bluuebunny/crossref_metadata_2025_split huggingface dataset:
Annealing‐Free Thioantimonate Argyrodites with High Li‐Ion Conductivity and Low Elastic Modulus
Authors: Jung Wo Dum , Kim Ji‐Su , Kim Young Jung , Jeong Hyeseong , Han Daseul , Nam Kyung‐Wan , Ahn Docheon , Kwon Deok‐Hwang , Jung Hun‐Gi , Lee Jong‐Ho , Kim Hyoungchul 
Published: December 2022

AbstractAlthough Li‐ion superconducting sulfides have been developed as solid electrolytes (SEs) in all‐solid‐state batteries, their high deformability, which is inherently beneficial for room‐temperature compaction, is overlooked and sacrificed. To solve this dilemmatic task, herein, highly deformable Li‐ion superconductors are reported using an annealing‐free process. The target thioantimonate, Li5.2Si0.2Sb0.8S4Br0.25I1.75, comprising bimetallic tetrahedra and bi‐halogen anions is synthesized by two‐step milling tuned for in situ crystallization, and exhibits excellent Li‐ion conductivity (σion) of 13.23 mS cm−1 (averaged) and a low elastic modulus (E) of 12.51 GPa (averaged). It has a cubic argyrodite phase of ≈57.39% crystallinity with a halogen occupancy of ≈90.67% at the 4c Wyckoff site. These increased halogen occupancy drives the Li‐ion redistribution and the formation of more Li vacancies, thus facilitating Li‐ion transport through inter‐cage pathway. Also, the facile annealing‐free process provides a unique glass‐ceramic structure advantageous for high deformability. These results represent a record‐breaking milestone from the combined viewpoint of σion and E among promising SEs. Electrochemical characterization, including galvanostatic cycling tests for 400 h, reveals that this material displays reasonable electrochemical stability and cell performance (150.82 mAh g−1 at 0.1C). These achievements shed light on the synthesis of practical SEs suffice both σion and E requirements.
Intracellular pH Sensor Based on Heteroleptic Bis‐Cyclometalated Iridium(III) Complex Embedded into Block‐Copolymer Nanospecies: Application in Phosphorescence Lifetime Imaging Microscopy
Authors: Shakirova Julia R. , Baigildin Vadim A. , Solomatina Anastasia I. , Aghakhanpour Reza Babadi , Pavlovskiy Vladimir V. , Porsev Vitaly V. , Tunik Sergey P. 
Published: December 2022

AbstractHerein, a novel pH‐responsive phosphorescent probe based on cyclometalated iridium(III) complex is reported. To prevent oxygen quenching of phosphorescence and to improve the probe biocompatibility, the complex is covalently conjugated with a water‐soluble block‐copolymer that also increases its pH sensitivity. The resulting polymeric nanoprobe demonstrates a strong response of the phosphorescence lifetime onto pH variations in physiological range. Cellular experiments with Chinese hamster ovary (CHO‐K1) cells show the predominant internalization of the probe in acidified cell compartments, endosomes and lysosomes. The analysis of phosphorescence lifetime imaging microscopy data confirms applicability of the sensor for monitoring of intra‐ and extracellular pH in cell cultures.
Oxygen Vacancy‐Mediated Exciton Effect in Hierarchical BiOBr Enables Dichotomy of Energy Transfer and Electron Transfer in Photocatalysis
Authors: Shen Zirong , Luo Zehua , Chen Junying , Li Yingwei 
Published: December 2022

AbstractUsing solar energy through green and simple artificial photosynthesis systems are considered as a promising way to solve the energy and environmental crisis. However, one of the important primary steps of photosynthesis, i.e., energy transfer, is long being ignored especially in inorganic semiconducting systems due to the small exciton binding energies. Herein, the simultaneous interrogation of the charge transfer and energy transfer steps in a photoexcitation process is proposed by utilizing few‐layered nanosheet‐assembled hierarchical BiOBr nanotubes with rich oxygen vacancies (OVs) as efficient multifunctional photocatalysts. Benefiting from the integrated 1D/2D structure and abundant OV defects, the excitonic effect strikes a delicate balance in the optimized BiOBr photocatalyst, showing not only improved charge carrier separation and transfer but also enhanced exciton generation. As a result, the hierarchical BiOBr nanotubes exhibit high efficiency toward photocatalytic CO2 reduction with an impressive CO evolution rate of 135.6 µmol g−1 h−1 without cocatalyst or photosensitizer. The dominant reactive oxygen species of singlet oxygen (1O2) are discriminated for the first time, which originated from an energy transfer process, with electrophilic character, whereas the minor effect of superoxide anion radical (•O2−) with a nucleophilic rate‐determining step in the photocatalytic aerobic oxidation of sulfides.
Reprocessable and Chemically Recyclable Hard Vitrimers Based on Liquid‐Crystalline Epoxides
Authors: Trinh Thi En , Ku Kyosun , Yeo Hyeonuk 
Published: December 2022

