Scientists have demonstrated that a field-emission current signal can be used to arrange the position of thousands of nanometer-sharp needles. These probes can be applied to write and read in new ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. A San Diego doctor has been accused of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER — The dentist accused of reusing ...