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All‐Solution‐Processed Light‐Emitting Diodes
In article number 2206582, Hilmi Volkan Demir and co‐workers propose all solution‐processed light‐emitting diodes (LEDs) of all face‐down oriented self‐assembled monolayer (SAM) films of colloidal quantum wells (CQWs) and demonstrate them with a high external quantum efficiency of 18.1% and a maximum brightness of 19,800 cd m−2. Here the SAM‐CQWs films...
Metal–Organic Frameworks
Mg‐Gallate metal–organic framework (MOF) has large hysteresis in its CO2 desorption isotherm, hindering efficient regeneration in adsorption swing processes. Utilizing combined induction heating and vacuum desorption under mild, energy‐efficient conditions boost regeneration performance. A hybrid ferromagnetic Mg‐Gallate extrudate material gets heated up rapidly via magnetic...
Emulsion Polymerization
In article number 2207199, Frederik R. Wurm, Xosé Luís Deán‐Ben, Olga Koshkina, and co‐workers develop biobased nano‐ and microcapsules capable of encapsulating indocyanine green (ICG) for advanced optoacoustic imaging. By utilizing inverse (mini)emulsion, ICG is successfully enclosed within the capsules. Nanocapsules enhance the optoacoustic signal in brain imaging, while...
High‐Performance Zinc–Sulfur Batteries
High‐performance Zn‐S battery is achieved by employing a hybrid electrolyte using low‐cost protic solvent (ethylene glycol) as the co‐solvent in water. The designed hybrid electrolyte can regulate water activity and suppress sulfur side reactions in aqueous electrolytes, forming an in‐situ solid state inter‐phase (SEI) layer on the Zn anode to facilitate reversible...
Biohybrid Systems
In article number 2205768, Jizhou Song, Ping Wang, Liujing Zhuang, and co‐workers present a biohybrid olfactory system by integrating living mammals with flexible neural interface. Chronic in vivo electrophysiological recordings of the peripheral and central olfactory system can be achieved, including single unit activity and local field potential, which provides a new approach for...
Electrochemical Encapsulation
The formation of RuO2 chainmail on the surface of Ru clusters by electrochemical oxidation to protect the Ru metal core induces a strain effect at the contact interface, while synergistic metal‐support interactions improve electron transport at the Ru/VS2 interface, resulting in efficient electrocatalytic activity and durability. More details can be found in article number...
Submerged Cells
The formation of a liquid meniscus in submerged cell cultures is common, but its impact on in vitro particle dosimetry has been overlooked. In article number 2206903, through experiments and mathematical modeling, Sandor Balog, Alke Petri‐Fink, and co‐workers identify key factors influencing nanoparticle dose and observe a significant gradient formation between the center and the wall...
The long‐range ordering of bulk‐heterojunctions (BHJs) significantly facilitates exciton diffusion and dissociation as well as charge transport. A feasible bio‐inspired strategy to realize such a heterostructure is crystallization in gel media where the growing host crystals incorporate the surrounding guest materials of gel networks. Until now, the host–guest pairs forming ordered BHJs are still...
Pressure‐stabilized high‐entropy sulfide (FeCoNiCuRu)S2 (HES) is proposed as an anode material for fast and long‐term stable lithium/sodium storage performance (over 85% retention after 15 000 cycles @10 A g−1). Its superior electrochemical performance is strongly related to the increased electrical conductivity and slow diffusion characteristics of entropy‐stabilized HES. The reversible conversion...
Surface‐Enhanced Raman Scattering
Placing a mirror metal underneath the near‐field‐generating optical hotspots with a controlled vertical gap distance, as well as engineered materials, could control the loss/gain of the overall surface‐enhanced Raman scattering (SERS) effect. Article number 2207003 by Inhee Choi, Yong‐Sang Ryu, and co‐workers offers the clue for understanding roles of outer‐medium...
Spin Droplets
In article number 2300158, Jing Liu and co‐workers report the phenomenon of liquid metal droplet spin on ice induced by a spontaneous dual solid‐liquid phase transition, just like dancing on ice. The droplet motion is lubricated by a thin water film and driven by the escaping bubbles as the ice melts. Such spin effect is disclosed to be universal for different objects including liquid...
Slow charge kinetics and unfavorable CO2 adsorption/activation strongly inhibit CO2 photoreduction. In this study, a strain‐engineered Cs3Bi2Br9/hierarchically porous BiVO4 (s‐CBB/HP‐BVO) heterojunction with improved charge separation and tailored CO2 adsorption/activation capability is developed. Density functional theory calculations suggest that the presence of tensile strain in Cs3Bi2Br9 can significantly...
Cu2SnS3 is a promising thermoelectric candidate for power generation at medium temperature due to its low‐cost and environmental‐benign features. However, the high electrical resistivity due to low hole concentration severely restricts its final thermoelectric performance. Here, analog alloying with CuInSe2 is first adopted to optimize the electrical resistivity by promoting the formation of Sn vacancies...
Despite the unprecedented progress in lead‐based perovskite solar cells (PSCs), the toxicity and leakage of lead from degraded PSCs triggered by deep‐level defects and poor crystallization quality increase environmental risk and become a critical challenge for eco‐friendly PSCs. Here, a novel 2D polyoxometalate (POM)‐based metal–organic framework (MOF) (C5NH5)4(C3N2H5)2Zn3(H8P4Mo6O31)2·2H2O (POMOF)...
A major challenge in Cyclic Swing Separation using flexible adsorbents that have high equilibrium CO2 adsorption capacity is their very low‐pressure hysteresis that hinders efficient desorption. Mg‐Gallate MOF is such a flexible adsorbent that only begins to release CO2 at its pore closing pressure at 0.08 bar and 30 °C, showing very slow and inefficient desorption in pressure or temperature swing...
The practical applications of aqueous zinc ion batteries are hindered by the formation of dendrites on the anode, the narrow electrochemical window of electrolyte, and the instability of the cathode. To address all these challenges simultaneously, a multi‐functional electrolyte additive of 1‐phenylethylamine hydrochloride (PEA) is developed for aqueous zinc ion batteries based on polyaniline (PANI)...
Ion irradiation with light ions is an appealing way to finely tune the magnetic properties of thin magnetic films and in particular the perpendicular magnetic anisotropy (PMA). In this work, the effect of He+ irradiation on the magnetization reversal and on the domain wall dynamics of Pt/Co/AlOx trilayers is illustrated. Fluences up to 1.5 × 1015 ions cm−2 strongly decrease the PMA, without affecting...
Endogenous electric field is ubiquitous in a multitude of important living activities such as bone repair, cell signal transduction, and nerve regeneration, signifying that regulating the electric field in organisms is highly beneficial to maintain organism health. As an emerging and promising research direction, piezoelectric nanomedicine and materdicine precisely activated by ultrasound with synergetic...
Radiative cooling shows great promise in eco‐friendly space cooling due to its zero‐energy consumption. For subambient cooling in hot humid subtropical/tropical climates, achieving ultrahigh solar reflectance (≥96%), durable ultraviolet (UV) resistance, and surface superhydrophobicity simultaneously is critical, which, however, is challenging for most state‐of‐the‐art scalable polymer‐based coolers...
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