photon sieve

There may be a new kind of zone plate called the 'photon sieve'. Instead of
using clear and opaque concentric rings, it uses pinholes of decreasing diameter
arranged in rings related to the zone plate.

See: http://www-hasylab.desy.de/newsletter/2001-12-01.htm

It was announced in the Nov 8, 2001 issue of the science journal Nature.
Received on Mon Feb 4 09:42:48 2002