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Photonic crystals (PhCs) exhibit a strong confinement of light in a very small volume, providing local modes which are able to enhance the interaction of radiation with an analyte in an efficient optical sensing scheme. Over the years, the use of PhCs has therefore gone far beyond the realization of low-threshold lasers, low-loss resonators, optical switches, waveguides, and optical fibers, with innovative sensing designs for environmental monitoring, medical diagnosis, defense, and food quality control repeatedly envisaged (to name a few). An example is given by the on-chip integration of PhC-based sensors with microfluidics and transducing elements in biological analysis platforms or the application of field enhancement effects induced in PhCs to vibrational, Raman, and fluorescence spectroscopies.

This Special Issue will host the most recent and innovative studies in PhC-based sensing, in particular those involving the use of new emerging materials, advanced architectures, new detection mechanisms, and analytical tools mainly (but not exclusively) for applications in chemistry, biology, and medical diagnosis.

Dr. Edoardo De Tommasi
Guest Editor

 

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Keywords

  • Photonic crystal sensors and biosensors
  • Refractive-index-based photonic crystal sensors
  • Photonic crystal cavities and waveguides in optical sensing
  • Photonic crystal guided mode resonances in optical sensing
  • Optical sensing by dielectric metasurfaces
  • Field enhancement in photonic crystals for biochemical sensing
  • Nonlinear effects
  • Multiplex sensing
  • On-chip integration and lab-on-a-chip systems
  • Biomedical and clinical applications

 

https://www.mdpi.com/journal/sensors/special_issues/RAPCS