Editor’s Note
This article highlights a significant breakthrough in materials science, where researchers from Minami-Shinshu Technical College and Shinshu University have successfully grown artificial ruby single crystals at lower temperatures. This advancement could lead to more efficient and sustainable production methods for these valuable crystals, which are crucial in various high-tech applications.

Minami-Shinshu Technical College and Shinshu University in Nagano Prefecture have successfully cultivated artificial ruby single crystals at low temperatures.
This achievement is expected to contribute to reduced environmental impact and simplified production equipment.
