Key Research Areas

Materials Characterization and Modeling

© Fraunhofer IZM
Stress measurement of a material with RAMAN spectroscopy

Electronic systems are subjected to numerous environmental influences throughout their working life. Factors such as mechanical forces, temperature fluctuations and exposure to moisture can significantly impair the reliability.  In order to optimise the reliability of complex systems in the micro/nano range it is important to understand the development of material failures. In order to be able to describe deformation, damage and fracture in materials, either alone or in combinations, it is necessary to investigate loads under the appropriate conditions. The methods of thermo-mechanical simulation are helpful here as universal tools by providing suitable failure criteria and models for the evaluation of the reliability of real components. It is then possible to draw conclusions about ways of improving their construction.

Thistopic concentrates on the following:

  • Material characterisation and modelling
  • Evaluation of reliability at interfaces, new methods of characterisation in the micro-nano transition range
  • Material simulation (multi-scale simulation, molecular dynamics)

The experimental results and the combination of the individual methods serve to validate the simulation results with real assemblies.

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More research areas relating to Materials Characterization and Modeling

Reliability of interfaces

The bonding strength between materials is very important for the evaluation of the reliability of a product. One focus therefore lies on the characterisation of interfaces of microelectronic components.

Molecular Modelling

Molecular Modelling is a simulation method used to describe the interactions of materials at the atomic level. It is used in the Micro-Nano Reliability group to investigate the properties of epoxy resins (moulding compounds, adhesives, etc.) and their boundary layers (e.g. in contact with chip surfaces).

Robustness and Life Cycle Assessment

Projects relating to Materials Characterization and Modeling

Analysis and Testing System for the Reliability Assurance of Micro- and Nanoelectronic Material Composites (TeSiMat)

In this project, a junior research group is developing techniques for the fast and accurate reliability prediction of material composites at the intersection between micro- and nano-range.