13285 Philip Abelson: Funding the nanotech frontier.
Science 14 April 2000, 269.

5381 W. Wayt Gibbs: Crystal light. Storing volumes of data in four-dimensional
spots. Scientific American September 1993, 110-111.
A handful of scientists around the world think the next giant leap in data
density will come from crystals that can remember and reproduce patterns and
colours of light. Density is not the sole goal however, the real problem is
speed.