AFM - Atomic Force Microscopy of samples for environmental
• Theoretical operating principles:
-Introduction to the atomic force microscopy technique and related instrumentation for the study of the surfaces of compounds of various kinds at the nanometric scale.
• Analysis modes:
-Surface topographic analysis using Contact Mode, Tapping Mode and Peak Force Tapping (ScanAsyst in Air Mode)
-Analysis of nanomechanical properties of materials by PeakForce Quantitative Nanomechanical Property mapping (PFQNM)
-Analysis in fluid
• Instrument setup and sample preparation:
- Probe selection and installation,
- Laser alignment,
- Instrument calibration
- Optimization of scan parameters to minimize sample and probe degradation
• Analysis of materials for environmental use
- Microplastics
- Samples of corroded or degradated materials
DSC/TGA - Thermal Analysis
• Introduction to thermal analysis.
Presentation of thermal analysis and its role in the materials characterization. In-depth description of fundamental principles, including the measurement of heat changes during thermal transitions.
• Sample Preparation and Experimental Procedures.
Explain sample preparation requirements for thermal analysis, including selection of appropriate materials and containers. In-depth analysis of the main experimental parameters used, such as the heating rate and the temperature range. Step-by-step guide to setting up and running an experiment.
• Data Analysis.
Discussion of salient features of the data, such as endothermic and exothermic peaks, phase transitions, and chemical reactions. Explanation of the data analysis techniques used, such as the determination of the specific heat and the enthalpies of fusion. Practical examples of data interpretation for different applications and types of materials with particular reference to samples for environmental use.
• Interpretation of results and considerations.
Insight into the accurate interpretation of results, taking into account base effects, interferences, and method limitations. Discussion of possible sources of error and strategies to minimize them during the analysis. Exploration of the correlations between results and thermal or thermodynamic properties of materials.
