bluuebunny/crossref_metadata_2025_split huggingface dataset:
Healthcare workers' memories in the COVID‐19 pandemic: The role of visual perspective and event centrality in subjective temporal distance
Authors: Bilgin Ezgi , Öner Sezin 
Published: July 2024

AbstractWe investigated the factors associated with subjective temporal distance of pandemic‐related events in a sample of healthcare workers. A total of 257 healthcare workers were asked to recall two COVID‐19 pandemic‐related events that impacted them the most at the beginning of the pandemic (April–May 2020), and rated event centrality, phenomenological characteristics, subjective temporal distance, and visual perspective (field vs. observer) for each reported event. Results showed a negative relationship between subjective temporal distance and event centrality only for memories remembered from the field perspective (field memories), but not those remembered from the observer perspective (observer memories). Furthermore, event centrality enhanced recollection of sensory and perceptual details, which, in turn, resulted in memories being felt temporally closer to people. However, only field memories, not observer memories, revealed this pattern, showing that recollective experience shaped by visual perspective mediates the relationship between event centrality and subjective temporal distance.
Polaritons in Photonic Hypercrystals of van der Waals Materials
Authors: Sahoo Nihar Ranjan , Kumar Brijesh , Prasath S.S. Jatin , Dixit Saurabh , Kumar Rohit , Bapat Aneesh , Sharma Parul , Caldwell Joshua D. , Kumar Anshuman 
Published: July 2024

AbstractIn‐plane Hyperbolic Phonon polaritons (HPhPs) are quasiparticles formed via coupling of photons and optical phonons in in‐plane hyperbolic materials and offer unique applications in sensing, thermal emitters and high‐resolution imaging. However, the large momentum mismatch between photons and these in‐plane HPhPs has restricted their technological potential as most experimental demonstrations rely on sophisticated and expensive near‐field detection schemes. In this work, using the example of α‐MoO3, it is demonstrated that by constructing photonic hypercrystals of this material, one can not only excite these in‐plane HPhPs in the far field but also tune the far field response via twisting the hypercrystal lattice with respect the lattice of α‐MoO3. The findings will pave the way for the development of practical in‐plane HPhP devices as well as provide access to new fundamental physics of such materials via conventional and well developed far‐field measurement techniques.
Engineering Metal Electron Spin Polarization to Regulate p‐Band Center of Se for Enhanced Sodium‐Ion Storage
Authors: Wang Dandan , Chao Yunfeng , Guo Kaiyang , Wang Zhuosen , Yang Mingxing , Zhu Jianhua , Cui Xinwei , Xu Qun 
Published: July 2024

AbstractSluggish ion diffusion of large sodium ions is one of the main drawbacks challenging the development of metal selenides‐based anode materials for sodium‐ion batteries (SIBs). A spin‐state regulating strategy is first proposed in this work to lift the p‐band center (ɛp) of Se for a fast Na+ transfer kinetic in (Co,Cu)Se2. By utilizing the electron transfer from Cu to Co, the π‐symmetry t2g of Co is fully occupied to decrease the spin polarization. The resultant electron repulsion between Co and Se weakens Co–Se bond to lift the ɛp of Se. The enhanced sodium adsorption energy effectively accelerates the ion transfer at the active material–electrolyte interface. As a result, the (Co,Cu)Se2/NC electrode exhibits an superior sodium storage performance with a capacity of 445 mAh g−1 at 0.2 A g−1, 312 mAh g−1 at 50 A g−1, and 363 mAh g−1 after 10 000 cycles at 10.0 A g−1. The insight into the working mechanism of regulating spin‐state of metals to lift the p‐band center of Se can provide guidelines for the development of both metal selenides‐based anode material and high‐performance SIBs.
Sensory Nervous System‐Inspired Self‐Classifying, Decoupled, Multifunctional Sensor with Resistive‐Capacitive Operation Using Silver Nanomaterials
Authors: Yang Yoonji , Jung Byung Ku , Park Taesung , Ahn Junhyuk , Choi Young Kyun , Oh Seongkeun , Lee Yong Min , Choi Hyung Jin , Seo Hanseok , Oh Soong Ju 
Published: July 2024

