title: Antireflective "moth-eye" structures on tunable optical silicone membranes.
abstract: Flexible silicone membranes are key components for tunable optical lenses. The elastic operation of the membranes impedes the use of classical layer systems for an antireflective (AR) effect. To overcome this limitation, we equipped optical elastomer membranes with "moth-eye" structures directly in the flexible silicone substrate. The manufacturing of the AR structures in the flexible membrane includes a mastering process based on block copolymer micelle nanolithography followed by a replication method. We investigate the performance of the resulting AR structures under strain of up to 20% membrane expansion. A significant transmittance enhancement of up to 2.5% is achieved over the entire visible spectrum, which means that more than half of the surface reflection losses are compensated by the AR structures.
authors: University of Applied Sciences Jena, Carl-Zeiss-Promenade 2, 07745 Jena, Germany. Robert.brunner@fh‐jena.de
authors: Robert
authors: R
authors: Brunner
authors: Bettina
authors: B
authors: Keil
authors: Christoph
authors: C
authors: Morhard
authors: Dennis
authors: D
authors: Lehr
authors: Jan
authors: J
authors: Draheim
authors: Ulrike
authors: U
authors: Wallrabe
authors: Joachim
authors: J
authors: Spatz
mesh_terms: D000818:Animals; D040761:Biomimetic Materials / Q000737:chemistry*; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D004867:Equipment Design; D005898:Glass / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D007909:Lenses; D008823:Micelles; D008855:Microscopy, Electron, Scanning; D009036:Moths; D049329:Nanostructures / Q000737:chemistry / Q000648:ultrastructure; D009799:Ocular Physiological Phenomena; D012031:Refractometry / Q000295:instrumentation
chemical_list: D004129:Dimethylpolysiloxanes; D008823:Micelles; C013830:baysilon; D006046:Gold