A multi-scale, high-resolution, tri-beam facility for fast machining and 3D characterisation

The performance and applications of advanced materials, such as aeroengine turbine blade materials, which need to operate at very high temperatures to achieve high efficiency; new energy materials such as thermal energy storage materials, lithium ion battery materials and next generation battery materials; and healthcare materials, are largely controlled by their microstructures which cover a wide range of length scales from nanometres to millimetres. To exploit existing materials and to develop new materials requires high resolution (so that very fine details can be identified), multi-scale characterisation of the microstructures (so that heterogeneous structure can be revealed) in three dimensions (3D). Developing our capability in materials characterisation is one of the most important areas for materials science and engineering. There are a range of existing 3D materials characterisation techniques including atom probe tomography, transmission electron tomography, FIB slicing and view, X-ray tomography. However there is a noticeable gap, from about 100 um to 1 mm, where current existing techniques are not able to characterise within a practical time frame. This proposal is to develop a unique multi-scale, high-resolution, tri-beam facility for fast machining and 3D characterisation. This new facility will have a femto-second laser beam, a multi-species plasma beam and a high-resolution electron beam. The femto-second laser is able to machine materials 15000 times faster than a conventional FIB. The multi-species ion plasma beam will enable the machining of a wide diversity of materials including materials for healthcare technology applications, energy materials and also aerospace materials. Alongside other detectors, the electron beam will enable high-resolution analysis of the materials prepared by the laser and plasma beams. Therefore the new facility will enable the characterisation of the chemistry, crystallography, morphology and other functional properties of materials from 100 um to 1 mm currently challenging for other characterisation techniques. The integration of a glovebox will facilitate the handling and characterisation of air-sensitive materials including battery materials. Importantly, the inert transfer device will allow transfer of materials from this instrument to other characterisation facilities such as transmission electron microscope where even higher resolution analysis can be performed. This instrument will revolutionise the materials characterisation capability and capacity in the UK leading to accelerated advanced materials and manufacturing development in many important fields including battery materials, aerospace material, energy storage, 3D printing and bio-medical materials.