9 May 2007 Neutron diffraction from holographic polymer-dispersed liquid crystals
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Abstract
Photopolymerization-induced phase separation of the constituent components in holographic polymer-dispersed liquid crystals (H-PDLCs) causes a huge variation of the refractive index for light as well as for neutrons. We demonstrated that H-PDLCs with the thickness of only 30 micrometers act as extremely efficient gratings for neutrons. The lightinduced refractive-index modulation for neutrons of about 10-6 was observed, which is nearly two orders of magnitude larger than found in the best photo-neutron-refractive materials probed up to now. This makes H-PDLCs very promising candidate for fabricating neutron-optical devices.
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I. Drevensek-Olenik, M. A. Ellabban, M. Fally, K. P. Pranzas, J. Vollbrandt, "Neutron diffraction from holographic polymer-dispersed liquid crystals", Proc. SPIE 6587, Liquid Crystals and Applications in Optics, 65870F (9 May 2007); doi: 10.1117/12.722821; https://doi.org/10.1117/12.722821
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