title: Visual device for pressure measurement using photonic crystal slabs.
abstract: We propose and demonstrate a visual, all-optical pressure-measuring device composed of a flexible membrane dilating toward a photonic crystal slab. Due to its transparency and capability to be miniaturized, it may be integrated on the inner side of an artificial lens and directly measure the eye's intraocular pressure. Using crossed polarization filters for the readout process, we obtain a contrast enhancement for the circular contact area of the membrane with the photonic crystal slab. We demonstrate that the visible circle increases as a function of pressure.
authors.affiliation: Institute of Electrical and Information Engineering, Christian-Albrechts-Universität zu Kiel, Kiel, Germany. yn@tf.uni‑kiel.de
authors.forename: Yousef
authors.initials: Y
authors.lastname: Nazirizadeh
authors.forename: Torben
authors.initials: T
authors.lastname: Karrock
authors.forename: Martina
authors.initials: M
authors.lastname: Gerken
mesh_terms: D006801:Humans; D007429:Intraocular Pressure; D049329:Nanostructures; D055096:Optical Devices; D017785:Photons