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Physics colloquium - PUC-Rio - Prof. Romain Quidant, ETH-Zürich
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September 17, 2021
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Nanophotonics: an enabling tool for basic research and technology
Twenty years of extensive research in nanophotonics have considerably advanced light control on the nanometer scale, offering solutions in both basic and applied research. In this talk, following a general introduction on the main assets of optical nanoresonators, we will review different aspects of our research where they benefit a wide range of scientific disciplines from biotechnology and imaging to additive manufacturing. The first part of the talk focuses on the combination of nanophotonics and state-of-the-art microfluidics for the detection of molecular biomarkers in biological samples. A direct comparison of plasmonic and dielectric nanoresonators is presented. Beyond quantitative concentration recovery, we demonstrate the capability to detect the chirality of the molecular analyte. In the second part we introduce our recent effort in the development of reconfigurable planar optical elements. In particular, we discuss several technologies which enable to dynamically control the phase front of the transmitted light via either electrical or optical control. The last part of the talk introduces novel applications of thermoplasmonics, i.e., the nanoscale control of heat based on enhanced absorption in resonant plasmonic nanoparticles. In particular, we will discuss how plasmon-based light-to-heat conversion can be used in disinfection and additive manufacturing.
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Thanks Romain, for the excellent talk!
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Nanophotonics: an enabling tool for basic research and technology
Twenty years of extensive research in nanophotonics have considerably advanced light control on the nanometer scale, offering solutions in both basic and applied research. In this talk, following a general introduction on the main assets of optical nanoresonators, we will review different aspects of our research where they benefit a wide range of scientific disciplines from biotechnology and imaging to additive manufacturing. The first part of the talk focuses on the combination of nanophotonics and state-of-the-art microfluidics for the detection of molecular biomarkers in biological samples. A direct comparison of plasmonic and dielectric nanoresonators is presented. Beyond quantitative concentration recovery, we demonstrate the capability to detect the chirality of the molecular analyte. In the second part we introduce our recent effort in the development of reconfigurable planar optical elements. In particular, we discuss several technologies which enable to dynamically control the phase front of the transmitted light via either electrical or optical control. The last part of the talk introduces novel applications of thermoplasmonics, i.e., the nanoscale control of heat based on enhanced absorption in resonant plasmonic nanoparticles. In particular, we will discuss how plasmon-based light-to-heat conversion can be used in disinfection and additive manufacturing.
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Thanks Romain, for the excellent talk!
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