AbstractSelf‐classification technology has remarkable potential for autonomously discerning various stimuli without any circuit or software assistance, enabling it to realize electronic skin. In conventional self‐classification systems that rely on complex circuitry for operation, integrating the sensing and algorithm processing units inevitably leads to bulkiness in devices and bottlenecks in signal processing. In this study, the novel double‐sided structure inspired by the human nervous system is newly designed for a self‐classifying sensor (SCS) without the need for additional circuits. The sensor is layered with Ag nanocomposites that have been mechanically enhanced via interface engineering and surface treatment techniques. This structure enables the resistance‐capacitance hybrid operation, facilitating the detection and distinguishment of changes in strain, pressure, and temperature within a single device, which mimics the human sensing recognition process. Moreover, the intensity of the applied stimuli is determined by analyzing the detected signal, and precise localization of the stimuli is achieved by arraying the sensors. With its self‐classification capabilities, SCS opens promising avenues for applications in soft robotics and advanced multifunctional sensor platforms, providing a sensing system characterized by simplicity and efficiency.
Anchoring Solvent Molecules onto Polymer Chains Through Dynamic Interactions for a Wide Temperature Range Adaptable and Ultra‐Fast Responsive Adhesive Organogels
Authors: Zheng Xiuwen , Zhou Xiangfu , Yang Yaolong , Xiong Wenjie , Ye Shuling , Xu Yiting , Zeng Birong , Yuan Conghui , Dai Lizong 
Published: July 2024

AbstractOrganogels are less explored toward on‐sink flexible and stretchable electronics compared to hydrogels, due to the challenges in simultaneously achieving biocompability, satisfactory mechanical properties, environmental‐adaptive adhesion capability, and fast stimuli‐response. Herein, it is shown that a boronate ester polymer organogel with dynamic covalent and hydrogen bonds formed between the polymer networks and organic solvents meets all the above requirements. This is achieved through the gelation of a polymer bearing with boronic acid, imidazolium salt, and amide groups (named QBAM) in ethylene glycol (EG). The strong interactions between the polymer chains and the EG not only improve the toughness of QBAMs, but also inhibit the volatilization of EG, leading to a wide temperature (−10 to 190 °C) adaptability. Due to the abundant hydrogen bonds and electrostatic interaction, QBAM organogels are highly adhesive to a variety of substrates. The presence of imidazolium salt endows QBAM organogels with promising ionic conductivity. Strain sensors fabricated with QBAM organogels fit well on human skin and exhibit the advantages of high strain sensitivity (GF = 9.049), fast response (≈60.4 ms), good cyclic stability, and broaden temperature adaptability. This work opens up a new avenue for the design of multifunctional and biocompatible organogels for on‐skin devices.
New Understanding toward Lithium Morphologic Evolution in Lithium Metal Batteries
Authors: Wang Chun , Wu Xuyang , Yuan Wei , Zhang Xiaoqing , Jiang Simin , Zhao Bote , Chen Yu , Zhang Guanhua , Zeng Yubin , Liu Qing , Gu Furui , Tang Yong , Xie Yingxi 
Published: July 2024

