Sun-tracking optical element realized using thermally activated transparency-switching material

Harry Apostoleris, Marco Stefancich, Samuele Lilliu, Matteo Chiesa

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We present a proof of concept demonstration of a novel optical element: a light-responsive aperture that can track a moving light beam. The element is created using a thermally-activated transparency-switching material composed of paraffin wax and polydimethylsiloxane (PDMS). Illumination of the material with a focused beam causes the formation of a localized transparency at the focal spot location, due to local heating caused by absorption of a portion of the incident light. An application is proposed in a new design for a self-tracking solar collector.

Original languageBritish English
Pages (from-to)A930-A935
JournalOptics Express
Volume23
Issue number15
DOIs
StatePublished - 27 Jul 2015

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