AbstractThe rapid increase in demand for recyclable and reusable thermosets has necessitated the development of materials with chemical structures that exhibit these features. Thus, functional mesogenic epoxide monomers bearing both ester and imine groups that can be vitrimerized and recycled are reported herein. The compounds show mesophase characteristics at 100–200 °C and can be converted into hard epoxides by a common curing reaction. The obtained hard epoxides have high isotropic thermal conductivity (≈0.64 W m−1 K−1), which is derived from their highly ordered microstructures. The cured products can be easily reprocessed through imine metathesis and transesterification, and decomposed products can be obtained through imine hydrolysis under acidic or basic conditions and subsequently be re‐cured. Surprisingly, recycled materials can be repeatedly reprocessed or chemically decomposed. The reprocessed materials retain the properties of their pristine counterparts, and the recycled products preserve the advantages of the hard thermosets without alteration to any of their unique properties. A dehydration reaction occurs between the residual hydroxyl groups during the re‐hardening, which dramatically increases the glass transition temperature by ≈60 °C. These reprocessable and recyclable vitrimers demonstrate the effectiveness and environmental friendliness of the molecular design strategy reported herein.
Epoxidation of Electron‐Deficient Alkenes Triggered by Visible‐Light‐Driven Phenol Photooxidation for the Synthesis of Epoxy Dienone Products
Authors: Péault Louis , Rochelle Servane , Planchat Aurélien , Nun Pierrick , Le Grognec Erwan , Coeffard Vincent 
Published: December 2022

AbstractThis article describes a synthesis of epoxy dienone products starting from para‐substituted phenols bearing an electron‐deficient alkene at the meta position. This one‐pot photooxygenation/epoxidation transformation takes place at room temperature using catalytic amounts of Rose Bengal and cesium carbonate upon green light irradiation. This reaction provides access to a range of functionalized epoxy dienone products with diastereoisomeric ratios ranging from 4:1 to >12:1. DFT calculations and mechanistic experiments revealed that this reaction would proceed through singlet oxygen‐mediated photooxidation of phenols followed by an intramolecular oxygen atom transfer on the alkene side arm.magnified image
A Hybrid SARIMA‐LSTM Model for Air Temperature Forecasting
Authors: Li Guoqiang , Yang Ning 
Published: December 2022

AbstractIn order to improve the prediction accuracy of air temperature forecasting, a temperature prediction model based on the hybrid SARIMA (seasonal autoregressive integrated moving average)‐LSTM (long short‐term memory) model is constructed. First, this method decomposes the temperature series into three series of trend, seasonal, and residual through seasonal‐trend decomposition procedure based on Loess decomposition method. It establishes SARIMA to predict the trend and seasonal series and extracts the linear information contained in the time series to the maximum extent. Then, the LSTM model is used to fit the residual series and the hidden nonlinear information is further extracted. Finally, the prediction results of two parts are added in series to obtain the prediction result of the final hybrid model. Three indexes, namely, root mean square error, mean absolute error, and mean absolute percentage error are evaluated to calculate the prediction accuracy about single models including ARIMA, SARIMA, and LSTM and the hybrid models ARIMA‐LSTM and SARIMA‐LSTM. Also the Kupiec index is used to show tail performance. The empirical results show that the SARIMA‐LSTM combination model is more accurate than the single prediction methods and other combination model. Its accuracy increases by 10.0–27.7%.
Scandium Nitride as a Gateway III‐Nitride Semiconductor for both Excitatory and Inhibitory Optoelectronic Artificial Synaptic Devices
Authors: Rao Dheemahi , Pillai Ashalatha Indiradevi Kamalasanan , Garbrecht Magnus , Saha Bivas 
Published: December 2022

