Science, Space and Technology News 2024
Researchers at the University of Sydney have developed a new microscopy method that uses atom probe tomography to observe atomic-scale changes in materials. This advancement enhances understanding of materials properties and could lead to stronger alloys for aerospace, more efficient semiconductors, and better magnets for motors.
SRO is sometimes likened to the ‘materials genome’, the arrangement or configuration of atoms within a crystal. This is significant because different local atomic arrangements influence the electronic, magnetic, mechanical, optical, and other properties of materials, which have a bearing on the safety and functionality of a range of products.
“Beyond crystal structure and symmetry, we wanted to know more about the atomic-scale neighborhood relationships within the crystal—are they random, or non-random? If the latter, we want to quantify that. SRO gives us this information in detail, opening up vast possibilities for materials that are custom-designed, atom-by-atom, with specific neighborhood arrangements to achieve desired properties like strength.
“The ability to measure and understand short-range order has transformed our approach to materials design. It gives us a new set of eyes to see how small changes at the atomic level architecture can lead to giant leaps in materials performance.”
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