Melting a crystal topologically

The introduction of topology, a branch of mathematics focusing on the properties of 'knots,' into physics has inspired revolutionary concepts such as topological phases of matter and topological phase transitions, which resulted ...

New 'brick' for nanotechnology: Graphene nanomesh

Researchers at Japan Advanced Institute of Science and Technology (JAIST) have successfully fabricated suspended graphene nanomesh in a large area by helium ion beam microscopy. Six nm diameter nanopores were uniformly patterned ...

Symmetry-enforced three-dimension Dirac phononic crystals

Dirac semimetals are critical states of topologically distinct phases. Such gapless topological states have been accomplished by a band-inversion mechanism, in which the Dirac points can be annihilated pairwise by perturbations ...

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