How does ptychography work?

Ptychography (/t(ʌ)ɪˈkogræfi/ t(a)i-KO-graf-ee) is a computational method of microscopic imaging. It generates images by processing many coherent interference patterns that have been scattered from an object of interest.

What is electron ptychography?

Ptychography is a coherent diffractive imaging technique that can determine how an electron wave is transmitted through an object by probing it in many small overlapping regions and processing the diffraction data obtained at each point.

How do you pronounce Ptychography?

Ptychography has won accolades for the ALS recently, as researchers achieved the highest resolution ever recorded in x-ray microscopy, but what exactly is this technique with the catchy name? (For the record, it’s pronounced “tie-cog-raphee.”) We recently sat down with ALS physicist David Shapiro, lead author on the …

What are the basic principles of X ray ptychography?

In this Review, we discuss the basic principles of ptychography and summarize the rapid evolution of X-ray ptychography over the past ten years, since its first experimental appearance with X-rays.

How is ptychography a method of microscopic imaging?

Ptychography (/tʌɪˈkoʊræfi/ ti-KO-graf-ee) is a computational method of microscopic imaging. It generates images by processing many coherent interference patterns that have been scattered from an object of interest.

How did the term ptychography get its name?

‘Ptychography’ (from the Greek ‘πτυξ’, meaning ‘to fold’) was so-called because it essentially exploits a convolution in Fourier space, between the Fourier transform of a finite illumination function and the (coherent) Fourier diffraction pattern of the object.

Which is an advantage of the ptychography technique?

Another important advantage of the technique is that it allows transparent objects to be seen very clearly. This is because it is sensitive to the phase of the radiation that has passed through a specimen, and so it does not rely on the object absorbing radiation.