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Efficient bifunctional hydrogen electrocatalysis, encompassing both hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR), is of paramount significance in advancing hydrogen‐based societies. While non‐precious‐metal‐based catalysts, particularly those based on nickel (Ni), are essential for alkaline HER/HOR, their intrinsic catalytic activity often falls short of expectations. Herein,...
Nanoparticles form long‐range micropatterns via self‐assembly or directed self‐assembly with superior mechanical, electrical, optical, magnetic, chemical, and other functional properties for broad applications, such as structural supports, thermal exchangers, optoelectronics, microelectronics, and robotics. The precisely defined particle assembly at the nanoscale with simultaneously scalable patterning...
Robust, ultrathin, and environmental‐friendliness papers that synergize high‐efficiency electromagnetic interference (EMI) shielding, personal thermal management, and wearable heaters are essential for next‐generation smart wearable devices. Herein, MXene nanocomposite paper with a nacre‐like structure for EMI shielding and electrothermal/photothermal conversion is fabricated by vacuum filtration...
The tumor microenvironment typically possesses immunosuppressive properties that hinder the effectiveness of antitumor immune responses, even in the context of immunotherapies. However, it is observed that pathogenic microorganisms can trigger strong immune responses during infection, offering a potential means to counteract the immunosuppressive environment of tumors. In this study, a protein nanocage...
Carbon Atomic Steps
At the graphene step edge, the armchair (AC) structure gives only a minor topographic effect on friction, while the zigzag (ZZ) structure induces friction two orders of magnitude larger than the basal friction. The high‐friction ZZ edge becomes superlubricious through reconstructing to the (5,7) azulene‐like structure upon thermal annealing in an inert gas environment. More details...
Two‐dimensional (2D) lamellar materials are normally capable of rendering super‐low friction, wear protection, and adhesion reduction in nanoscale due to their ultralow shear strength between two basal plane surfaces. However, high friction at step edges prevents the 2D materials from achieving super‐low friction in macroscale applications and eventually leads to failure of lubrication performance...
Water electrolysis is an ideal method for industrial green hydrogen production. However, due to increasing scarcity of freshwater, it is inevitable to develop advanced catalysts for electrolyzing seawater especially at large current density. This work reports a unique Ru nanocrystal coupled amorphous‐crystal Ni(Fe)P2 nanosheet bifunctional catalyst (Ru‐Ni(Fe)P2/NF), caused by partial substitution...
Hafnium‐Based Nanomaterials
The clinical translation of hafnium oxide for cancer radiotherapy has aroused extensive interest on Hf‐based nanomaterials for biomedical application. In article number 2300341, Gan Tian, Wenyan Yin, and co‐workers comprehensively summarize the recent advances in synthesis, computed tomography (CT)‐involved diagnosis and radiotherapy‐related synergistic cancer therapy of...
With the rapid development of nanotechnology and nanomedicine, there are great interests in employing nanomaterials to improve the efficiency of disease diagnosis and treatment. The clinical translation of hafnium oxide (HfO2), commercially namedas NBTXR3, as a new kind of nanoradiosensitizer for radiotherapy (RT) of cancers has aroused extensive interest in researches on Hf‐based nanomaterials for...
Versatile electrocatalysis at higher current densities for natural seawater splitting to produce hydrogen demands active and robust catalysts to overcome the severe chloride corrosion, competing chlorine evolution, and catalyst poisoning. Hereto, the core‐shell‐structured heterostructures composed of amorphous NiFe hydroxide layer capped Ni3S2 nanopyramids which are directly grown on nickel foam skeleton...
Heterogeneous electrocatalysis typically depends on the surface electronic states of active sites. Modulating the surface charge state of an electrocatalysts can be employed to improve performance. Among all the investigated materials, nickel (Ni)‐based catalysts are the only non‐noble‐metal‐based alternatives for both hydrogen oxidation and evolution reactions (HOR and HER) in alkaline electrolyte,...
Previous programmable metasurfaces integrated with diodes or varactors require external instructions for field programmable gate arrays (FPGAs), which usually rely on computer‐inputs or pre‐loaded algorithms. But the complicated external devices make the coding regulation process of the programmable metasurfaces cumbersome and difficult to use. To simplify the process and provide a new interaction...
Electromagnetic Manipulation and Encryption
To simplify the process and provide a new interaction manner, Lei Chen, Tie Jun Cui, and co‐workers propose a touch‐programmable metasurface (TPM) based on touch sensing modules to realize various electromagnetic (EM) manipulations and encryptions, in article number 2203871. Through the touch controls, TPM can achieve independent and direct manipulation...
Alkali metals are regarded as the most promising candidates for advanced anode for the next‐generation batteries due to their high specific capacity, low electrochemical potential, and lightweight. However, critical problems of the alkali metal anodes, especially dendrite formation and interface stabilization, remain challenging to overcome. The solid electrolyte interphase (SEI) is a key factor affecting...
Shape memory polymers (SMPs) are a class of smart materials that change shape when stimulated by environmental stimuli. Different from the shape memory effect at the macro level, the introduction of micro‐patterning technology into SMPs strengthens the exploration of the shape memory effect at the micro/nano level. The emergence of shape memory micro/nano patterns provides a new direction for the...
Photodynamic therapy (PDT) with organic photosensitizers generally goes through the oxygen‐dependent process, generating singlet oxygen and/or superoxide anion. However, the generation of reactive oxygen species is often suppressed as a result of hypoxia, one of the common features in tumors, therefore limiting the effectiveness of the tumor treatments. Consequently, it is urgent and significant to...
Radiolabeling counts for much in the functionalization of inorganic nanoparticles (NPs) because it endows NPs with high‐sensitive imaging capacities apart from providing accurate pharmacokinetic information on the labeled particles, which makes the development of relevant radiolabeling chemistry highly desirable. Herein, a novel Ligand Anchoring Group MEdiated RAdioLabeling (LAGMERAL) method is reported,...
Rapid clearance of nanoagents is a critical criterion for their clinical translation. Herein, it is reported that biodegradable and renal clearable nanoparticles are potentially useful for image‐guided photothermal therapy of tumors. The multifunctional nanoparticles with excellent colloidal stability are synthesized through coordination reactions between Fe3+ ions and gallic acid (GA)/polyvinyl pyrrolidone...
Three‐pronged nanoparticles (NPs) that can efficiently prohibit the proliferation of large tumor are developed for inoperable large tumor therapy. The NPs achieve spatially and temporally controlled release of drugs in target sites. The NPs induce the apoptosis of differentiated cancer cells, cancer stem cells, and vascular niches simultaneously. Importantly, the three‐pronged NPs inhibit the growth...
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