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The increasing demand for micro‐thermoelectric coolers and generators promotes the research on thermoelectric (TE) thin films. As a promising medium‐temperature TE material, GeTe has attracted wide attention recently. However, the thermoelectric performance of thin‐film GeTe remains inferior. Herein, oriented GeTe films with excessive Ge are obtained by magnetron co‐sputtering technique, which can...
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Exploiting ambipolar electrical conductivity based on graphene field‐effect transistors has raised enormous interest for high‐frequency (HF) analog electronics. Controlling the device polarity, by biasing the graphene transistor around the vertex of the V‐shaped transfer curve, enables to redesign and highly simplify conventional analog circuits, and simultaneously to seek for multifunctionalities,...
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Despite many efforts devoted toward the design of covalent organic frameworks (COFs) at the framework level by selecting the building blocks, their organization in the nano to meso regimes is often neglected. Moreover, the importance of processability for their applications has recently emerged and the synthesis of COF nanostructures without agglomeration is still a challenge. Herein, the first example...
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Writing is an ancient communication technique dating back at least 30 000 years. While even sophisticated contemporary writing techniques hinge on solid surfaces for engraving or the deposition of ink, writing within a liquid medium requires a fundamentally different approach. The study here demonstrates the writing of lines, letters, and complex patterns in water by assembling lines of colloidal...
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The growth of high‐quality halide perovskite single crystals is imperative to study their intrinsic physical properties and to realize high‐performance optoelectronic devices. Here, a room‐temperature solvent evaporation‐induced crystallization (RTSEIC) method is reported based on Le Chatelier's principle, which provides a general strategy to grow halide perovskite single crystals including 3D, 2D,...
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Persistent luminescence nanoparticles (PLNPs) are innovative materials able to emit light for a long time after the end of their excitation. Thanks to this property, their detection can be separated in time from the excitation, making it possible to obtain images with a high signal‐to‐noise ratio. This optical property can be of particular interest for the development of in vitro biosensors. Here,...
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The development of bifunctional catalysts that facilitate both the hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR) in alkaline environment is crucial for realizing unitized regenerative anion‐exchange membrane fuel cells. In this study, a novel strategy to modulate the electron density of MoO3 through Ni doping (sample named NixMo1−xO3) is reported. Ni is incorporated to replace...
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Natural antioxidants are always considered as candidates for the antioxidative therapy of atherosclerosis (AS) due to their good safety profile. However, restricted to their limited reactive oxygen species (ROS) elimination and rapid metabolism, the natural antioxidants’ treatment suffers from the undesirable clinical outcomes. Herein, a new natural antioxidant‐based nanodrug (VC@cLAVs) that can overcome...
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Digital nucleic acid detection based on microfluidics technology can quantify the initial amount of nucleic acid in the sample with low equipment requirements and simple operations, which can be widely used in clinical and in vitro diagnosis. Recently, isothermal amplification technologies such as recombinase polymerase amplification (RPA), loop‐mediated isothermal amplification (LAMP), and clustered...
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Patients with viral myocarditis are at risk of sudden death and may progress to dilated cardiomyopathy (DCM). Currently, no disease‐specific therapies exist to treat viral myocarditis. Here it is examined whether reconstituted, lyophilized extracellular vesicles (EVs) from platelets from healthy men and women reduce acute or chronic myocarditis in male mice. Human‐platelet‐derived EVs (PEV) do not...
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Alzheimer's disease (AD) is a severe neurodegenerative condition characterized by inflammation, beta‐amyloid (Aβ) plaques, and neurodegeneration, which currently lack effective treatments. Chiral nanomaterials have emerged as a promising option for treating neurodegenerative disorders due to their high biocompatibility, strong sustained release ability, and specific enantiomer selectivity. The development...
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The electrode/electrolyte interfaces play an important role in the electrochemical reaction kinetics to alleviate the severe polarization and voltage hysteresis in lithium primary batteries. Herein, C5F5N is proposed as an electrolyte additive to tune the characteristics of the electrode/electrolyte interfaces. The Li/CFx primary battery with C5F5N additive exhibits an excellent discharge‐specific...
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Achieving rapid and effective hemostasis remains a multidisciplinary challenge. Here, distinctive functional carbon dots derived from carbonized Platycladus orientalis (CPO‐CDs) are developed using one‐step hydrothermal method. The negatively charged surface of CPO‐CDs retains partial functional groups from CPO precursor, exhibiting excellent water solubility and high biocompatibility. Both rat liver...
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Water‐induced parasitic reactions and uncontrolled dendritic Zn growth are long‐lasting tricky problems that severely hinder the development of aqueous zinc‐metal batteries. Those notorious issues are closely related to electrolyte configuration and zinc‐ion transport behavior. Herein, through constructing aligned dipoles induced electric‐field on Zn surface, both the solvation structure and transport...
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Fluoro‐substituted aromatic alkylammonium spacer cations are found effective to improve the performance of quasi‐2D perovskite light‐emitting diodes (PeLEDs). The fluorine substitution is generally attributed to the defect passivation, quantum well width control, and energy level adjustments. However, the substituted cations can also affect the crystallization process but is not thoroughly studied...
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Piezocatalysis has increasingly gained prominence due to its enormous potential for addressing energy shortages and environmental pollution issues. Nonetheless, the low piezocatalytic activity of state‐of‐the‐art materials seriously inhibits the practical applications of piezocatalysis. Here, it is proposed to greatly enhance the piezocatalytic activity for a perovskite ferroelectric, i.e., Sm‐doped...
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2D MXene is highly preferred for photothermal energy conversion and microwave absorption. However, the aggregation issue, insufficient dielectric loss capacity, and lack of magnetic loss capacity for MXene severely hinder its practical applications. Herein, the authors propose multi‐dimensional nanostructure engineering to electrostatically assemble 2D MXene and layered double hydroxides (LDH) derived...
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Magnetic iron oxide nanoparticles (MIONs) based T2‐weighted magnetic resonance imaging (MRI) contrast agents (CAs) are liver‐specific with good biocompatibility, but have been withdrawn from the market and replaced with Eovist (Gd‐EOB‐DTPA) due to their inherent limitations (e.g., susceptibility to artifacts, high magnetic moment, dark signals, long processing time of T2 imaging, and long waiting...
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For the past century, trypsin has been the primary method of cell dissociation, largely without any major changes to the process. Enzymatic cell detachment strategies for large‐scale cell culturing processes are popular but can be labor‐intensive, potentially lead to the accumulation of genetic mutations, and produce large quantities of liquid waste. Therefore, engineering surfaces to lower cell adhesion...
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To boost the kinetic process of the oxygen evolution reaction (OER), hybrid CoNiFe/Fe(Fe,Mo,Al)2O4 coatings are deposited on pure Ti substrates (namely, CoNiFe/Fe(Fe,Mo,Al)2O4/Ti electrodes). This new coating features a dense inner layer together with an outer layer of microcone arrays (MCAs). The electrochemical surface area of the electrodes is modulated by controlling the geometrical factors of...