AbstractTraditional computation based on von Neumann architecture is limited by time and energy consumption due to data transfer between the storage and the processing units. The von Neumann architecture is also inefficient in solving unstructured, probabilistic, and real‐time problems. To address these challenges, a new brain‐inspired neuromorphic computational architecture is required. Due to the absence of resistance–capacitance delay, high bandwidth, and low power consumption, optoelectronic artificial synaptic devices are highly attractive. Yet, stable, scalable, and complementary metal–oxide–semiconductor (CMOS)‐compatible materials exhibiting both inhibitory and excitatory optoelectronic synaptic functionalities have not been demonstrated. Here, epitaxial CMOS‐compatible scandium nitride (ScN) optoelectronic artificial synaptic devices that emulate both inhibitory and excitatory biological synaptic activities are presented. The negative and positive persistent photoconductivity of undoped and magnesium‐doped ScN is equated to the inhibitory and excitatory synaptic plasticity, respectively, which leads to functionalities like learning–forgetting, frequency‐selective optical filtering, frequency‐dependent potentiation and depression, Hebbian learning, and logic‐gate operations. Temperature‐dependent photoresponse and photo‐Hall measurements reveal that scattering of photogenerated carriers from charged defect centers results in negative photoconductivity in undoped degenerate ScN. This work opens up the possibility of utilizing a group‐III epitaxial semiconducting nitride material with inhibitory and excitatory optoelectronic synaptic functionalities for practical neuromorphic applications.
Fabrication of a Hole‐Type Vertical Resistive‐Switching Random‐Access Array and Intercell Interference Induced by Lateral Charge Spreading
Authors: Kim Seung Soo , Yong Soo Kyeom , Kim Jihun , Choi Jin Myung , Park Tae Won , Kim Hyun Young , Kim Hae Jin , Hwang Cheol Seong 
Published: December 2022

AbstractA hole‐type vertical structure is adopted to fabricate a vertically stacked resistive switching random access memory (ReRAM) array. The vertical configuration is more advantageous in lowering the process cost and increasing integration density than the horizontal configuration. However, the memory cells constituting the hole‐type vertical‐ReRAM (V‐ReRAM) array can be short‐circuited if a middle electrode is introduced to stack a rectifying element onto the memory layer. Thus, a self‐rectifying Pt/Ta2O5/Al‐doped HfO2/TiN ReRAM is adopted in this study to prevent the sneak‐current and short‐circuit issues for efficient operation in vertical crossbar array configuration. A two‐ or three‐layer stacked V‐ReRAM is fabricated, and its electrical characteristics are evaluated. High switching uniformity and sufficiently large memory window and rectification ratio are acquired. The low operation power and high switching uniformity render this V‐ReRAM array suitable for high‐capacity storage devices. However, the on‐state data retention needs improvement. Detailed investigation of the three‐layer stacked device identifies that lateral charge spreading between neighboring cells in the V‐ReRAM causes such a problem, which can be mitigated by increasing the intercell distance.
Printing of Nano‐ to Chip‐Scale Structures for Flexible Hybrid Electronics
Authors: Christou Adamos , Ma Sihang , Zumeit Ayoub , Dahiya Abhishek Singh , Dahiya Ravinder 
Published: December 2022

AbstractFlexible hybrid electronics (FHE) offers potential for fast computation and communication needed in applications such as human–machine interfaces, electronic skin, etc. FHE typically comprises devices that can vary from nano‐ to chip scale, and their integration using a common process is often challenging. Herein, a printed electronics route is presented to integrate the ultrathin chips (chip‐scale) and nanowires (NWs)‐based electronic layers (nanoscale) on the same substrate. The fabrication process is categorized into three stages: i) direct transfer printing of ultrathin chips (UTCs), ii) contact printing of nanoscale structures, and iii) metal printing using the direct ink write (DIW) method to define electrodes/interconnects. The UTC printing process is carefully optimized by studying the performance of transistors present on them. Electrical data collected from 14 transistors located on 3 different chips show negligible variation in performance after they are transfer printed—thus confirming the efficacy of the printing technique. The superior grade quality of ZnO‐NWs‐based electronic layers printed on the same substrate is also demonstrated by constructing UV photodetectors using DIW printing. The photodetectors show high responsivity (≈2 × 107 A W−1) and specific detectivity (≈5 × 1015 Jones) at a low UV intensity of 0.5 µW cm−2.
Molecular Catalyst with Near 100% Selectivity for CO2 Reduction in Acidic Electrolytes
Authors: Jiang Zhan , Zhang Zisheng , Li Huan , Tang Yirong , Yuan Yubo , Zao Jie , Zheng Hongzhi , Liang Yongye 
Published: December 2022