AbstractThe generation of dendrites is a common issue of lithium metal battery, while the failure mechanism is still uncovered especially at low current densities/capacities. To better understand the mechanical factors caused by lithium morphologic evolution in the whole dynamic process of a cycle, this study proposes a failure mechanism of the lithium metal anode under a safe condition of rather low current density/capacity. The anode and the electrolyte fail to maintain effective contact throughout the dynamic cycling process due to the accumulation and extrusion of lithium deposits. To guarantee effective contact, a facile and low‐cost mechanical stamping method for lithium metal anode modification is accordingly presented. The curved lithium electrode can stably cycle for more than 300 cycles at 3 mA cm−2. This study is believed to provide a more in‐depth understanding toward the evolvement of lithium morphology to boost practical use of the lithium metal anodes.
Achieving High Performance of Triboelectric Nanogenerators via Voltage Boosting Strategy
Authors: Wang Qianwang , Hu Dongyang , Huang Xiaolong , Yuan Zitang , Zhong Lipeng , Sun Qiuqin , Wang Feng , Xu Sixing , Chen She 
Published: July 2024

AbstractTriboelectric nanogenerator (TENG) has received significant attention as an energy harvesting technology capable of converting mechanical energy from the environment into electrical power. However, due to its inherent high impedance and low charge transfer output characteristics, the output of TENG is often relatively small. Current research typically focuses on switching on and off under intrinsic voltage for performance management. To further improve output performance, an energy management strategy is proposed that aimed at voltage boosting in this study. This strategy ingeniously designs the discharge sequence of two discharge switches to adjust the connection between the intrinsic capacitor and the matched capacitor, thereby facilitating instantaneous charge transfer under voltages surpassing the intrinsic voltage and significantly enhancing the power density. Combining this strategy with a power converter has significantly enhanced the energy storage efficiency of capacitors, thereby enabling improved power supply for sensor devices. Moreover, experimental results show a power density of 324.8 kW m−2, indicating a 100% increase compared to the direct discharge strategy. With such high output power, five parallel 10‐watt commercial lamps can be illuminated. This strategy introduces a novel idea for achieving high performance output from TENG.
Sustainable Spinning of Artificial Spider Silk Fibers with Excellent Toughness and Inherent Potential for Functionalization
Authors: Fan Ruxia , Knuuttila Katarina , Schmuck Benjamin , Greco Gabriele , Rising Anna , Linder Markus B. , Aranko A. Sesilja 
Published: July 2024

AbstractDespite impressive progress in the field, there are still several major bottlenecks in producing fibers from recombinantly produced spider‐silk‐like proteins to replicate the extraordinary mechanical properties of spider major ampullate silk. The conventional artificial fiber spinning processes rely primarily on organic solvents to coagulate proteins into fibers and require complex post‐treatments to obtain fibers with valuable properties. This is due to challenges in obtaining soluble silk proteins, but also because the native silk spinning process leading to the hierarchical organization of the silk proteins is not fully understood and is hard to replicate in a manner applicable to industrial settings. Here, recombinant spider‐silk fusion proteins are efficiently produced and processed into as‐spun fibers with a toughness modulus of 120 MJ m−3 and extensibility of 255% using solely aqueous solutions. The spider‐silk fusion proteins assemble in a manner similar to that reported for native spider silk: they phase separate induced by salting out, followed by alignment and a secondary structure transition triggered by shear forces and dehydration. Finally, the design of the fusion silk proteins enables straightforward functionalization of the fibers under mild all‐aqueous conditions via a simple biomolecular click reaction both pre‐ and post‐spinning.
Liquid‐Like Surfaces with Enhanced De‐Wettability and Durability: From Structural Designs to Potential Applications
Authors: Cheng Xiaopeng , Zhao Ran , Wang Shutao , Meng Jingxin 
Published: July 2024

