Researchers at the University of Cambridge in the UK and IBM in the US have developed a new bottom-up self-assembly technique to grow quantum dots in semiconducting nanowires. Being able to precisely control the properties of complex heterostructures like these means that they could be used to make building blocks for devices like single-electron transistors, high-density memories, light emitters, semiconductor lasers and tunnel diodes, to name but a few possible applications…..
http://nanotechweb.org/cws/article/tech/61936