“…Embossing techniques in combination with UV-curable ORMOCER layers lead to sub-mm-structures on transparent substrates like glasses and polymers. [67,68] The so called ªmoth-eyeº-structures show no light-scattering and a smooth transition of the refractive index at the interface air/substrate and therefore show anti-reflective behavior. [69±71] If for the synthesis of ORMOCERs precursors containing functional groups are used, which are able to react selectively and reversibly with different gases (SO 2 , NO 2 , CO 2 , NH 3 ), sensors based on electrical or optical detection principles can be assembled.…”