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Updated: Jun 25, 2025

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
De-MA.ch: A Web Database for Electron and X-ray Microanalysis to Assist Electron Microscope Lab Managers and Users
1Institute of Geochemistry and Petrology, ETH Zurich, Clausiusstrasse 25, Zurich 8092, Switzerland.
A new online database (https://de-ma.ch) supports scanning electron microscope and electron probe microanalyzer users with X-ray analysis data and instrument scheduling. It aids lab managers and researchers in maintaining high-quality, reproducible analyses and managing resources.
Area of Science:
- Materials Science
- Analytical Chemistry
- Geoscience
Background:
- Scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) facilities require robust documentation for X-ray analysis.
- Users need access to reference materials, spectral data, and scheduling tools for efficient operation.
Purpose of the Study:
- To present an online multilaboratory database system (https://de-ma.ch) for microanalysis.
- To provide comprehensive resources for qualitative and quantitative X-ray analyses.
- To facilitate instrument reservation and training management for multiuser facilities.
Main Methods:
- Development of an online database accessible via a web platform.
- Integration of features for reference material information, analytical setups, and X-ray data.
- Implementation of a user registration system for access to reservation and training modules.
Main Results:
- The database offers a comprehensive X-ray data library and a repository of energy- and wavelength-dispersive spectra.
- It provides information on microanalytical reference materials and characteristic X-ray data.
- The system enables management of reservation and training requests, supporting both beginner and expert users.
Conclusions:
- The online database enhances the quality, reproducibility, and efficiency of microanalyses in multiuser facilities.
- It serves as a valuable educational tool for students learning X-ray analysis techniques.
- Lab managers benefit from streamlined record-keeping of reference materials and analytical protocols.
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