Optical Biosensors Based on Photonic Crystals Supporting Bound States in the Continuum

Optical Biosensors Based on Photonic Crystals Supporting Bound States in the Continuum

A novel optical label-free bio-sensing platform based on a new class of resonances supported in a photonic crystal metasurface is reported herein. Molecular binding is detected as a shift in the resonant wavelength of the bound states in the continuum of radiation modes. The new configuration is app...

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Bibliographic Details
Main Authors: Silvia Romano, Annalisa Lamberti, Mariorosario Masullo, Erika Penzo, Stefano Cabrini, Ivo Rendina, Vito Mocella
Format: Article
Language:English
Published: MDPI AG 2018-03-01
Series:Materials
Subjects:
photonic crystal
bound states in the continuum
biosensors
protein interaction
Online Access:http://www.mdpi.com/1996-1944/11/4/526
Description
Summary:A novel optical label-free bio-sensing platform based on a new class of resonances supported in a photonic crystal metasurface is reported herein. Molecular binding is detected as a shift in the resonant wavelength of the bound states in the continuum of radiation modes. The new configuration is applied to the recognition of the interaction between protein p53 and its protein regulatory partner murine double minute 2 (MDM2). A detection limit of 66 nM for the protein p53 is found. The device provides an excellent interrogation stability and loss-free operation, requires minimal optical interrogation equipment and can be easily optimized to work in a wide wavelength range.
ISSN:1996-1944

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