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Fabrication and characterization of diffraction gratings in ophthalmic polymers by using UV direct laser interference patterning

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dc.contributor.authorSola, Daniel
dc.contributor.authorAlamri, Sabri
dc.contributor.authorLasagni, Andrés F.
dc.contributor.authorArtal, Pablo
dc.contributor.departmentFísica
dc.date.accessioned2025-01-17T11:31:31Z
dc.date.available2025-01-17T11:31:31Z
dc.date.created2019
dc.date.issued2019-05
dc.description© 2019 Elsevier B.V.. This document is the published version of a published work that appeared in final form in Applied Surface Science To access the final edited and published work see: https://doi.org/10.1016/j.apsusc.2019.01.071
dc.description.abstractThe fabrication of diffractive elements in ophthalmic polymers to induce refractive index changes which may be applied for refractive correction is of great interest in the fields of Optics and Ophthalmology. In this work, polyhydroxyethyl-methacrylate and silicone hydrogel polymers used as soft contact lenses were structured with linear periodic patterns by means of Direct Laser Interference Patterning (DLIP). As the laser source, a Q-Switched laser system emitting 10 ns pulses at a wavelength of 266 nm was used to generate the periodic modulation on the surface of the polymer materials. The experiments were carried out employing a two-beam interference setup, studying the features of the laser processed areas as a function of both the laser fluence and the interference period. The topography of the structured areas was investigated using optical confocal microscopy. Compositional and structural modifications on the materials were studied by means of micro-Raman spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). Finally, periodic patterns were characterized through diffractive techniques under illumination of a continuous-wave 632.8 nm He-Ne laser to determine the diffractive properties of the DLIP periodic patterns and the refractive index change induced by the laser processing.es
dc.formatapplication/pdfes
dc.format.extent8es
dc.identifier.citationApplied Surface Science Volume 476, Pages 128 – 135, 2019.
dc.identifier.doihttps://doi.org/10.1016/j.apsusc.2019.01.071
dc.identifier.issn0169-4332
dc.identifier.urihttp://hdl.handle.net/10201/148675
dc.languageenges
dc.publisherElsevier B.V.es
dc.relationÁmbito: Europeo; European Research Council Advanced Grant ERC-2013-AdG-339228 (SEECAT); Nacional: José Castillejo, MECD, CAS17/00177. Secretaría de Estado e Investigación, Desarrollo e Innovación-SEIDI (FIS2016-76163-R), Fundación Séneca- Agencia de Ciencia y Tecnología de la Región de Murcia (19897/GERM/15)es
dc.relation.ispartofPIT2 program of the University of Murcia. “José Castillejo” from the ministry of culture MECD under the grant CAS17/00177. European Research Council Advanced Grant ERC-2013-AdG-339228 (SEECAT), Secretaría de Estado e Investigación, Desarrollo e Innovación-SEIDI (FIS2016-76163-R), Fundación Séneca- Agencia de Ciencia y Tecnología de la Región de Murcia (19897/ GERM/15), European Regional Development Fund (EU-FEDER).es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0169433219300807es
dc.rightsinfo:eu-repo/semantics/embargoedAccesses
dc.subjectDirect laser interference patterninges
dc.subjectLaser materials processinges
dc.subjectSurface structuringes
dc.subjectPolymerses
dc.subjectDiffraction gratingses
dc.subject.otherCDU::5 - Ciencias puras y naturales::53 - Física::535 - Ópticaes
dc.titleFabrication and characterization of diffraction gratings in ophthalmic polymers by using UV direct laser interference patterninges
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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