1. Front Matter
2. Introduction
a. Conventional Colour Filters and Image Sensors
b. Conventional Multispectral Imaging (MI) sensor Systems
i. Prism/Beam Splitter
ii. Multilayer Coating based Filters
1. Fabry-Pérot (FP) Etalon
2. Photonic Bandgap techniquesc. Applications of MI
d. Limitations of the conventional Multispectral sensor systems
e. Summary and Conclusions
3. Nanostructured Metasurface-based Optical Filters for MI applications
a. Dielectric Guided-mode-resonance Filter (GMRF)b. Silicon Nanowire based filters
c. Metallic Plasmonic Surface Filters
i. Nanoslit Gratings
ii. Nanohole Arrays
iii. Nanoparticle Structures
iv. Metallic Apertures
d. Other techniques
e. Summary and Conclusions
4. Simulation and Fabrication Techniques for Nanoscale Metasurfaces
a. Geometry, Structures and Materials
b. Boundary Conditions
c. Meshing
d. Materials Considerations
e. Fabrication techniquesf. Summary and Conclusions
5. Transmission Enhancement in Coaxial Hole Array Based Plasmonic Color Filters
a. Introduction
b. Simulation Model and Optimization Method
c. Results and Discussiond. Summary and Conclusions
6. Single Sensor based Multispectral Sensor Examples using Metasurfaces
a. CMY Camera using Nanorod Filter Mosaic
b. Multispectral Imaging Camera using a Narrow Spectral Band Colour Mosaic
c. Hybrid Color Filtersd. Summary and Conclusions
7. Concluding Remarks