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Cancer Stem Cells
In article number 2200364, Zhuo Xiong and co‐workers report that 3D bioprinted GelMA‐nanoclay hybrid hydrogels can induce and enrich colorectal cancer stem cells (CSCs) by promoting the formation of spheroids by activating Wnt/β‐catenin signaling. These spheroids can be isolated easily and are promising CSC enrichment models with increased stemness, high consistency, yield and efficiency...
Single atom sites (SAS) of FeN4 are clarified as one of the most active components for the oxygen reduction reaction (ORR). Effective strategies by engineering the local coordination environment and site density of FeN4 sites are crucial to further enhance the electrocatalytic ORR performance. Herein, the integration of a second metal of Mn with Fe to construct Fe&Mn/N‐C catalysts with enhanced...
By controlling the configuration of polymorphic phases in high‐k Hf0.5Zr0.5O2 thin films, new functionalities such as persistent ferroelectricity at an extremely small scale can be exploited. To bolster the technological progress and fundamental understanding of phase stabilization (or transition) and switching behavior in the research area, efficient and reliable mapping of the crystal symmetry encompassing...
The filtering capacitor plays an essential role in the ever‐increasing electronics for current stability in complicated environments. However, because of the low specific capacitance and bulky volume, current filtering devices have difficulty satisfying the harsh temperature environment and small size for supercomputers, electric vehicles, aircraft and so on. Therefore, an ultra‐fast electrochemical...
Nonlinear elastic materials are significant for engineering and micromechanics. Droplets with the merits of easy‐accessibility, diversity, and energy‐absorption capability exhibit a variety of non‐Hookean elastic behaviors. Herein, benefiting from the confinement of heterogeneous‐wettable parallel plates, the non‐Hookean mechanics of the droplet‐based spring are systematically investigated. Experimental...
Exploring novel electrode composites and their unique interface physics plays a significant role in tuning electrochemical properties for boosting the performance of sodium‐ion batteries (SIBs). Herein, mixed‐dimensional G/NiS2‐MoS2 heterostructures are synthesized in a low‐cost meteorological vulcanization process. The stable graphene supporting layer and nanowire heterostructure guarantee an outstanding...
It is still a challenging target to achieve photocatalytic CO2 conversion to valuable chemicals with H2O as an electron donor. Herein, 2D imide‐based covalent organic polymer nanosheets (CoPcPDA‐CMP NSs), which integrate cobalt phthalocyanine (CoPc) moiety for reduction half‐reaction and 3,4,9,10‐perylenetetracarboxylic diimide moiety for oxidation half‐reaction, are constructed as a Z‐scheme artificial...
High‐capacity Li‐rich Mn‐based oxide cathodes show a great potential in next generation Li‐ion batteries but suffer from some critical issues, such as, lattice oxygen escape, irreversible transition metal (TM) cation migration, and voltage decay. Herein, a comprehensive structural modulation in the bulk and surface of Li‐rich cathodes is proposed through simultaneously introducing oxygen vacancies...
Aqueous zinc (Zn) metal batteries have been regarded as the most promising aqueous batteries due to their low redox potential, high theoretical capacity, and abundant Zn resources. Unfortunately, Zn dendrite growth and serious side reactions drastically curtail the cycle life, severely affecting their large‐scale application. Herein, a multifunctional ordered Zn‐aminotrimethylene phosphonic acid (Zn‐ATMP)...
High‐entropy oxides (HEOs) are gradually becoming a new focus for lithium‐ion battery (LIB) anodes due to their vast element space/adjustable electrochemical properties and unique single‐phase retention ability. However, the sluggish kinetics upon long cycling limits their further generalization. Here, oxygen vacancies with targeted functionality are introduced into rock salt‐type (MgCoNiCuZn)O through...
Two‐photon polymerization (TPP) is a micro/nano‐fabrication technology for additive manufacturing, enabling 3D printing of polymeric materials using ultrafast laser pulses. In this work, two‐photon polymerization is realized inside a metal–organic framework (MOF) crystal. Intricate structures are built in the porous crystal to create a microstructure‐in‐crystal hybrid. Furthermore, the MOF can be...
The current lack of understanding about how nanocarriers cross the blood‐brain barrier (BBB) in the healthy and injured brain is hindering the clinical translation of nanoscale brain‐targeted drug‐delivery systems. Here, the bio‐distribution of lipid nano‐emulsion droplets (LNDs) of two sizes (30 and 80 nm) in the mouse brain after traumatic brain injury (TBI) is investigated. The highly fluorescent...
Considerable research efforts into the promises of electrogenic bacteria and the commercial opportunities they present are attempting to identify potential feasible applications. Metabolic electrons from the bacteria enable electricity generation sufficient to power portable or small‐scale applications, while the quantifiable electric signal in a miniaturized device platform can be sensitive enough...
Though amphiphiles are ubiquitously used for altering interfaces, interfacial reorganization processes are in many cases obscure. For example, adsorption of micelles to liquid–liquid interfaces is often accompanied by rapid reorganizations toward monolayers. Then, the involved time scales are too short to be followed accurately. A block copolymer system, which comprises poly(ethylene oxide)110‐b‐poly{[...
Recent progress in synthetic strategies, analysis techniques, and computational modeling assist researchers to develop more active catalysts including metallic clusters to single‐atom active sites (SACs). Metal coordinated N‐doped carbons (M‐N‐C) are the most auspicious, with a large number of atomic sites, markedly performing for a series of electrochemical reactions. This perspective sums up the...
The origin of life is still one of humankind's great mysteries. At the transition between nonliving and living matter, protocells, initially featureless aggregates of abiotic matter, gain the structure and functions necessary to fulfill the criteria of life. Research addressing protocells as a central element in this transition is diverse and increasingly interdisciplinary. The authors review current...
Carbon monoxide (CO) is a gaseous signaling molecule that modulates inflammation, cell survival, and recovery after myocardial infarction. However, handling and dosing of CO as a compressed gas are difficult. Here, light‐triggerable and magnetic resonance imaging (MRI)‐detectable CO release from dimanganese decacarbonyl (CORM‐1) are demonstrated, and the development of CORM‐1‐loaded polymeric microbubbles...
Copper (Cu)‐based metal–organic frameworks (MOFs) and MOF‐derived catalysts are well studied for electroreduction of carbon dioxide (CO2); however, the effects of organic linkers for the selectivity of CO2 reduction are still unrevealed. Here, a series of Cu‐based MOF‐derived catalysts is investigated with different organic linkers appended, named X‐Cu‐BDC (BDC = 1,4‐benzenedicarboxylic acid, X = NH...
Diabetic wound healing remains challenging owing to the risk for bacterial infection, hypoxia, excessive glucose levels, and oxidative stress. Glucose‐activated cascade reactions can consume glucose and eradicate bacteria, avoiding the direct use of hydrogen peroxide (H2O2) and wound pH restriction on peroxidase‐like activity. However, the anoxic microenvironment in diabetic wounds impedes the cascade...
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