ABSTRACT
X-RAY Ptychography is a lensless and coherent X-ray diffractive imaging method that is superior to conventional and lens-based X-ray imaging in various respects. X-ray ptychography is a novel lensless imaging technique that uses the principles of X-ray imaging but acquires multiple diffraction patterns from overlapping illumination regions on the specimen. Ptychographic imaging using the water window energy range has been tested several times on fabricated and natural test objects. Ptychographic reconstructions show projection images, and more significant results about biological samples can be expected from tomographic reconstructions using many projections. Catalysts play an important role in life science, and soft X-ray ptychographic imaging provides sufficient resolution to investigate the degradation of catalyst particles. Ptychography is a variant of coherent imaging techniques that uses multiple far-field diffraction patterns from overlapping illuminations on an object. An important topic of recent research is the combination of ptychographic imaging with other techniques.