AbstractLiquid‐like surfaces (LLSs) with dynamic repellency toward various pollutants (e.g., bacteria, oil, and ice), have shown enormous potential in the fields of biology, environment, and energy. However, most of the reported LLSs cannot meet the demands for practical applications, particularly in terms of de‐wettability and durability. To solve these problems, considerable progress has been made in enhancing the de‐wettability and durability of LLSs in complex environments. Therefore, this review mainly focuses on the recent progress in LLSs, encompassing designed structures and repellent capabilities, as well as their diverse applications, offering greater insights for the targeted design of desired LLSs. First, a detailed overview of the development of LLSs from the perspective of their molecular structural evolution is provided. Then highlight recent approaches for enhancing the dynamic de‐wettability and durability of LLSs by optimizing their structural designs, including linear, looped, crosslinked, and hybrid structures. Later, the diverse applications and unique advantages of recently developed LLSs, including repellency (e.g., liquid anti‐adhesion/transportation/condensation, anti‐icing/scaling/waxing, and biofouling repellency) are summarized. Finally, Perspectives on potential innovative advancements and the promotion of technology selection to advance this exciting field are offered.
An Integrated Optogenetic and Bioelectronic Platform for Regulating Cardiomyocyte Function
Authors: Bolonduro Olurotimi A. , Chen Zijing , Fucetola Corey P. , Lai Yan‐Ru , Cote Megan , Kajola Rofiat O. , Rao Akshita A. , Liu Haitao , Tzanakakis Emmanuel S. , Timko Brian P. 
Published: July 2024

AbstractBioelectronic medicine is emerging as a powerful approach for restoring lost endogenous functions and addressing life‐altering maladies such as cardiac disorders. Systems that incorporate both modulation of cellular function and recording capabilities can enhance the utility of these approaches and their customization to the needs of each patient. Here we report an integrated optogenetic and bioelectronic platform for stable and long‐term stimulation and monitoring of cardiomyocyte function in vitro. Optical inputs are achieved through the expression of a photoactivatable adenylyl cyclase, that when irradiated with blue light causes a dose‐dependent and time‐limited increase in the secondary messenger cyclic adenosine monophosphate with subsequent rise in autonomous cardiomyocyte beating rate. Bioelectronic readouts are obtained through a multi‐electrode array that measures real‐time electrophysiological responses at 32 spatially‐distinct locations. Irradiation at 27 µW mm−2 results in a 14% elevation of the beating rate within 20–25 min, which remains stable for at least 2 h. The beating rate can be cycled through “on” and “off” light states, and its magnitude is a monotonic function of irradiation intensity. The integrated platform can be extended to stretchable and flexible substrates, and can open new avenues in bioelectronic medicine, including closed‐loop systems for cardiac regulation and intervention, for example, in the context of arrythmias.
SHISA3 Reprograms Tumor‐Associated Macrophages Toward an Antitumoral Phenotype and Enhances Cancer Immunotherapy
Authors: Zhang Shimeng , Yu Bingbing , Sheng Chunjie , Yao Chen , Liu Yang , Wang Jing , Zeng Qi , Mao Yizhi , Bei Jinxin , Zhu Bin , Chen Shuai 
Published: July 2024

AbstractThe main challenge for immune checkpoint blockade (ICB) therapy lies in immunosuppressive tumor microenvironment (TME). Repolarizing M2‐like tumor‐associated macrophages (TAMs) into inflammatory M1 phenotype is a promising strategy for cancer immunotherapy. Here, this study shows that the tumor suppressive protein SHISA3 regulates the antitumor functions of TAMs. Local delivery of mRNA encoding Shisa3 enables cancer immunotherapy by reprogramming TAMs toward an antitumoral phenotype, thus enhancing the efficacy of programmed cell death 1 (PD‐1) antibody. Enforced expression of Shisa3 in TAMs increases their phagocytosis and antigen presentation abilities and promotes CD8+ T cell‐mediated antitumor immunity. The expression of SHISA3 is induced by damage/pathogen‐associated molecular patterns (DAMPs/PAMPs) in macrophages via nuclear factor‐κB (NF‐κB) transcription factors. Reciprocally, SHISA3 forms a complex with heat shock protein family A member 8 (HSPA8) to activate NF‐κB signaling thus maintaining M1 polarization of macrophages. Knockout Shisa3 largely abolishes the antitumor efficacy of combination immunotherapy with Toll‐like receptor 4 (TLR4) agonist monophosphoryl lipid A (MPLA) and PD‐1 antibody. It further found that higher expression of SHISA3 in antitumoral TAMs is associated with better overall survival in lung cancer patients. Taken together, the findings describe the role of SHISA3 in reprogramming TAMs that ameliorate cancer immunotherapy.
Lichtinduzierter Elektronentransfer in einer [NiFe]‐Hydrogenase: Eine Photochemische Abkürzung für die Katalytische Wasserstoffspaltung
Authors: Karafoulidi‐Retsou Chara , Lorent Christian , Katz Sagie , Rippers Yvonne , Matsuura Hiroaki , Higuchi Yoshiki , Zebger Ingo , Horch Marius 
Published: July 2024

