Generation of Aspherical Optical Lenses via Arrested Spreading and Pinching of a Cross-Linkable Liquid

Aspherical optical lenses with spatially varying curvature are desired for capturing high quality, aberration free images in numerous optical applications. Conventionally such lenses are prepared by multistep top-down processes which are expensive, time-consuming, and prone to high failure rate. In...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 32(2016), 21 vom: 31. Mai, Seite 5356-64
1. Verfasser: Roy, Abhijit Chandra (VerfasserIn)
Weitere Verfasser: Yadav, Mridul, Arul, Edward Peter, Khanna, Anubhav, Ghatak, Animangsu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a Aspherical optical lenses with spatially varying curvature are desired for capturing high quality, aberration free images in numerous optical applications. Conventionally such lenses are prepared by multistep top-down processes which are expensive, time-consuming, and prone to high failure rate. In this context, an alternate method is presented here based on arrested spreading of a sessile drop of a transparent, cross-linkable polymeric liquid on a solid substrate heated to an elevated temperature. Whereas surface tension driven flow tends to render it spherical, rapid cross-linking arrests such flow so that nonequilibrium aspherical shapes are attained. It is possible to tune also the initial state of the drop via delayed pinching of a liquid cylinder which precedes its release on the substrate. This method has led to the generation of a wide variety of optical lenses, ranging from spherical plano convex to superspherical solid immersion to exotic lenses not achieved via conventional methods 
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700 1 |a Yadav, Mridul  |e verfasserin  |4 aut 
700 1 |a Arul, Edward Peter  |e verfasserin  |4 aut 
700 1 |a Khanna, Anubhav  |e verfasserin  |4 aut 
700 1 |a Ghatak, Animangsu  |e verfasserin  |4 aut 
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