Ponencia
Vapor and liquid optical monitoring with sculptured Bragg microcavities
Autor/es | Oliva Ramírez, Manuel
Gil Rostra, Jorge López Santos, Carmen Rodríguez González-Elipe, Agustín Yubero Valencia, Francisco |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2017 |
Fecha de depósito | 2023-02-21 |
Publicado en |
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ISBN/ISSN | 978-151061169-6 0277-786X 1996-756X |
Resumen | Sculptured porous Bragg Microcavities (BMs) formed by the successive stacking of columnar SiO2 and TiO2 thin films with zig-zag columnar microstructure are prepared by glancing angle deposition. These BMs act as wavelength ... Sculptured porous Bragg Microcavities (BMs) formed by the successive stacking of columnar SiO2 and TiO2 thin films with zig-zag columnar microstructure are prepared by glancing angle deposition. These BMs act as wavelength dependent optical retarders. This optical behavior is attributed to a self-structuration mechanism involving a fence-bundling association of nanocolumns as observed by Focused Ion Beam Scanning Electron Microscopy. The retardance of these optically active BMs can be modulated by dynamic infiltration of their open porosity with vapors, liquids or solutions with different refractive indices. The tunable birefringence of these nanostructured photonic systems have been successfully simulated with a simple model that assumes that each layer within the BMs stack has uniaxial birefringence. This type of self-associated nanostructures has been incorporated to microfluidic chips for free label vapor and liquid sensing. Several examples of the detection performance of these chips, working either in reflection or transmission configuration, for the optical characterization of vapor and liquids of different refractive index and aqueous solutions of glucose flowing through the microfluidic chips are described. |
Agencias financiadoras | Ministerio de Economia, Industria y Competitividad (MINECO). España Agencia Estatal de Investigación. España |
Identificador del proyecto | MAT2016-79866-R
CSIC 201560E055 |
Cita | Oliva Ramírez, M., Gil Rostra, J., López Santos, C., Rodríguez González-Elipe, A. y Yubero Valencia, F. (2017). Vapor and liquid optical monitoring with sculptured Bragg microcavities. En Nanostructured Thin Films X 2017 (1035603-), San Diego, USA: SPIE - The International Society for Optical Engineering. |
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