Integrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pH: A promising sensor device for water and pH

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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.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionPRINTEX
dc.date.issued2018-10
dc.descriptionPublisher Copyright: © 2018 by the authors. Licensee MDPI, Basel, Switzerland.
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.description.statusPeer reviewed
dc.format.extent1
dc.format.extent3804560
dc.identifier.citationFrancone , A , Kehoe , T , Obieta , I , Saez-Martinez , V , Bilbao , L , Khokhar , A Z , Gadegaard , N , Delgado Simao , C , Kehagias , N & Sotomayor Torres , C M 2018 , ' Integrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pH : A promising sensor device for water and pH ' , Sensors , vol. 18 , no. 10 , 3240 , pp. 3240 . https://doi.org/10.3390/s18103240
dc.identifier.doi10.3390/s18103240
dc.identifier.issn1424-3210
dc.identifier.otherresearchoutputwizard: 11556/617
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85054544470&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofSensors
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsHydrogel
dc.subject.keywordsWaveguide
dc.subject.keywordsThermal nanoimprint lithography
dc.subject.keywordsWater sensor
dc.subject.keywordspH sensor
dc.subject.keywordsHydrogel
dc.subject.keywordsWaveguide
dc.subject.keywordsThermal nanoimprint lithography
dc.subject.keywordsWater sensor
dc.subject.keywordspH sensor
dc.subject.keywordsAnalytical Chemistry
dc.subject.keywordsInformation Systems
dc.subject.keywordsBiochemistry
dc.subject.keywordsAtomic and Molecular Physics, and Optics
dc.subject.keywordsInstrumentation
dc.subject.keywordsElectrical and Electronic Engineering
dc.titleIntegrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pH: A promising sensor device for water and pHen
dc.typejournal article
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