AbstractThe electrocatalytic carbon dioxide reduction reaction (CO2RR) in an acidic medium is conducive to the efficient utilization of CO2 by preventing the formation of carbonate/bicarbonate. However, acidic media are more favorable for the hydrogen evolution reaction (HER), resulting in unsatisfactory CO2RR selectivities. It is demonstrated that the molecularly dispersed electrocatalyst of β‐tetra methoxy‐substituted nickel phthalocyanine on carbon nanotubes (NiPc‐OMe MDE) can efficiently catalyze CO2RR in acidic media (pH 2 to 0.47) with Faradaic efficiencies of CO >98% over a wide range of current densities from −50 to −400 mA cm−2. It is found that the superior selectivity performance can be attributed to the presence of potassium ions, the high preference of CO2RR over HER on the active site, and few side reaction sites. The study illuminates the potential of molecular electrocatalysts for selective and rapid reduction of CO2 in acid media.
Interplay of the Staggered and Three‐Body Interaction Potentials on the Quantum Phases of a Spin‐1 Ultracold Atom in an Optical Lattice
Authors: Nabi Sk Noor 
Published: December 2022

AbstractThe interplay of the staggered and the three‐body interaction potentials on the quantum phases of a spin‐1 Bose Hubbard model using a mean field approximation (MFA) is studied. In the antiferromagnetic (AF) case, a smaller value of the staggered potential (SP) results in the charge and the spin density wave ordering along with the Mott insulator (MI) and the staggered superfluid (SSF) phases. While the competition between two types of the potential leads to the stabilization of the higher order MI and charge density wave (CDW) phases with increasing three‐body interaction strength. Further, the spin eigenvalue and nematic order parameters are calculated to scrutinize the spin singlet‐nematic formation in the MI and the CDW phases and spin population fractions to analyze the nature of the SSF phase. A signature of the spin density wave (SDW) pattern is also observed in the gapped phase lobes. In case of a purely three‐body interaction, the third and higher order insulating lobes become dominant with increasing staggered potential strength. Subsequently, all MFA phase diagrams are then nicely corroborated with the analytical results obtained using a perturbative expansion corresponding to the AF and ferromagnetic cases.
Pure Isotropic Proton NMR Spectra in Solids using Deep Learning
Authors: Cordova Manuel , Moutzouri Pinelopi , Simões de Almeida Bruno , Torodii Daria , Emsley Lyndon 
Published: December 2022

AbstractThe resolution of proton solid‐state NMR spectra is usually limited by broadening arising from dipolar interactions between spins. Magic‐angle spinning alleviates this broadening by inducing coherent averaging. However, even the highest spinning rates experimentally accessible today are not able to completely remove dipolar interactions. Here, we introduce a deep learning approach to determine pure isotropic proton spectra from a two‐dimensional set of magic‐angle spinning spectra acquired at different spinning rates. Applying the model to 8 organic solids yields high‐resolution 1H solid‐state NMR spectra with isotropic linewidths in the 50–400 Hz range.
Fluorogenic Granzyme A Substrates Enable Real‐Time Imaging of Adaptive Immune Cell Activity
Authors: Cheng Zhiming , Thompson Emily J , Mendive‐Tapia Lorena , Scott Jamie I , Benson Sam , Kitamura Takanori , Senan‐Salinas Ana , Samarakoon Youhani , Roberts Edward W , Arias Maykel A , Pardo Julian , Galvez Eva M , Vendrell Marc 
Published: December 2022

AbstractCytotoxic immune cells, including T lymphocytes (CTLs) and natural killer (NK) cells, are essential components of the host response against tumors. CTLs and NK cells secrete granzyme A (GzmA) upon recognition of cancer cells; however, there are very few tools that can detect physiological levels of active GzmA with high spatiotemporal resolution. Herein, we report the rational design of the near‐infrared fluorogenic substrates for human GzmA and mouse GzmA. These activity‐based probes display very high catalytic efficiency and selectivity over other granzymes, as shown in tissue lysates from wild‐type and GzmA knock‐out mice. Furthermore, we demonstrate that the probes can image how adaptive immune cells respond to antigen‐driven recognition of cancer cells in real time.
Tidal deformability of magnetized strange stars
Authors: López Pérez Samantha , Manreza Paret Daryel , Pérez Martínez Aurora 
Published: December 2022

AbstractWe explore the effects of the magnetic field on the gravitational wave signal of a binary system of neutron stars. First, we find the mass–radius relations for strange stars (SSs) and compare them with the theoretical and observational constraints from recent literature. Finally, we calculate the tidal deformability of magnetized SSs and constrain some parameters of our model.
Nudging green food: The effects of a hedonic cue, menu position, a warm‐glow cue, and a descriptive norm
Authors: Reinholdsson Tommy , Hedesström Martin , Ejelöv Emma , Hansla André , Bergquist Magnus , Svenfelt Åsa , Nilsson Andreas 
Published: December 2022

