Johannes Algera is a first year PhD candidate in the space instrumentation section of the aerospace faculty of the TU Delft. He has completed a MSc also in aerospace engineering working on a novel instrument concept proposed by SRON. This instrument will measure methane emissions by using photonic crystals as spectral filters. He worked on both the characterization of photonics crystals and investigating sensitivities of the instrument. His PhD research is about developing metasurfaces for space based spectro-polarimeters. His interests include (i) design and manufacturing of metamaterials, (ii) polarimetry and (iii) spectrometry.