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A second-order topological insulator in an acoustical metamaterial with a breathing kagome lattice, supporting one-dimensional edge states and zero-dimensional corner states is demonstrated.
An ordered structure that has only translational periodicity in one direction— unlike the known solid categories of crystal, quasicrystal and amorphous— is discovered in MgO and Nd2O3 ceramics.
The Zika virus infects the central nervous system and results in severe brain malformation. An amphiphatic peptide is now shown to penetrate the blood–brain barrier, reducing viral loads due to its activity against Zika and other mosquito-borne viruses.
Dense suspensions of hard particles readily display discontinuous shear thickening under shear but not reversible shear jamming. Here it is shown that the formation of interparticle hydrogen bonds is crucial for the shear jamming of these suspensions.
A thorough analysis of the optical and transport properties of several two-dimensional organic conductors and insulators with varying on-site correlation strengths and bandwidths led to a quantitative phase diagram for pristine Mott insulators.
Long coherence times in a subset of states that allows for transitions in both microwave and optical range have been reported using an isotopically purified 171Yb3+:Y2SiO5 crystal, rendering the system suitable for quantum information applications.
Borophene grown under suitable conditions can have phase intermixing, with line defects in each phase adopting the unit structure of the other phase. Such 1D defects self-assemble into 2D periodic arrays, constituting new phases of borophene.
Ultracold atoms can model single-order quantum phases, but coupling of different order parameters has not been shown. Here, this is demonstrated using two optical resonators, facilitating exploration of multiple-order systems such as multiferroics.
Magnetic vortices formed in antiferromagnetic haematite and imprinted on a Co ferromagnetic over-layer have been observed using X-ray magnetic linear and circular dichroism photoemission electron microscopy. These vortex pairs can be manipulated by the application of magnetic fields.
Monatomic glasses formed by rapidly quenching Sb films from a molten state are shown to work as phase change materials for memory applications at room temperature.
By using stacked macrocycle dimers, a 2D nanosheet self-assembles that exclusively captures a single enantiomer, and can release it by external stimulus via salt addition.
High and reversible nitrogen dioxide (NO2) uptake, and low-concentration NO2 removal from gas mixtures, is observed in a metal–organic framework. The NO2 is bound within the pores by cooperative supramolecular interactions.
Fundamental understanding of electrocatalysis is key to a transition to renewable energy systems. A strategy to ‘electrify’ complex oxide-based model catalysts is now proposed to explore electrocatalytic reactions in liquid electrolytes.
In the antiferromagnetic insulator Cr2O3 a strong modulation of the spin conduction with magnetic field near the Néel temperature is measured. By analogy with its charge counterpart, this effect is termed spin colossal magnetoresistance.