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          澳门皇冠預告:Light manipulation and optical sensing by means of all-dielectric Photonic Crystals

          日期:2017-02-21 瀏覽量:




          報告人:Emiliano Descrovi

          Department of Applied Science and Technology, Politecnico di Torino, Italy

          Emiliano Descrovi is Associate Professor in Physics at Department of Applied Science and Technology (DISAT), Politecnico di Torino, Italy since 2014 and is presentlyleading a research group operating in the field of optics and nanophotonics for biological applications, such as molecular biosensing and cell culture conditioning.  He has been recently involved in the European FP7 project BILOBA www.biloba-project.eu focused on the first prototype of an optical biosensing system operating in both label-free and fluorescence detection modes. Now he covers the role of CTO of Swiss Nano-Assay, GmbH company (Zurich, CH).

          As scientific production is concerned, Emiliano Descrovi is authors of about 70 articles in international peer-reviewed ISI journals including: Nano Letters (ACS), ACS Photonics (ACS); Scientific Reports (Nature Publishing Group), J. Phys. Chem. C (ACS). In the time slot 2005-2016 his works got over 1100 citations, resulting in an Hirsch index 21.

          He is reviewer for several high-ranking scientific journals and member of editorial boards, including Scientific Reports (Nature Publishing Group)

          Additional information can be found at this address  http://optimalaboratory.wixsite.com/optimalaboratory



          An overview of recent results on light manipulation and sensing by means of surface modes on multilayers is provided. Planar multilayers sustaining either TE or TM-polarized BSW offer new opportunities for light management at the nanoscale. BSWs can be considered as the dielectric equivalent of Surface Plasmon for metals. Compared to SPPs, BSWs present some advantages, such as low losses, long propagation lengths, polarization and spectral tunability.

          In this talk, I will show how light can be confined and propagated by means of BSW coupling, in a sort of 2D optics fashion, wherein light is flowing on an almost flat surface. In addition, I will discuss how the presence of the high photonic LDOS associated to BSW can change the emission behavior of organic dipoles located on the multilayer surface.

          Finally, dielectric multilayered structures are introduced as building blocks for disposable photonic chips for sensing applications. Some experimental configurations are illustrated wherein flat or patterned multilayers are employed for sensing in either label-free, spectroscopic or fluorescence operational modes. In particular, the possibility to enhance and control the emission from fluorescence markers on the chip surface is demonstrated to improve the detection limit in bioassays for cancer diagnostics.



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