Scientists from the United States have successfully replicated an ancient method of processing gold at the nano-level, transforming tiny gold ingots into 2D sheets. The technique, known as GoldBeating, was originally developed by Egyptian masters over five thousand years ago. This method allowed for the decoration of artificial objects and jewelry in various cultures, including the tombs of Thebes and Sakkara.
Today, gold at the nano-level is not only used for decorative purposes, but also plays a vital role in areas such as microelectronics and nanomedicine.
Michael Tsai Wang, a professor at the University of South Florida and co-author of articles in the journal Pnasas Nexus, explained their inspiration for the project: “We were inspired by the idea of engaging in an ancient craft for modern nanopharyngeal processes. The ability to create 2D thin films from nanoparticles opens up new horizons in nanotechnology and material science.”
The study conducted by Wang and his team has the potential to contribute to the development of a wide range of nanocrystals and nanometals. This, in turn, could lead to future applications in renewable energy, quantum calculations, and computation.
MD Rubayyat-e Tandzhil, the first author of the study, emphasized that this solid transformation technique is not limited to gold and further applications are possible.
The study revealed that the 2D forms of gold leaves obtained are influenced by various factors, including the original shape, size, and arrangement of the nanoparticles. The malleability of gold enables precise control over the shape, size, and thickness of the resulting 2D gold sheets.
Researchers emphasize that their work not only advances our understanding of nanomaterials, but also highlights the enduring allure of gold and its historical significance.