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

Abhijit Chandra Roy, Mridul Yadav, Edward Peter Arul, Anubhav Khanna, Animangsu Ghatak

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)5356-5364
Number of pages9
Issue number21
Publication statusPublished - 31-05-2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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