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dc.contributor.authorFrancone, Achille
dc.contributor.authorKehoe, Timothy
dc.contributor.authorObieta, Isabel
dc.contributor.authorSaez-Martinez, Virginia
dc.contributor.authorBilbao, Leire
dc.contributor.authorKhokhar, Ali Z.
dc.contributor.authorGadegaard, Nikolaj
dc.contributor.authorDelgado Simao, Claudia
dc.contributor.authorKehagias, Nikolaos
dc.contributor.authorSotomayor Torres, Clivia M.
dc.date.accessioned2018-09-27T15:03:04Z
dc.date.available2018-09-27T15:03:04Z
dc.date.issued2018
dc.identifier.citationFrancone, Achille, Timothy Kehoe, Isabel Obieta, Virginia Saez-Martinez, Leire Bilbao, Ali Khokhar, Nikolaj Gadegaard, Claudia Simao, Nikolaos Kehagias, and Clivia Sotomayor Torres. “Integrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pH.” Sensors 18, no. 10 (September 26, 2018): 3240. doi:10.3390/s18103240.en
dc.identifier.issn1424-8220en
dc.identifier.urihttp://hdl.handle.net/11556/617
dc.description.abstractHydrogel materials offer many advantages for chemical and biological sensoring due to their response to a small change in their environment with a related change in volume. Several designs have been outlined in the literature in the specific field of hydrogel-based optical sensors, reporting a large number of steps for their fabrication. In this work we present a three-dimensional, hydrogel-based sensor the structure of which is fabricated in a single step using thermal nanoimprint lithography. The sensor is based on a waveguide with a grating readout section. A specific hydrogel formulation, based on a combination of PEGDMA (Poly(Ethylene Glycol DiMethAcrylate)), NIPAAm (N-IsoPropylAcrylAmide), and AA (Acrylic Acid), was developed. This stimulus-responsive hydrogel is sensitive to pH and to water. Moreover, the hydrogel has been modified to be suitable for fabrication by thermal nanoimprint lithography. Once stimulated, the hydrogel-based sensor changes its topography, which is characterised physically by AFM and SEM, and optically using a specific optical set-up.en
dc.language.isoengen
dc.publisherMDPIen
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleIntegrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pHen
dc.typearticleen
dc.identifier.doi10.3390/s18103240en
dc.rights.accessRightsopenAccessen
dc.subject.keywordsHydrogelen
dc.subject.keywordsWaveguideen
dc.subject.keywordsThermal nanoimprint lithographyen
dc.subject.keywordsWater sensoren
dc.subject.keywordspH sensoren
dc.issue.number10en
dc.journal.titleSensorsen
dc.page.initial3240en
dc.volume.number18en


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    Attribution 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution 4.0 International