Abstract[NiFe]‐Hydrogenasen katalysieren die reversible Spaltung von molekularem Wasserstoff in Protonen und Elektronen. Hier untersuchen wir mittels IR‐ und EPR‐Spektroskopie den Einfluß von Temperatur und Licht auf eine sauerstofftolerante und thermostabile [NiFe]‐Hydrogenase. Dabei haben wir festgestellt, dass sich das Gleichgewicht zwischen zwei katalytischen [NiFe]‐Zuständen, Nia‐C und Nia‐SR′′, als Funktion der Temperatur drastisch ändert. Dies deutet auf einen thermischen Austausch von Elektronen zwischen dem aktiven [NiFe]‐Zentrum und den Eisen‐Schwefel‐Clustern des Enzyms hin. Darüber hinaus zeigten in situ IR‐ und EPR‐Experimente während eines Belichtungsexperiments eine ungewöhnliche photochemische Reaktion des Enzyms. Das vollständig reduzierte katalytische Hydrid‐Intermediat Nia‐SR′′ wandelt sich lichtinduziert reversibel in den katalytischen Nia‐L Zustand um. Im Gegensatz zur bekannten Photolyse des stärker oxidierten Hydrid‐Intermediates Nia‐C handelt es sich bei der Photokonversion von Nia‐SR′′ zu Nia‐L um eine Redoxreaktion am aktiven Zentrum, die einen lichtinduzierten Elektronentransfer zu den Eisen‐Schwefel‐Clustern des Enzyms beinhaltet. Durch das Auslassen des Nia‐C Intermediates stellt dieser direkte Reaktionsweg eine potenzielle photochemisch induzierte Abkürzung des katalytischen Zyklus dar, in die mehrere Redoxzentren des Enzyms involviert sind. Insgesamt deuten unsere Ergebnisse auf eine Umverteilung von Elektronen über thermische und photochemische Reaktionskanäle in diesem Enzym hin und zeigen die Möglichkeit auf, die Katalyse von [NiFe]‐Hydrogenasen durch Licht zu beschleunigen oder zu kontrollieren.
Customizing Aniline‐Derived Molecular Structures to Attain beyond 22 % Efficient Inorganic Perovskite Solar Cells
Authors: Li Rui , Zhang Shiang , Zhang Hao , Wang Zhiteng , Feng Xiaolong , Du Yachao , Zhou Tianxiang , Chen Xin , Liu Pengchi , Liu Lei , Zhang Junqi , Chen Qiyong , Xi Lili , Zhao Kui , Liu Shengzhong (Frank) , Tian Qingwen 
Published: July 2024

