini , Liang Qing , Shi Lingling , Wen Jiayang , Liu Xinzhang , Hong Xuerui , Zha Xiaoming , Ji Fei 
Published: April 2024

AbstractA process for the synthesis of aryl thioglycosides from the aryl thianthrenium salts and 1‐thiosugars is achieved by copper(I)‐mediated, photoredox‐catalyzed reactions. The desired products could be obtained in 32% to 78% yield after irradiation with 34 W blue light at room temperature. Various functional groups, especially including halogen groups, were well tolerated under standard reaction conditions. This strategy differs conceptually from all previous S‐glycosylations in that thiosugar functionality could be incorporated into complex natural products or drugs at a late stage site‐selectively, which has not been shown via aryl halides and aryldiazonium salts.
Self‐ or Acridinium‐Catalyzed Electrophotosynthesis of Thiocyanato Heterocycles from Activated Alkenes
Authors: Gong Kaixing , Ma Yingchun , Yu Ping , Gao Shulin , Li Yanni , Liang Deqiang , Sun Shaoguang , Wang Baoling 
Published: April 2024

AbstractWhile the emergence of electrophotochemistry provides opportunities, such a chemistry at this stage suffers from limited reaction types and high photocatalyst loadings. A self‐catalyzed electrophotosynthesis as well as one with a low photocatalyst loading is presented. These external‐oxidant‐free cyclizations are enabling and applicable to a range of activated alkenes, affording a diverse array of thiocyanato heterocycles including 4‐pyrrolin‐2‐ones, isoquinoline‐1,3‐diones, indolo[2,1‐a]isoquinolin‐6(5H)‐ones, benzoimidazo[2,1‐a]isoquinolin‐6(5H)‐ones and indolin‐2‐ones, and the protocols are amenable to the late‐stage diversification of complex molecular architectures as well as gram‐scale syntheses. Sunlight could serve as the light source, and the reaction could be conducted in an all‐solar‐driven mode using a commercially available photovoltaic panel to produce electricity.
Phosphine‐Catalyzed Domino Annulation Reactions of o‐Aminotrifluoroacetophenone Derivatives with Morita–Baylis–Hillman Carbonates: Construction of Tetrahydrofuro[3,2‐b]indolines
Authors: Zhu Yannan , Zhao He , Li Qiuyun , Fang Bo , Wang Yi‐Ning , Qi Gang 
Published: April 2024

AbstractThe domino annulation reactions of o‐aminotrifluoroacetophenone derivatives and MBH carbonates enabled by PPh3 have been reported, which provide a series of tetrahydrofuro[3,2‐b]indolines containing a CF3‐substituted tetrasubstituted carbon stereocenters in yields of 74 to 95% and >20:1 dr. In this process, MBH carbonates were used as C1/C3 synthons. The MTT assay shows that the products exhibit the activity of inhibitory effect on proliferation on Hela cancer cell line.
Access to 4‐Membered Heterocycles via Visible‐Light Triggered Intramolecular Cyclization from Alkynes: Bypassing Unfavorable 4‐endo‐dig Cyclization
Authors: Sharma Arun , Choi Ahhyeon , Yim Daniel , Kim Hyungjun , Kim Hyunwoo 
Published: April 2024

AbstractWe describe a catalyst, oxidant, and coupling‐reagent free strategy to access 4‐membered heterocycles, representing a unique example of visible‐light triggered intramolecular cyclization of propargylic alcohols and amines to access oxetanones and azetidinones respectively. Despite the direct 4‐endo‐dig cyclization from these starting materials has proven to be unfavorable, the formation of key p‐quinone methide intermediacy allows an efficient bypass for regioselective 4‐exo‐trig cyclization, resulting in the formation of the desired 4‐membered heterocycles. This mild and operationally simple protocol facilitates the synthesis of products with distinct substitution patterns such as quaternary α‐carbons, and enables late‐stage functionalization.
Deep Learning‐Assisted Sensitive 3C‐SiC Sensor for Long‐Term Monitoring of Physical Respiration
Authors: Tran Thi Lap , Van Nguyen Duy , Nguyen Hung , Van Nguyen Thi Phuoc , Song Pingan , Deo Ravinesh C , Moloney Clint , Dao Viet Dung , Nguyen Nam‐Trung , Dinh Toan 
Published: April 2024

AbstractIn human life, respiration serves as a crucial physiological signal. Continuous real‐time respiration monitoring can provide valuable insights for the early detection and management of several respiratory diseases. High‐sensitivity, noninvasive, comfortable, and long‐term stable respiration devices are highly desirable. In spite of this, existing respiration sensors cannot provide continuous long‐term monitoring due to the erosion from moisture, fluctuations in body temperature, and many other environmental factors. This research developed a wearable thermal‐based respiration sensor made of cubic silicon carbide (3C‐SiC) using a microfabrication process. The results showed that as a result of the Joule heating effect in the robustness 3C‐SiC material, the sensor offered high sensitivity with the negative temperature coefficient of resistance of approximately 5,200ppmK‐1, an excellent response to respiration and long‐term stability monitoring. Furthermore, by incorporating a deep learning model, this fabricated sensor can develop advanced capabilities to distinguish between the four distinct breath patterns: slow, normal, fast, and deep breathing, and provide an impressive classification accuracy rate of ≈ 99.7%. The results of this research represent a significant step in developing wearable respiration sensors for personal healthcare systems.
Improved Numerical Estimation Method for Surface Wave Attenuation on Metasurfaces
Authors: Suzuki Kota , Dang Phuc Toan , Homma Haruki , Fathnan Ashif A. , Phang Sendy , Wakatsuchi Hiroki 
Published: April 2024

AbstractComprehensive numerical tools to investigate and analyze the surface wave attenuation on a metasurface waveguide that consists of periodic patches deposited on a dielectric substrate are presented. The surface wave attenuation is evaluated in both waveguide and open‐space environments at high frequencies around the 28‐GHz band. Two approaches including a driven modal approach and an integrated eigenmode approach for investigating the attenuation behaviors in a metasurface waveguide operating in transverse electromagnetic (TEM) mode are employed. These results show different attenuation values depending on the waveguide height due to an unavoidable coupling issue despite the same metasurface design. Thus, an alternative method for more accurately evaluating the frequency‐dependent attenuation characteristics through field distribution in open space with a customized horn antenna is proposed. A relationship between the surface wave attenuation and the propagation distance by analyzing the analytical electric field distribution at different points on the propagation path in the open space is established. Thus, this study provides an improved method for assessing surface wave attenuation characteristics, which contributes to designing surface wave control for wireless communications, wireless power transfer, signal processing, and electromagnetic compatibility.