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Naked-Eye Biosensing using Plasmonic Nanoparticles

Since the introduction of LSPR as a transduction technique, monitoring the antibody/antigen is only possible by UV-Visible spectroscopy. Indeed, the color changes resulting from a displacement of the LSPR band during target recognition are, for spherical gold nanoparticles that often absorb around 520 nm, a few nanometers and are therefore not visible to the naked eye. Indeed, in this region of the electromagnetic spectrum, red extends over several tens of nm. A plasmon band located slightly lower in the electromagnetic spectrum would generate a much more noticeable colour change for an equivalent displacement. The combination of gold and silver in the form of an alloy or core-shell allows the position of the LSPR band to be modulated and located in the area of interest.


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      • French Electron Spectroscopy Workshop

        The third edition of the French Electron Spectroscopy Workshop will be held in Paris on January 21st-22nd, 2020. Organized by the French Vacuum Society, once again the workshop will be in close partnership with the Condensed Matter Division of the French Physical Society and in collaboration with the Surfaces and Interfaces Workshop.

        Yacine presented his Ph.D. work entitled: " Contribution of X-ray...

      • Sunny

        Sun Hur Young
        Sunny, PhD student in cotutelle with NTU Singapore, has joined our group for a year. Warm welcome!

      • Mona

        Mona SOroush
        Mona Soroush, PhD student from Teheran University has joined our group. Warm welcome!