Mr. XIONG, Wei (3rd-year doctoral student in Oshima Lab, Nanomaterials and Devices Research Area) received the Student Award at the 10th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies（EM-NANO 2025）.

EM-NANO 2025 is an international symposium on organic and inorganic electronic materials and related nanotechnologies. It was held from June 11 to 14, 2025, at AOSSA (Fukui Prefectural Hall) in Fukui, Japan.
At the symposium, in addition to plenary lectures, invited lectures, and special sessions, a ceremony was held to commemorate the 10th anniversary of the symposium. The event featured lively discussions on the latest research developments in the field of electronics.

＊Reference：EM-NANO 2025

■Date Awarded
June 14, 2025

■Title
Interlayer fracture of multilayer MoS₂ evaluated by in situ transmission electron microscopy

■Authors
Wei XIONG, Lilin XIE, Yoshifumi OSHIMA

■Abstract
We observed the fracture process of multilayer MoS₂ nanosheets during tensile deformation using in-situ transmission electron microscopy (TEM) and revealed a new interlayer fracture mechanism. Cracks propagated along the zigzag edges of different layers, forming step structures due to weak interlayer interactions and friction. These findings challenge previous computational simulations regarding interlayer bonding in MoS₂ and provide new insights into the mechanical properties and reliability of two-dimensional materials for applications in nanoelectronics and flexible devices.

■Comment
It is my great honor to receive the "Student Award" at EM-NANO 2025. The recognition from the EM-NANO 2025 committee for my research and presentation has greatly encouraged me to continue exploring the intrinsic properties of 2D materials. I feel fortunate to have successfully built a stable platform for atomic-resolution in situ tensile experiments. However, this achievement would not have been possible without the invaluable support and guidance of my supervisor, Prof. Yoshifumi Oshima, to whom I would like to express my deepest gratitude. I would also like to thank Dr. Lilin Xie, whose research provided both confidence and convenience during my work. In addition, I sincerely appreciate the help and support from Senior Lecturer Kohei Aso and all the laboratory members, both in my research and daily life.

July 17, 2025