Journal
ACS PHOTONICS
Volume 2, Issue 4, Pages 537-543Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ph500461w
Keywords
1D photonic crystals; polymer DBR; ZnO nanoparticles; optical nanocomposites; photonic crystal sensors
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Funding
- Cariplo Foundation Project PHOENICS [2009-2461]
- Italian Ministry of University and Scientific and Technological Research [2010XLLNM3]
- Nanyang Technological University [M4080538]
- Singapore Ministry of Education [MOE2013-T2-044, MOE2011-T3-1-005]
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We establish a new strategy to achieve fast and responsive hybrid distributed Bragg reflectors for environmental vapor sensing. We fabricated easily processable zinc oxide-polystyrene nanocomposites to grow high quality multilayers with large gas permeability and dielectric contrast, which enable fast and sensitive detection of vapor analytes. Multilayers fabricated by simple spin-coating of the nanocomposite and cellulose acetate show a 10-fold enhancement of the optical response to toluene exposure compared to reference distributed Bragg reflectors built with bare. polystyrene.
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