Nano News: 07/28/15

Spins in graphene with a hedgehog texture

At a surface or interface the electron spin can form specific patterns but it remains in the surface plane. Helmholtz Zentrum Berlin (HZB) researchers have now succeeded in turning the spin out of the plane, and they explain why this is a principle property. The results were published on 27. July 2015 in ("Tunable Fermi level and hedgehog spin texture...

Asymmetric optical-invisibility camouflage

A joint research team from RIKEN and Tokyo Institute of Technology has constructed the design theory of asymmetric invisibility camouflage devices ("Optical Lattice Model Toward Nonreciprocal Invisibility Cloaking"). Optical invisibility camouflage (or invisibility cloaking) is a technology to make an object seem invisible by causing incident light...

Reshaping the solar spectrum to turn light to electricity

When it comes to installing solar cells, labor cost and the cost of the land to house them constitute the bulk of the expense. The solar cells -- made often of silicon or cadmium telluride -- rarely cost more than 20 percent of the total cost. Solar energy could be made cheaper if less land had to be purchased to accommodate solar panels, best achieved...