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New catalysis materials are required for electrochemical reactions that are vital for clean energy production and environmental remediation. The use of nanostructured materials for improving catalytic reactivity is analysed in this Review in the context of model reactions of O2 reduction, CO2 electroreduction and ethanol oxidation.
Iron-based superconductors display high transition temperatures. The physics behind the unconventional superconductivity of these systems can be investigated by taking into consideration the observed strong electronic correlations and bad-metal behaviour, the nature of their magnetic properties, and the presence of electronic nematicity and of quantum criticalities.
The mechanical performance of hard biological materials is not only governed by their composition and architecture but also by the interfaces they contain. This Review discusses the composition, structure and mechanics of key interfaces within nacre, bone and wood, and their role in deformation and toughness.
Grafting DNA strands onto colloidal nano- and microparticles endows them with sequence-specific interactions. This Review explains how these interactions emerge from reactions between the strands and how the DNA sequences can add information that tells the particles how to self-assemble.
Single-molecule electronic junctions comprise three components: anchors, electrodes and the molecular bridge. This Review surveys the relationship between the chemical structures and the electronic properties of each component, and extends the discussion to switching functions and the phenomenon of quantum interference.
Acoustic metamaterials can be used manipulate sound waves with a high degree of control. Their applications include acoustic imaging and cloaking. This Review outlines the designs and properties of these materials, discussing transformation acoustics theory, anisotropic materials and active acoustic metamaterials.
Metal–organic frameworks (MOFs) have shown promise in a broad range of applications, including catalysis. In this Review, the chemical, thermal and mechanical stabilities of MOFs, in particular with catalytic uses in mind, are discussed.
Tuning the reversible chemistries in hydrogels makes it possible to mimic the dynamic nature of the extracellular matrix. Various chemistries have been incorporated to regulate cell spreading, biochemical presentation and matrix mechanics.
Nature is the master in precision synthesis of macromolecules. In synthetic materials, achieving a high degree of structural precision is challenging and the influence of molecular defects on the properties of materials remains uncertain.
Colloidal crystals composed of isotropic spheres are powerful model systems for the studies of crystallization, melting and solid–solid transitions at the single-particle level. Tunable, anisotropic or active particles provide greater opportunities to study crystal assembly and phase transitions.
Photoelectrochemical (PEC) devices offer the promise of efficient artificial photosynthesis. In this Review, recently developed light-harvesting materials for PEC application are scrutinized with respect to their atomic constitution, electronic structure and potential for practical performance in PEC cells.