Software Suite for Electron Diffraction Simulation and Analysis
also in https://landyne.com
with a gallery of crystal structures
| CTFscope |
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The CTF is a vital function in transmission electron microscopy. We develop the CTFscope to calculate the CTF with temporal and spatial dumping envelopes for conventional TEM, and to extend to various aberrations (up to fifth order) for AC-TEM. It also includes the envelope effects on the CTF and imaging due to aperture and drifts for tutorial purposes. |
| Landyne launcher |
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Landyne launcher is a desktop dock for users to run the computer programs conveniently. A preference dialog lists three skins and all computer programs for selection. |
| Simulation and Measurement with high Accuracy of Rocking curve for crystal Thickness |
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SMART is designed for simulation and measurement in high accuracy of the rocking curve for crystal thickness. The details of the two-beam electron diffraction theory can be referred to in many books on transmission electron microscopy, e.g., electron microscopy of thin crystals by Hirsch et al. (1967) and electron microdiffraction by Spence and Zou (1992). |
| Electron Microscopy Image Processing and Analysis: General Application |
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EMIPA is provided as a convenient tool for selecting area, resizing, and rotation of experimental images. It can measure the scale bar and transfer to the area selected from the image; make an FFT pattern and an IFFT image. A series of intensity profiles on HREM images can be retrieved and compared. Square and Inscribed circle of an arbitrary length for the FFT. Varies of masks are available for inversed FFT images. Tools for adding scale bars and indices for processed images and FFT patterns. |
| High-resolution Electron Microscopy Crystallographic Image Processing (new) |
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In EMCIP, the experimental image can be enhanced with crystallographic image processing. A contrast transfer function is included for correcting the crystallographic phase in the FFT data. Experimental electron diffraction intensities can be used to replace diffraction intensities in the FFT data. The image can be processed using pre-built the17 plane symmetry groups and displayed in the pseudo-color image and contour map. |
| ElectroStatic POTential of crystal structure |
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Landyne plus ESPOT is an extension of SAED5 and QSAED5 for the calculation of atomic electrostatic (difference) potentials of a structural projection. The electrostatic potential map can be used to correlate the HR STEM image and HREM structural image; the electrostatic potential difference map can be used to improve the structural model. |
| Structure View and Analysis Tool |
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SVAT can be used for display of crystal structure in a unit-cell, including chemical bonds and magnetic moments; for the display of projection layer by layer, polyhedral clusters; and more ... |
| Simulation and Analysis of Electron Diffraction |
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SAED is calculated in kinematical and also in Bloch wave dynamical theory, simulation for composited patterns of twin and multi phases; search for zone axis of experimental pattern. |
| PolyCrystalline Electron Diffraction Simulation and Phase Identification |
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PCED is calculated in kinematic theory and also in semi-dynamical theory (Blackman theory) , including peak profile, texture, mass ratio, etc. PCED provides an easy indexing approach and is very useful for phase identification. |
| Stereographic Projection for Interactive Crystallographic Analysis |
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SPICA provides all necessary functions of stereographic projection, which can be applied to two crystal phases and generate and overlay two stereographic projections. |
| Quantification and processing of SAED (spot) Patterns |
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QSAED can be used for the preparation of experimental SAED patterns for publication. Precise measurement of the lattice spacing. Retrieval and display of the intensities of SAED patterns of crystal structures. |
| Quantification and Processing of PolyCrystalline SAED (ring) Patterns |
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QPCED provides functions, such as ellipticity correction, pattern enhancement, ring intensity profile, background subtraction, profile analysis: and peak profile. Retrieval of intensities. |
| unit-cell determination of crystal phase in TEM eXperiments |
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TEMUC is used for reciprocal lattice reconstruction and unit cell refinement in TEM experiments, Three methods are implemented, which were described in a paper by X.Z. Li, Ultramicroscopy 102 (2005) 269 and in a paper by X.Z. Li, Micron 117(2019)1 -7. Unit cell refinement was also included in TEMUC. |
| Simulation and Analysis of Kikuchi patterns with Double Diffraction effect |
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SAKI is used for Simulation and analysis of Kikuchi patterns with double diffraction effect; Flexible labels of the indices for SAED spots and Kikuchi lines; Compare with experimental SAED pattern with Kikuchi lines to find the precise orientation of the crystal phase; Compare with experimental SAED pattern to reveal the occurrence of forbidden diffraction due to the double diffraction effect. |
| Simulation of HOLZ Pattern with Correction of Dynamical Effect |
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Simulation of the higher-order Laue zone (HOLZ) lines using kinematical approximation and a first-order dynamic correction. Both CBED disk and HOLZ pattern to be displayed with convenient index label |
| Periodic table of the elements in Landyne suite |
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PTELS is a module in the Landyne software suite. It is a periodic table of elements with the information of atomic radius and molecular mass calculator. |
| A real-time logging system for automatically managing multiuser equipment |
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A real-time logging system (RTLS) has been developed for managing multiuser equipment such as modern electron microscopes that are operated or controlled via a computer. The RTLS is designed to log the usage of the computer and thus the usage of the equipment. The RTLS is a small-size Java program, which is easy to install and use. |
| Tiling Builder |
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TBuilder is used to build tilings related to decagonal quasicrystal and crystalline approximant. |
| Publication list on Landyne software suite |
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| Logbook2011 -- an electronic logbook system for multiuser laboratory management (Current version: LANDYNE RTLS) |
| ProJECT/QPCED2.6--Quantification of PolyCrystalline Electron Diffraction Pattern [M&M2011, Nashville, TN (August 7-11, 2011)] (Current version:QPCED3d) |
| ProJECT/PCED2.0--Simulation of PolyCrystalline Electron Diffraction Pattern [Ultramicroscopy, 110(2010)297] (Current version: PCED3e) |
| JECP/SP--A Computer program for generating stereographic projections, applicable to specimen orientation adjustment in TEM experiments [J. Appl. Cryst. 37(2004)506] (Current version: SPICA3b) |
| JECP/HOLZ-- Interactive HOLZ line simulation [J. Appl. Cryst. 38(2005)576] (Current version: HOLZ2t) |
| JECP/Contour--3D intensity contour map for crystallography |
| JECP/PCED--A Computer Program for Simulation of Polycrystalline Electron Diffraction Pattern and Phase Identification [Ultramicroscopy 99(2004) 257] (Current version: PCED3e) |
| JECP/ED--A Computer program for Simulation of Selected-area and Precession Electron Diffraction patterns [J. Appl. Cryst. 36(2003)956] (Current version: SAED3e) |
| Early work on computer program (1998) |
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C++ Program on Electron diffraction of Al-Mg-Zn Precipitates. HTML X.Z. Li et al. Acta mater. 47 (1999) 2651-2659. |