Science, Space and Technology News 2024
University of Auckland researchers have uncovered new properties of gallium, demonstrating that its covalent bonds, unique among metals, reappear at high temperatures, challenging long-held views and providing insights critical for nanotechnology and other fields.Nearly 150 years after its discovery and subsequent addition to the periodic table, gallium continues to reveal its secrets.
The new study shows that while those bonds disappear at melting point, they reappear at higher temperatures. The breakthrough came from Lambie, then a PhD student with the University and the MacDiarmid Institute, meticulously revisiting scientific literature from previous decades and comparing temperature data to piece together the complete picture.Understanding gallium’s exact processes, and especially how it changes with temperature, is important for advances in nanotechnology, where scientists manipulate matter to create new materials.
Gallium was predicted before it was discovered. When Dmitri Mendeleev, the Russian chemist, created the first periodic table in 1871, arranging the elements according to increasing atomic numbers, he left gaps for missing elements suggested by known elements.
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