Stacking layers of nanometer-thin semiconducting materials at different angles is a new approach to designing the next generation of energy-efficient transistors and solar cells.
The influenza virus, for example, has 13 genes and is about 100 nanometers across.
A nanometer is a billionth of a meter.
One nanometer equals one billionth of a meter.
By the time you are a couple of hundred nanometers from the surface, the evanescent is pretty much gone.
The two layers, having thicknesses of tens of nanometers, act as dopant-free contacts for holes and electrons, respectively.
A nanometer is one billionth of a meter and roughly 1000 times smaller than the width of a human hair.
A nanometer is a billionth of a meter, and a human hair is about 100,000 nanometers thick.
