DataVXACS Applied Materials & InterfacesPaper
journal article·2018-10-24

Time-Resolved Analysis of Dielectric Mirrors for Vapor Sensing

Shuai Gao, Xiaofeng Tang, Stefan Langner, Andres Osvet, Christina Harreiß, Maïssa K. S. Barr, Erdmann Spiecker, Julien Bachmann, Christoph J. Brabec, Karen Forberich

ACS Applied Materials & Interfaces· Volume 10· Issue 42
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Source abstract

Abstract

Dielectric mirrors based on bilayers of polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SEBS) and poly(vinyl alcohol) (PVA)–zirconium dioxide (ZrO2) nanocomposites are fabricated for vapor sensing. When exposed to specific solvent vapor, the layers of dielectric mirrors can gradually swell and cause a red-shift of the reflection band. Because PVA solely responds to water and SEBS is sensitive to several different types of organic solvents, the mirrors can respond to a large variety of solvents. The dual-functional hydrophilic ZrO2 nanoparticles are introduced to not only enlarge the refractive index contrast but also increase the permeability. Time-resolved measurements show that mirrors with nanoparticles have a significantly faster response than those without nanoparticles. Moreover, the dependence on relative humidity is studied for representative solvents, and several types of solvents are selected to show the dependence on the solvent–polymer interaction parameters at typical relative humidity, which allows one to predict the responsivity and selectivity of the sensors.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersNanomaterials

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Acoustic Wave Resonator Technologies · Advanced Fiber Optic Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Materials for Electronics and Energy Technology (i-MEET), Department of Materials Science and Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Martensstrasse 7, 91058 Erlangen, Germany

Erlangen Graduate School in Advanced Optical Technologies (SAOT), Paul-Gordan-Strasse 6, 91052 Erlangen, Germany

Institute of Micro- and Nanostructure Research (IMN), Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 6, 91058 Erlangen, Germany

Chair of Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstrasse 4, 91058 Erlangen, Germany

Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, Petergof, 198504 Saint Petersburg, Russia

Bavarian Center for Applied Energy Research (ZAE Bayern), Immerwahrstrasse 2, 91058 Erlangen, Germany

Funding

Deutsche Forschungsgemeinschaft · China Scholarship Council

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