Structural evolution of gold nanoclusters: From anisotropic nucleation to growth into gold quantum needles. The structures were determined by X-ray crystallography. Organic residues of the surface ligands were omitted for clarity. Color code: Au (gold): yellow; S: red. Credit: Takano et al 2025
Researchers Shinjiro Takano, Yuya Hamasaki, and Tatsuya Tsukuda of the University of Tokyo have successfully visualized the geometric structure of growing gold nanoclusters in their earliest stages. During this process, they also successfully "grew" a novel structure of elongated nanoclusters, which they named "gold quantum needles."
Thanks to their responsiveness to light in the near-infrared range, these "needles" could enable much higher-resolution biomedical imaging and more efficient light-energy conversion. The findings were published in the Journal of the American Chemical Society.
