In February 2026, Hokkaido University welcomed international students and researchers through the Japan Science and Technology Agency’s Sakura Science Exchange Program, a short-term exchange initiative designed to foster collaboration in science, technology, and innovation. 

The Sakura Science Exchange Program invites talented young researchers from around the world to experience Japan’s cutting-edge research environment while building lasting academic partnerships. 

At Hokkaido University, two distinct programs were conducted under this initiative, each offering participants hands-on learning opportunities for academic exchange in specialized fields. 

Rethinking ethical mining through technology

One program brought together eight researchers from Aksum University, Ethiopia, for a two-week collaboration focused on ethical mining and responsible mineral sourcing. As global demand for mineral resources continues to rise, the program explored how emerging technologies can help address environmental and social challenges in the mining sector.

Led by Assistant Professor Natsuo Okada of the Resource Management Laboratory in the Faculty of Engineering, Hokkaido University, participants examined how blockchain technology could improve transparency in mineral supply chains. With traditional systems often relying on fragmented and paper-based tracking, blockchain offers a secure and traceable alternative—enabling verification of mineral origins and reducing risks of fraud or unethical practices.

“It has been a very rewarding program for learning and thinking critically about this topic, with its many nuances,” said Assistant Professor Okada.  “Participants appreciated the opportunity to dive deep into the complexities of ethical mining and how technology can help address them.”

The program combined technical learning with broader discussions on governance, human rights, and environmental impact, supported by lectures from experts, including researchers from Akita University and professionals from Kushiro Coal Mine.

Left: Mr. Hiroyuki Matsumoto of Kushiro Coal Mine presented on Japan’s mining trends.
Right: Assistant Professor Ayako Watanabe of Akita University gave a lecture on human rights issues related to mining.

Field visits and hands-on training (e.g., mine modeling and digital simulations) helped participants connect theory with practice, highlighting both technological solutions and the importance of interdisciplinary approaches to more sustainable and responsible mining.

Exploring the nanoscale at the Laboratory of Topological Science and Technology

In another program, eight members of the National University of Malaysia, including students, researchers, and technical staff members, participated in hands-on training at the Laboratory of Topological Science and Technology in the Faculty of Engineering, Hokkaido University, under the guidance of Professor Koichi Ichimura.

The program focused on skill development in operating a Scanning Tunneling Microscope (STM), where participants learned to observe tunneling current signals and interpret how they translate into nanoscale surface images. The sessions also encouraged discussion, with participants sharing their own research experiences back home. 

Professor Ichimura also introduced his research on DNA oligomers using STM and scanning tunneling spectroscopy, prompting participants to reflect on how these approaches could be applied to their own work. 

In the latter half of the program, participants presented what they had learned during this program. Some described STM as a “highly advanced technology” and the program as “a highly valuable and enriching scientific experience.” Some also added that they were “brimming with ideas on how to apply the knowledge back in their home university.”

Participants presented their experiences during the program

Building connections through shared experiences

Left: Researchers of Aksum University and Assistant Professor Okada (far-right) of Hokkaido University
Right: Members of the National University of Malaysia and Professor Ichimura (center) of Hokkaido University.

Although the two programs differed in subject—ranging from resource engineering to nanoscale science—they shared a common purpose: fostering meaningful international exchange through research.

By bringing together participants from Ethiopia and Malaysia with researchers at Hokkaido University, the program created a space for dialogue, experimentation, and mutual learning. These interactions not only deepen academic understanding but also lay the groundwork for future collaborations across borders.

Photo credit: Natsuko Koyasu, PRC