An overview of the different research fields TEM Gemini Centre is involved.
The TEM Geminicentre have in collaboration with Norwegian light metal industry (in particular Hydro Al) for many years been working on precipitation in 6xxx Aluminium Alloys. The motivation of the research is to understand the precipitation sequences and be able to predict properties as a function of composition and thermomechanical history of the materials. The ultimate goal is to create 'alloys by design'. Read more about Al alloys.
Alanates for hydrogen storage
In the search for alternative fuels, hydrogen is the ideal candidate as a clean energy carrier for both transportation and stationary applications. Among the various approaches for hydrogen storage, complex hydrides are seen to be the most promising group of materials. Read more about Alanates for hydrogen storage.
Our group has a long tradition in electron diffraction studies including intensity calculations and predictions, three phase invariants and quantitative convergent beam electron diffraction (QCBED) determining low order structure factors for information on bonding charge density distributions. Read more about Quantitative CBED.
Ferroelectric thin films
The overall aim of this project is to understand how the ferroelectric thin film changes with diminishing dimensions. Basic TEM is used to determine film quality (defects, degree of epitaxial growth, film thickness etc.). Advanced TEM is used for example to determine strain field and abruptness of the film substrate interface. Ferroelectric thin films.
Within the Geminicentre polymers, thin films and paint, and cellulose form the most important group of soft materials studied. We have experience with different sample preparation techniques and staining procedures. Read more about Soft materials.
Nanoscale functional oxides
0D and 1D functional oxides at nm-scale are interesting for phenomenological reasons and promising future application. Within the group materials are studied produced via simple chemical routes. The TEM investigations shed light on the growth mechanisms and resulted in process optimization. Read more about Nanoscale functional oxides.
Silicon solar cells and solar cell material
The solar cell market today experiences more than 40 % yearly growth. Shortage of clean silicon from the electronic industry forces the industry to use dirtier source material and try to find cheaper ways of producing silicon for the photovoltaic market. Read more about Silicon solar cells and solar cell material.
Skutterudites and Thermoelectricity
Skutterudites are a class of materials with the general formula RyM4X12, M being a group-9 metal, X being a pnictogen (typically P, As or Sb) and R typically being a rare earth. The past few years have seen a renewed interest in these materials due to their thermoelectric properties, making them potentially useful for decreasing the power consumption in cooling devices as well as recovering electric power from otherwise unusable waste heat. Read more about Skutterudites and Thermoelectricity.