AbstractThe characteristics of the soft component and the ionic‐electronic nature in all‐inorganic CsPbI3‐xBrx perovskite typically lead to a significant number of halide vacancy defects and ions migration, resulting in a reduction in both photovoltaic efficiency and stability. Herein, we present a tailored approach in which both anion‐fixation and undercoordinated‐Pb passivation are achieved in situ during crystallization by employing a molecule derived from aniline, specifically 2‐methoxy‐5‐trifluoromethylaniline (MFA), to address the above challenges. The incorporation of MFA into the perovskite film results in a pronounced inhibition of ion migration, a significant reduction in trap density, an enhancement in grain size, an extension of charge carrier lifetime, and a more favorable alignment of energy levels. These advantageous characteristics contribute to achieving a champion power conversion efficiency (PCE) of 22.14 % for the MFA‐based CsPbI3‐xBrx perovskite solar cells (PSCs), representing the highest efficiency reported thus far for this type of inorganic metal halide perovskite solar cells, to the best of our knowledge. Moreover, the resultant PSCs exhibits higher environmental stability and photostability. This strategy is anticipated to offer significant advantages for large‐area fabrication, particularly in terms of simplicity.
Room‐Temperature Ripening Enabled by Hygroscopic Salts for Hole‐conductor‐Free Printable Perovskite Solar Cells with Efficiency Over 20 %
Authors: Zheng Ziwei , Chen Long , Li Daiyu , Ma Yongming , Xia Minghao , Cheng Yanjie , Wang Chaoyang , Xie Jiayu , Wang Xiaoru , Zhang Guodong , Zhou Yang , Mei Anyi , Han Hongwei 
Published: July 2024

AbstractSolution‐processed perovskite films generally possess small grain sizes and high density of grain boundaries, which intensify non‐radiative recombination of carriers and limit the power conversion efficiency (PCE) of solar cells. In this study, we report the room‐temperature ripening enabled by the synergy of hygroscopic salts and moisture in air for efficient hole‐conductor‐free printable mesoscopic perovskite solar cells (p‐MPSCs). Treating perovskite films with proper hygroscopic salts in damp air induces obvious secondary recrystallization, which coarsens the grains size from hundreds of nanometers to several micrometers. It's proposed that the hygroscopic salt at grain boundaries could absorb moisture and form a complex which could not only serve as mass transfer channel but also assist in the dissolution of perovskite grains. This activates mass transfer between small grains and large grains since they possess different solubilities, and thus ripens the perovskite film. Consequently, p‐MPSCs treated with the hygroscopic salt of NH4SCN show an improved power conversion efficiency of 20.13 % from 17.94 %, and maintain >98 % of the initial efficiency under maximum power point tracking at 55±5 °C for 350 hours.
A Macrocyclic Hybrid PET/MRI Probe for Quantitative Perfusion Imaging In Vivo
Authors: Kretschmer Jan , Chiaffarelli Remy , Vuozzo Marta , Cotton Jonathan , Blahut Jan , Ráliš Jan , Dračínský Martin , Matějková Stanislava , Seeling Ulrike , Schmid Andreas M. , Martins André F. , Polasek Miloslav 
Published: July 2024

AbstractPerfusion dynamics play a vital role in delivering essential nutrients and oxygen to tissues while removing metabolic waste products. Imaging techniques such as magnetic resonance imaging (MRI), computed tomography (CT), and positron emission tomography (PET) use contrast agents to visualize perfusion and clearance patterns; however, each technique has specific limitations. Hybrid PET/MRI combines the quantitative power and sensitivity of PET with the high functional and anatomical detail of MRI and holds great promise for precision in molecular imaging. However, the development of dual PET/MRI probes has been hampered by challenging synthesis and radiolabeling. Here, we present a novel PET/MRI probe, [18F][Gd(FL1)], which exhibits excellent stability comparable to macrocyclic MRI contrast agents used in clinical practice. The unique molecular design of [18F][Gd(FL1)] allows selective and expeditious radiolabeling of the gadolinium chelate in the final synthetic step. Leveraging the strengths of MRI and PET signals, the probe enables quantitative in vivo mapping of perfusion and excretion dynamics through an innovative voxel‐based analysis. The diagnostic capabilities of [18F][Gd(FL1)] were demonstrated in a pilot study on healthy mice, successfully detecting early cases of unilateral renal dysfunction, a condition that is typically challenging to diagnose. This study introduces a new approach for PET/MRI and emphasizes a streamlined probe design for practical synthesis and improved diagnostic accuracy.