dc.contributor.author | Francone, Achille | |
dc.contributor.author | Kehoe, Timothy | |
dc.contributor.author | Obieta, Isabel | |
dc.contributor.author | Saez-Martinez, Virginia | |
dc.contributor.author | Bilbao, Leire | |
dc.contributor.author | Khokhar, Ali Z. | |
dc.contributor.author | Gadegaard, Nikolaj | |
dc.contributor.author | Delgado Simao, Claudia | |
dc.contributor.author | Kehagias, Nikolaos | |
dc.contributor.author | Sotomayor Torres, Clivia M. | |
dc.date.accessioned | 2018-09-27T15:03:04Z | |
dc.date.available | 2018-09-27T15:03:04Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Francone, 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.issn | 1424-8220 | en |
dc.identifier.uri | http://hdl.handle.net/11556/617 | |
dc.description.abstract | Hydrogel 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.iso | eng | en |
dc.publisher | MDPI | en |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.title | Integrated 3D Hydrogel Waveguide Out-Coupler by Step-and-Repeat Thermal Nanoimprint Lithography: A Promising Sensor Device for Water and pH | en |
dc.type | journal article | en |
dc.identifier.doi | 10.3390/s18103240 | en |
dc.rights.accessRights | open access | en |
dc.subject.keywords | Hydrogel | en |
dc.subject.keywords | Waveguide | en |
dc.subject.keywords | Thermal nanoimprint lithography | en |
dc.subject.keywords | Water sensor | en |
dc.subject.keywords | pH sensor | en |
dc.issue.number | 10 | en |
dc.journal.title | Sensors | en |
dc.page.initial | 3240 | en |
dc.volume.number | 18 | en |