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The cover image presents resistance maps of rhombohedral pentalayer graphene as a function of magnetic field and charge density. These maps provide evidence for correlation-driven Chern insulator states in a natural graphitic material. No moiré reconstruction is required.
Nanotechnology is intimately intertwined with efforts to bring bottom-up synthetic cell research to the forefront, and only strengthening these bonds will expand the scope of what this might achieve.
The legal definition of a nanomaterial differs around the world, meaning that the same material may be classified as a nanomaterial, or not, depending on the country where it is classified. The first steps towards converging on an international definition are to recognize the differences between existing nanomaterial definitions and to agree on particle counting methods. Meanwhile, we propose a naming convention that indicates the key criteria of a specific definition of a nanomaterial.
A biohybrid, leaf-spring design of DNA origami functions as a pulsating nanoengine that exploits the DNA-templated RNA transcription mechanism while consuming nucleoside triphosphates as fuel. The nanoengine also drives a nanomechanical follower structure.
As singularities in non-Hermitian systems, exceptional points exhibit rich topological characteristics and have potential for sensing applications. Now, a nitrogen-vacancy spin in diamond exhibits a third-order exceptional line upon the introduction of multiple symmetries in the non-Hermitian Hamiltonian of the spin system.
An integrated transducer based on a planar superconducting resonator coupled to a silicon photonic cavity through a mechanical oscillator made from lithium niobate achieves a transduction efficiency of 0.9%.
Combined theoretical and experimental efforts provide systematic insights into the origin of self-switchable conductivity in layered semiconductor ferroelectrics. These mechanistic findings may enable advanced logic-in-memory devices.
Pentalayer graphene in the rhombohedral stacking order exhibits rich phases including a correlated insulator, isospin-polarized metals and Chern insulators. These findings demonstrate electron-correlated and topological states in crystalline 2D materials without the need for a moiré superlattice.
Stacking graphene in the rhombohedral order to the tetralayer yields stronger Coulomb interactions, which results in insulating and metallic states with spontaneous symmetry breaking in spin, valley and layer degrees of freedom.
High-energy interlayer excitons in van der Waals semiconducting transition metal dichalcogenides lie far above the bandgap and emit in the ultraviolet range.
Resonant laser excitation is used to control the charge states of colour centre clusters in diamond with sub-diffraction resolution. These states are long-lived and can be read out non-destructively with low energy consumption.
Nanoindentation of the microscale honeybee comb reveals a stiffness gradient that spans two orders of magnitude, which amplifies the catapult effect and facilitates solid particle repellency. By leveraging this, the study presents the fabrication of scaled-up, bioinspired stiffness-gradient elastomeric catapult-like soft actuators.
An autonomous DNA-origami nanomachine powered by the chemical energy of DNA-templated RNA-transcription-consuming nucleoside triphosphates as fuel performs rhythmic pulsations is demonstrated. In combination with a passive follower, the nanomachine acts as a mechanical driver with molecular precision.
DNA-origami-based insulin assembly into well-defined nanoclusters reveals that insulin valency and spatial organization modulate insulin receptor activation and downstream responses independent of ligand concentration.
Activation of the complement system by nanoparticles limits nanomedicine. The co-administration of fused complement inhibitors could largely block complement opsonization and unwanted granulocyte/monocyte uptake, as well as reducing side-effects of bolus-injected nanoparticles.
Here, the authors find a decrease in hepatic phagocytic uptake of nanoparticles in old mice due to age-associated downregulation of the scavenger receptor MARCO, which led to improved tumour delivery and antitumour efficacy of cancer nanomedicine, showing the need to consider age as a factor in therapeutics.