| Citation | Rodenburg is recognised as the pioneer of the imaging technique known as ptychography, performing ground breaking proof-of-principle demonstrations at optical, X-ray, and electron wavelengths. Historically, ptychography was seen as an obscure and impractical solution to the phase problem. Rodenburg recast it into a general imaging inverse problem for non-periodic objects, subsequently devising the first practical reconstruction algorithms, and many later more powerful variants. The approach is now seen to have outstanding capabilities: it does not need a lens, provides exceptional resolution, a perfect phase image, and is robust to experimental errors, noise and incoherence. His methods are now widely used, particularly for X-ray imaging using modern synchrotron sources. |