Reversible Shaping of Microwells by Polarized Light Irradiation
In the last years, stimuli-responsive polymeric materials have attracted great interest, due to their low cost and ease of structuration over large areas combined with the possibility to actively manipulate their properties. In this work, we propose a polymeric pattern of soft-imprinted microwells c...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/6812619 |
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| _version_ | 1832551999576473600 |
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| author | Federica Pirani Angelo Angelini Francesca Frascella Emiliano Descrovi |
| author_facet | Federica Pirani Angelo Angelini Francesca Frascella Emiliano Descrovi |
| author_sort | Federica Pirani |
| collection | DOAJ |
| description | In the last years, stimuli-responsive polymeric materials have attracted great interest, due to their low cost and ease of structuration over large areas combined with the possibility to actively manipulate their properties. In this work, we propose a polymeric pattern of soft-imprinted microwells containing azobenzene molecules. The shape of individual elements of the pattern can be controlled after fabrication by irradiation with properly polarized light. By taking advantage of the light responsivity of the azobenzene compound, we demonstrate the possibility to reversibly modulate a contraction-expansion of wells from an initial round shape to very narrow slits. We also show that the initial shape of the microconcavities can be restored by flipping the polarization by 90°. The possibility to reversibly control the final shape of individual elements of structured surfaces offers the opportunity to engineer surface properties dynamically, thus opening new perspectives for several applications. |
| format | Article |
| id | doaj-art-2536b9d2648443d88b629824b3724ce5 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-2536b9d2648443d88b629824b3724ce52025-02-03T05:59:46ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/68126196812619Reversible Shaping of Microwells by Polarized Light IrradiationFederica Pirani0Angelo Angelini1Francesca Frascella2Emiliano Descrovi3Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyDipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyDipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyDipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, ItalyIn the last years, stimuli-responsive polymeric materials have attracted great interest, due to their low cost and ease of structuration over large areas combined with the possibility to actively manipulate their properties. In this work, we propose a polymeric pattern of soft-imprinted microwells containing azobenzene molecules. The shape of individual elements of the pattern can be controlled after fabrication by irradiation with properly polarized light. By taking advantage of the light responsivity of the azobenzene compound, we demonstrate the possibility to reversibly modulate a contraction-expansion of wells from an initial round shape to very narrow slits. We also show that the initial shape of the microconcavities can be restored by flipping the polarization by 90°. The possibility to reversibly control the final shape of individual elements of structured surfaces offers the opportunity to engineer surface properties dynamically, thus opening new perspectives for several applications.http://dx.doi.org/10.1155/2017/6812619 |
| spellingShingle | Federica Pirani Angelo Angelini Francesca Frascella Emiliano Descrovi Reversible Shaping of Microwells by Polarized Light Irradiation International Journal of Polymer Science |
| title | Reversible Shaping of Microwells by Polarized Light Irradiation |
| title_full | Reversible Shaping of Microwells by Polarized Light Irradiation |
| title_fullStr | Reversible Shaping of Microwells by Polarized Light Irradiation |
| title_full_unstemmed | Reversible Shaping of Microwells by Polarized Light Irradiation |
| title_short | Reversible Shaping of Microwells by Polarized Light Irradiation |
| title_sort | reversible shaping of microwells by polarized light irradiation |
| url | http://dx.doi.org/10.1155/2017/6812619 |
| work_keys_str_mv | AT federicapirani reversibleshapingofmicrowellsbypolarizedlightirradiation AT angeloangelini reversibleshapingofmicrowellsbypolarizedlightirradiation AT francescafrascella reversibleshapingofmicrowellsbypolarizedlightirradiation AT emilianodescrovi reversibleshapingofmicrowellsbypolarizedlightirradiation |