![Tem Diffraction Pattern Analysis Software Tem Diffraction Pattern Analysis Software](/uploads/1/2/5/4/125414136/590092647.jpg)
Crystallographic software list. ELD quantitative analysis of electron diffraction patterns. ELDIST Computer simulation of electron diffraction patterns and stereographic projections for single, twinned and two-phase crystals of any system. Contains 9 programs; 3 for electron diffraction and 6 for stereographic projections. Software for electron diffraction analysis. Indexing TEM spot diffraction patterns using CSpot (template matching). Indexing TEM spot diffraction patterns using.
Fourier transforms in detail For a tutorial on Fourier transform with images see: Loosely speaking, the Fourier transform decomposes a function into a continuous spectrum of its frequency components. A useful analogy is the relationship between a series of pure notes (the frequency components) and a musical chord (the function itself).
In mathematical physics, the Fourier transform of a signal f(x) can be thought of as that signal in the ‘frequency domain’. The Fourier transform of f(x) is defined as: Neglecting complexities in order to illustrate basic principles, the diffraction pattern from a thin specimen can be considered as the Fourier transform (FT) of the specimen. If we assume the specimen is planar with its features described as f(x,Y), where x and y are the real space coordinates of an atom, then f(x,y) represents the electron potential distribution in the sample. For this reason, where u and v are the reciprocal space analogues of x and y, so F(u,v) describes the diffraction pattern and, in this case, F(u,v)=Ff(x,y) is the FT.
The HRTEM images, in the same way, are the FT of Ff(x,y) (i.e. Diffraction pattern) and can be described as F1 (Mx,My)=F(Ff(x,y)) (Le.
![Pattern Pattern](/uploads/1/2/5/4/125414136/979928069.jpg)
HRTEM image).