Wet etching makes high quality topological superconductor

Topological insulators have shot to fame in recent years following observations of exotic phenomena like the quantum spin Hall (QSH) effect in quantum wells made from mercury telluride (HgTe). However, research on these materials, which are electrical insulators in the bulk, but which can conduct electricity on their surface (via special surface electronic states), is Read more about Wet etching makes high quality topological superconductor[…]

New knit theory could help make smart self-folding materials

As well as being a popular and pleasant hobby, knitting is a thousand-year-old technology and, unlike weaving, it can produce loose yet extremely stretchable fabrics. Researchers in France have now developed a model to describe how individual stitches in a knitted fabric deform when stretched. The work could help in the design of thread-based smart Read more about New knit theory could help make smart self-folding materials[…]