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

Harry Apostoleris; Marco Stefancich; Samuele Lilliu; Matteo Chiesa

doi:10.1364/OE.23.00A930

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

Harry Apostoleris
, Marco Stefancich
, Samuele Lilliu
, Matteo Chiesa

Mechanical & Nuclear Engineering

National Research Council

Research output: Contribution to journal › Article › peer-review

13 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 language	British English
Pages (from-to)	A930-A935
Journal	Optics Express
Volume	23
Issue number	15
DOIs	https://doi.org/10.1364/OE.23.00A930
State	Published - 27 Jul 2015

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10.1364/OE.23.00A930

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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.",

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AU - Lilliu, Samuele

AU - Chiesa, Matteo

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Y1 - 2015/7/27

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AB - 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.

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

Abstract

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