Sumários

Electron microscopy 4

11 janeiro 2022, 16:00 • Amélia Almeida

EDS microanalysis. Spectrum analysis and element distribution maps. EBSD principles and material analysis tools. Orientation imaging maps. Specimens preparation for SEM (methods for metals, ceramics, polymers and biological materials). Conductive coating methods. Sample preparation for EBSD. TEM sample preparation methods.

Electron microscopy 3

10 janeiro 2022, 14:00 • Amélia Almeida

Transmission electron microscopy. Constitution and working principles. Contrast mechanisms in TEM (diffraction, mass and phase contrast), TEM imaging modes (bright field, dark field) and examples. Electron diffraction (spot and ring patterns). Advantages and disadvantages of TEM.

Laboratory on SEM

17 dezembro 2021, 11:00 • Amélia Almeida

Laboratory class on SEM. Observation of paracetamol samples by SEM.

Electron microscopy 2

14 dezembro 2021, 16:00 • Amélia Almeida

SEM working principles. Beam-specimen interactions. Image formation and detectors. SE and BSE image characteristics. Examples of analysis of different materials. Environmental SEM. Advantages and disadvantages of SEM.

Electron microscopy 1

13 dezembro 2021, 14:00 • Amélia Almeida

Electron microscopy. Introduction and fundamentals. Scanning electron microscopy. Magnification and resolution. Electrons vs light. Wavelength and acceleration voltage. Electron microscopes: constitution and main components.