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Bacterial biofilm‐related infectious diseases severely influence human health. Under typical situations, pathogens can colonize inert or biological surfaces and form biofilms. Biofilms are functional aggregates that coat bacteria with extracellular polymeric substances (EPS). The main reason for the failure of biofilm infection treatment is the low permeability and enrichment of therapeutic agents...
To enhance the catalytic activity of the nanozymes for efficient wound healing infected with multidrug‐resistant bacteria, photo‐based motivations have been suggested, but attention is mainly focused on the external stimulus of near‐infrared light, while the inexhaustible visible one is promising but lack of study. Herein, an efficient visible light‐stimulated peroxidase‐like nanozyme system, TiO2...
A new strategy for retaining long‐range order during ligand exchange of nanocrystal superlattices is used to construct PbSe infrared photodetectors by Christine Orme and co‐workers (article number 2101166). The ordered photodetectors have a 16× higher responsivity and 2× faster response time compared to disordered ones.
Colloidal semiconductor nanocrystals are important building blocks for low‐cost, solution‐processed electronic devices with tunable functionalities. Considerable progress is made in improving charge transport through nanocrystal films by exchanging long insulating ligands with shorter passivating ligands. To take full advantage of this strategy, it is equally important to fabricate close‐packed structures...
Increasing awareness toward environmental remediation and renewable energy has led to a vigorous demand for exploring a win‐win strategy to realize the eco‐efficient conversion of pollutants (“trash”) into energy‐storage nanomaterials (“treasure”). Inspired by the biological metabolism of bacteria, Acidithiobacillus ferrooxidans (A. ferrooxidans) is successfully exploited as a promising eco‐friendly...
Diabetes is a dominating health issue with 425 million people suffering from the disease worldwide and 4 million deaths each year. To avoid further complications, the diabetic patient blood glucose level should be strictly monitored despite there being no cure for diabetes. Colorimetric biosensing has attracted significant attention because of its low cost, simplicity, and practicality. Recently,...
Two dimensional arrays of nanoparticles often exhibit interesting optical and chemical properties, but are difficult to prepare. Large freestanding sheets of 2‐D nanoparticle arrays anchored onto flexible polymer substrates are fabricated by S. E. J. Bell and co‐workers in article number 1602163, through a simple and elegant one‐pot selfassembly technique. The particles are partly exposed even in...
2D arrays of metal nanoparticles formed at liquid–liquid interfaces have been fixed in situ to a thin polymer support to create freestanding large (cm2) composite films where the particles remain exposed rather than being trapped within the polymer. Applications of these flexible robust 2D nanoparticle arrays as sensors, thin film conductors, antimicrobial coatings, and dip‐in catalysts are shown...
A protocol to quantify the distribution of surface atoms of concave nanocatalysts according to their coordination number is proposed. The 3D surface of an Au@Pd concave nanocube is reconstructed and segmented. The crystallographic coordinates and low‐coordinate surface atom densities of the concave facets are determined. The result shows that 32% of the surface atoms are low‐coordinated, which may...
On page 6332, X. Y. Zhong, X. X. Ke, and co‐workers develop a method that uses 3D electron tomography to quantify the distribution of surface atoms of a Au@Pd concave nanocube according to their coordination number. The quantification of low‐coordinated surface atoms is essential to correlate the catalytic properties to the surface structures of real catalysts and to bridge the “materials gap”.
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