Physicists design metamaterials with built-in frustration for mechanical memory UvA_Amsterdam nature
. These systems typically exhibit strongly degenerated and heterogeneous ground states and hence escape the Ginzburg–Landau paradigm of phase ordering. Here, combining experiments, simulations and theory we uncover an unanticipated form of topological order in globally frustrated matter: non-orientable order. We demonstrate this concept by designing globally frustrated metamaterials that spontaneously break a discretesymmetry.
We explain our observations by generalizing the theory of elasticity to non-orientable order-parameter bundles. We show that non-orientable equilibria are extensively degenerated due to the arbitrary location of topologically protected nodes and lines where the order parameter must vanish. We further show that non-orientable order applies more broadly to objects that are non-orientable themselves, such as buckled Möbius strips and Klein bottles.
South Africa Latest News, South Africa Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Our Planet II Series Producer On Making Nature Docs Must-See TVWe chat with OurPlanetII producer Huw Cordey about going where few nature docuseries have gone before, ending on a cliffhanger, and more. Our Planet II premieres June 14 on netflix:
Read more »
Transposon signatures of allopolyploid genome evolution - Nature CommunicationsAssigning assembled chromosomes to subgenome in allopolypoid genome analysis is challenging. Here, the authors report a statistical formwork for identifying evolutionarily coherent subgneomes relying on transposable elements to group chromosomes into sets with shared ancestry and apply it in cyprinids, false flax and strawberry.
Read more »
Influence of El Niño on the variability of global shoreline position - Nature CommunicationsIn this study, the authors use a global dataset of satellite-derived shoreline positions, and demonstrate that their interannual evolution is dominated by El Niño through its worldwide influence of sea level, river discharge and ocean waves
Read more »
Genetically adjusted PSA levels for prostate cancer screening - Nature MedicineAnalyses of large population-based cohorts and clinical trials show that accounting for polygenic scores for PSA levels improves prostate cancer risk prediction, suggesting an approach for enhancing screening accuracy. Linda_Kachuri johnwitte
Read more »
Integrated multi-omics for rapid rare disease diagnosis on a national scale - Nature MedicineThe Australian Acute Care Genomics program report shows that integrating rapid whole genome sequencing and multiomic analyses informs diagnoses and treatment decisions in a prospective cohort of 290 critically ill infants & children. ZornitzaS GenomeSeb
Read more »