|8 November 2001|
Nature © Macmillan Publishers Ltd.
X-ray microscopy: Light goes fourth
at high-energy physics labs around the world are working on the specification
of the 'fourth-generation' light sources, based on free-electron laser synchrotrons,
that will be capable of producing light of such extreme brilliance that new ways
of focusing the radiation will have to be found. A device reported this week,
based on the simple concept of an array of pinholes, could be the answer. The
'photon sieve' exploits the monochromaticity and coherence of light from an electron-free
laser to focus soft X-rays with unprecedented sharpness. The combination of sharper
focus with extreme brightness should herald a new era of high-resolution X-ray
Nature © Macmillan Publishers Ltd 2001 Registered No. 785998 England.