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To optimize the synthesis of functionally designed nanoparticles, a clear understanding of their formation mechanisms is needed. This Review presents the structural properties of nanoclusters and their role in the prenucleation period, and discusses nonclassical nucleation and growth models, as well as heterogeneous nucleation of multicomponent nanoparticles.
Graphene has now enabled the development of faster and more powerful batteries and supercapacitors. In this Review, we discuss the current status of graphene in energy storage, highlight ongoing research activities and present some solutions for existing challenges.
In this Review, the structure, bonding and defects of half-Heusler compounds are explained in terms of the framework of Zintl (or valence-precise) chemistry. This deeper understanding of the structure and electronic properties of half-Heusler compounds should aid the design of improved thermoelectric materials.
Piezotronics and piezo-phototronics offer new means of implementing adaptive electronics and optoelectronics, taking advantage of the coupling between piezoelectric polarization and semiconductor properties in piezoelectric semiconductor nanomaterials. This Review discusses the recent progress in piezotronics and piezo-phototronics, as well as future research directions.
Mesoporous materials are finding increasing uses in energy conversion and storage devices. This Review highlights recent developments in the synthesis of mesoporous materials and their applications as electrodes and/or catalysts in solar cells, solar fuel production, rechargeable batteries, supercapacitors and fuel cells.
Recent research into semiconductor nanowire lasers has resulted in the advent of new materials, a broader wavelength selection and effective electrical pumping schemes, thereby bringing these nanoscale lasers much closer to application in fields like communications, computing, sensing and imaging.
Assisted by rationally designed novel plasmonic nanostructures, surface-enhanced Raman spectroscopy has presented a new generation of analytical tools (that is, tip-enhanced Raman spectroscopy and shell-isolated nanoparticle-enhanced Raman spectroscopy) with an extremely high surface sensitivity, spatial resolution and broad application for materials science and technology.
This Perspective explores and explains the fundamental dogma of nanoparticle delivery to tumours and answers two central questions: ‘how many nanoparticles accumulate in a tumour?’ and ‘how does this number affect the clinical translation of nanomedicines?’
The polymer materials of the twenty-first century will be complex chemical systems that can respond and adapt to their environment. Such materials can be attained by synthesizing precision macromolecules with controlled architectures, and by mastering polymer interactions and self-organization.
Membranes have an increasingly important role in alleviating water scarcity and the pollution of aquatic environments. Promising molecular-level design approaches are reviewed for membrane materials, focusing on how these materials address the urgent requirements of water treatment applications.
Post-lithium-ion batteries are reviewed with a focus on their operating principles, advantages and the challenges that they face. The volumetric energy density of each battery is examined using a commercial pouch-cell configuration to evaluate its practical significance and identify appropriate research directions.
The incorporation of structural defects, in particular of interfaces, into crystalline lattices results in enhanced material properties. In this Review, different types of boundaries and interfaces are discussed, including high- and low-angle grain boundaries, twin boundaries, nanotwinned and nanolaminated structures, and gradient nanostructures.
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.