AbstractMeat consumption is associated with both public health risks and substantial CO2 emissions. In a large‐scale field‐experiment, we applied four nudges to the digital menus in 136 hamburger restaurants. The nudges promoted vegetarian food purchases by either (1) changing the menu position of vegetarian food, or aligning vegetarian food with (2) a hedonic, taste‐focused nudge, (3) the warm‐glow effect, or (4) a descriptive social norm. These nudges were thus aimed to shift salience toward a certain goal or the salience of a specific alternative. Vegetarian food purchases were measured in two datasets analyzing if nudges affected customers' “route” to ordering vegetarian food (29,640 observations), and the total number of vegetarian food sold during the intervention (346,081 observations). Results showed that the position nudge affected customers route to buying vegetarian food. More specifically, making the “green category” more accessible made more customers order through that category. Interestingly, this did not affect the total number of vegetarian sales. However, results indicate that nudges that utilize the salience of goals, in particular hedonic goals, may have an overall positive effect on total vegetarian sales.
Controlled Production of Carnosic Acid and Carnosol in Cell Suspensions of Lepechinia meyenii Treated with Different Elicitors and Biosynthetic Precursors
Authors: Villa‐Ruano Nemesio , Hernández‐Silva Néstor , Varela‐Caselis Jenaro Leocadio , Alberto‐Ramirez‐Garcia Sergio , Mosso‐González Clemente 
Published: December 2022

AbstractLepechinia meyenii is a medicinal plant specialized in the biosynthesis of different types of antioxidants including the diterpenes carnosic (CA) acid and carnosol (CS). Herein we present the results of plant tissue culture approaches performed in this medicinal plant with particular emphasis on the generation and evaluation of a cell suspension system for CA and CS production. The effect of sucrose concentration, temperature, pH, and UV‐light exposure was explored. In addition, diverse concentrations of microbial elicitors (salicylic acid, pyocyanin, Glucanex, and chitin), simulators of abiotic elicitors (polyethylene glycol and NaCl), and biosynthetic precursors (mevalonolactone, geranylgeraniol, and miltiradiene/abietatriene) were evaluated on batch cultures for 20 days. Miltiradiene/abietatriene obtainment was achieved through a metabolic engineering approach using a recombinant strain of Saccharomyces cerevisiae. Our results suggested that the maximum accumulation (Accmax) of CA and CS was mainly conferred to stimuli associated with oxidative stress such as UV‐light exposure (Accmax, 6.2 mg L−1) polyethylene glycol (Accmax, 6.5 mg L−1) NaCl (Accmax, 5.9 mg L−1) which simulated drought and saline stress, respectively. Nevertheless the bacterial elicitor pyocyanin was also effective to increase the production of both diterpenes (Accmax, 6.4 mg L−1). Outstandingly, the incorporation of upstream biosynthetic precursors such as geranylgeraniol and miltiradiene/abietatriene, generated the best results with Accmax of 8.6 and 16.7 mg L−1, respectively. Optimized batch cultures containing 100 mg L−1 geranylgeraniol, 50 mg L−1 miltiradiene/abietatriene (95 : 5 %) and 5 g L−1 polyethylene glycol treated with 6 min UV light pulse during 30 days resulted in Accmax of 26.7 mg L−1 for CA and 17.3 mg L−1 for CS on days 18–24. This strategy allowed to increase seven folds the amounts of CA and CS in comparison with batch cultures without elicitation (Accmax, 4.3 mg L−1).
Electrochemically Generated Luminescence of Luminol and Luciferin in Ionic Liquids
Authors: Belotti Mattia , El‐Tahawy Mohsen M. T. , Darwish Nadim , Garavelli Marco , Ciampi Simone 
Published: December 2022

AbstractElectrochemiluminescence (ECL) is the generation of light triggered by an electrochemical reaction. ECL has been extensively studied in solvent‐based electrolytes, but there is a lack of data on using electrode reactions to populate an excited‐state light emitter in room temperature ionic liquids (RTILs). This work explores the current response, light intensity (photon counting), and spectral signatures of the cathodic ECL of luminol and firefly's luciferin in imidazolium‐based RTILs. We have demonstrated that the cathodic (superoxide‐triggered) ECL of both luminol and adenylate‐ester of firefly's luciferin is viable in RTILs, explored the effect of water contaminations, and importantly, shown that the ECL signal persists for up to about 700 s after the removal of the external cathodic pulse, which is probably due to the stabilization of superoxide by double‐layer cation‐rich structures. Long‐lived RTIL double‐layer structures and their endogenous fields are detected as stable and discrete open‐circuit potential plateaus.