American Physical Society, Physical Review Letters, 12(105), 2010
DOI: 10.1103/physrevlett.105.123904
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We report a breakthrough in the search for versatile diffractive elements for cold neutrons. Nanoparticles are spatially arranged by holographical means in a photopolymer. These grating structures show remarkably efficient diffraction of cold neutrons up to about 50% for effective thicknesses of only 200 micron. They open up a profound perspective for next generation neutron-optical devices with the capability to tune or modulate the neutron diffraction efficiency. ; Comment: 4 pages, 2 figures