Revisiting optical scattering with machine learning (SPARKLE)

Lead Research Organisation: Loughborough University
Department Name: Wolfson Sch of Mech, Elec & Manufac Eng


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Description We have considered the classic problem of electromagnetic scattering from the interface between two or more homogenous media. We have revisited the basic concept of Huygen's-Fresnel diffraction in 2D and 3D and have developed code to provide a rigorous solution to vector scattering.

The boundary source method that we have developed (3sBSM) represents the reflected and transmitted fields as an expansion of the electric fields generated by a basis of orthogonal electric and magnetic dipole sources that are tangential to, and evenly distributed over the surface of interest. The dipole moments required to generate these fields are then calculated according to the extinction theorem of Ewald and Oseen applied at control points situated at either side of the boundary.
Exploitation Route The code is intended to be used as part of an AI systems approach to in-process control in additive manufacturing. We have passed our 2D computer code (MATLAB) to our project partners at Nottingham University and they have shown that the basic concept is sound and they have proved the basic AI technique in practice. A detailed comparison of different scattering methods has been published and results have been disseminated at SPIE Photonics Europe, 2020 (Online Only)
Sectors Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Manufacturing, including Industrial Biotechology

Description Our research findings have been shared extensively with Zygo Corp. Connecticut USA with a view to improving the fidelity of next generation optical surface measuring instruments..
Description Revisiting optical scattering with machine learning (SPARKLE)
Amount £196,575 (GBP)
Funding ID EP/R028842/1 
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Sector Public
Country United Kingdom
Start 06/2018 
End 05/2021
Description Invited talk at MetMap (Sheffield AMRC 2019) 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Regional
Primary Audience Industry/Business
Results and Impact This was a mixed group of industrialists/academics
Year(s) Of Engagement Activity 2019