Diffraction problem Electromagnetic response 6 Algae 4 Aquatic organisms 4 Biomimetics 4 Diffraction 4 Diffraction gratings 4 Micro-algae 4 Natural photonic crystals 4 Nonlinear polarizations 4 Nonlinear susceptibilities 4 Protozoa 4 Reflection 4 UV protection 4 Ultraviolet radiation 4 A-plane 2 Arbitrary profile 2 Cell membranes 2 Compound structures 2 Corrugated surfaces 2 Cytology 2 Degrees of freedom (mechanics) 2 Dielectric interface 2 Dual-period structures 2 Efficiency 2 Electromagnetic wave polarization 2 Electromagnetism 2 Enhanced transmission 2 Fabry-Perot interferometers 2 Free electron models 2