Workpackage 4

Investigation and implementation of fast direct solvers for general case scenarios including homogeneous, inhomogeneous, anisotropic, and chiral dielectric and magnetic materials

1. Forward dosimetry solver and terahertz far-to-near-field transformations:
   The new projective technology has been adapted into a dosimetry setting obtaining the first wideband regularization of the Steklov-Poincaré operator which has been already recognized with an Honorable mention award. Moreover the study of the pseudoinversion strategies required by the dosimetric procedures also produced innovation as we discovered a new way to inject information in the pseudoinversion process that can directly benefit from the quasi-Helmholtz projective schemes obtained in this project. The new fast schemes have been also successfully applied and pushed till terahertz frequency.
2. Impact validation and benchmarking:
   All the techniques have been validated on both canonical geometries and real case scenarios. Moreover the technology has been implemented and parallelized on the specific high performance computing hardware that has been acquired. This resulted in particularly performing computational pipeline that were capable of showing quite well the potential of the new techniques.
3. Release of an open source package making openly available all the new solvers arising from the completion of 321.
   More information about the open source code can be found here: Open Source Package