"The significance of this achievement is that we are not just moving atoms around or looking at them through a microscope," says Professor Michelle Simmons, a co-author of a paper on the subject that is being published by Nature Nanotechnology. The paper is entitled "Spectroscopy of Few-Electron Single-Crystal Silicon Quantum Dots".
"We are manipulating individual atoms and placing them with atomic precision, in order to make a working electronic device," elaborated Simmons. "We have replaced just seven individual silicon atoms with phosphorus atoms. That is amazing exactness"."