From an HP press release on the Feynman Prize in Nanotechnology:

  "The Experimental Prize went to the multidisciplinary
   team of chemist R. Stanley Williams and computer
   scientist Philip Kuekes, both of HP Labs in Palo Alto,
   along with chemist James Heath of UCLA. They were
   cited for building a molecular switch, a major step
   toward their long-term goal of building entire memory
   chips that are just a hundred nanometers wide, smaller
   than a bacterium."

The full press release is at

   http://www.hp.com/hpinfo/newsroom/press/13nov00c.htm

--Glenn