Laboratory members | Nakase Laboratory, Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Science Tokyo

Science Tokyo

Masahiko NAKASE

Please see the top of the member page for the profile.

Science Tokyo

Masahiko NAKASE

Please see the top of the member page for the profile.

Asscociate Professor

Masahiko NAKASE

Please see the top of the member page for the profile.

Specially Appointed Associate Professor

Ayumi ITOH

I have researched to investigate the severe accident phonomena at Fukushima Daiichi Nuclear Power Station, especially the core degradation and fuel debris formation mechanism by experimenal and computational way. Main experimental works are in-situ investigation of materials interaction at the synchrotron radiation facility, and quenching of high-temperature liquid alloys under severe accident condition. Computational works are the mass and heat transfer analysis coupling with thermodyanmic data. Recently, I am trying the ab-initio calculation for the fuel materials. I am very happy to join Nakase lab. Let's enjoy the research life with us!

Specially Appointed Assistant Professor

Tomohiro OKAMURA

I used to work at Hitachi Inc. after graduating from the Ph.D. program at Tokyo Tech in 2022. I decided to join this laboratory in 2023 and devote myself to future nuclear energy systems. My research focused on the optimization and integration of nuclear energy systems. In addition, I am conducting research on nuclear energy, blockchain technology, and machine learning. The project director of NEUCHAIN. My hobby is muscle training, and I participated in bodybuilding competitions. Call me Dr. Norkin!

Science Tokyo

Tomohiro OKAMURA

I used to work at Hitachi Inc. after graduating from the Ph.D. program at Tokyo Tech in 2022. I decided to join this laboratory in 2023 and devote myself to future nuclear energy systems. My research focused on the optimization and integration of nuclear energy systems. In addition, I am conducting research on nuclear energy, blockchain technology, and machine learning. The project director of NEUCHAIN. My hobby is muscle training, and I participated in bodybuilding competitions. Call me Dr. Norkin!

Researcher

Alaaeldine Shaker Mohammed SALEH

I am a researcher from Egypt. Recently, I have been awarded a JSPS Invitational Fellowship for Research in Nakase Laboratory. My research activities include chemical separation of metals using solvent extraction and ion exchange techniques. Yet, I am a chemist who loves the Earth, and sointerested in environmental chemistry, especially radionuclide–mineral interactions. My ambition is to engage with research colleagues of diverse backgrounds to conduct research which adds to our capacity of metals extraction and waste treatment for protection of the environment. My hobbies are walking and nature sightseeing.

Researcher

Fauzia Hanum IKHWAN

Hello, I'm Fauzia Hanum Ikhwan, call me zia. I am originally from Indonesia. I enrolled in master’s and doctoral courses at Nagaoka University of Technology (Professor Tatsuya Suzuki, Radiochemistry Laboratory). During my doctoral program, I developed actinides (U, Th, Pu, Am, Cm) separation technology for analyzing radioactive waste for two and a half years as a research student at the Japan Atomic Energy Agency (JAEA). I joined Nakase laboratory in July 2023 and currently focus on synthesizing extractants. My hobbies are cooking, gardening, and exploring new places, and I love food.

Researcher

Toshihiko OHNUKI

I am interested in the change in the chemical state of elements at the solid-liquid interface, and I am studying cations and anions. Recently, I have been paying close attention to the nuclear fuel cycle and hydrogen energy, metal resources, and environmental organic matter pollution. My hobbies are sports such as tennis and golf.

Researcher

Ryota NAKAZAWA

My role is to conduct high temperature experiment to estimate formation mechanism of debris in Fukushima Daiich Nuclear Power Station. I proceed with my work while consulting with Dr. Itoh. In my doctoral thesis, I researched on thermodynamics of simulant debris.

Researcher

Yuko SUZUKI

My responsibilities are conducting chemical analyses, compiling data, and having discussions. I recently started to play the musical instrument, and I'm sharing my practice sessions on YouTube. My initial goal is to attain 1000 subscribers!

Researcher

Gagad RAHMADI

I am Gagad Rahmadi, a researcher from Indonesia, currently affiliated with the National Research and Innovation Agency of Indonesia (BRIN) and working at the Research Centre for Nuclear Fuel and Radioactive Technology.
I have been awarded the MEXT Research Exchange Program to conduct research related to nuclear fuel cycle scenarios in Nakase Laboratory. With a background in nuclear engineering, I am deeply passionate about exploring innovative solutions to enhance the sustainability and efficiency of nuclear energy systems. My current work in Indonesia is closely aligned with this research focus, reinforcing my commitment to advancing nuclear fuel technologies.
My ambition is to collaborate with researchers from diverse disciplines to contribute to a cleaner, more sustainable future. My consistent hobby? Converting oxygen to carbon dioxide—whether through deep thought or lighthearted breathing!

Researcher

Takahiro NISHIHARA

I am interested in computers and research acceleration of computation by sensor networks and machine learning in information engineering. In addition, I conducted research to statistically and quantitatively capture and systematize vague areas such as corporate organization and inner branding. From the beginning, I wanted to work on the center pin of social issues, and in the age of AI and space, I reaffirmed the importance of nuclear energy as infrastructure and the chemical field. Currently, I work on semi-interdisciplinary research in nuclear power (nuclear power and distributed ledger, chemistry and machine learning, etc.). My hobbies are trail running, exercise, games, and making music.

Science Tokyo

Takahiro NISHIHARA

I am interested in computers and research acceleration of computation by sensor networks and machine learning in information engineering. In addition, I conducted research to statistically and quantitatively capture and systematize vague areas such as corporate organization and inner branding. From the beginning, I wanted to work on the center pin of social issues, and in the age of AI and space, I reaffirmed the importance of nuclear energy as infrastructure and the chemical field. Currently, I work on semi-interdisciplinary research in nuclear power (nuclear power and distributed ledger, chemistry and machine learning, etc.). My hobbies are trail running, exercise, games, and making music.

Research Assistant

Sumiko OTAKI

My role involves creating research-related documents, composing proposals, and assisting with diverse coordination duties for Dr. Nakase. The daily inspiration from everyone in the lab is truly motivating! I'm committed to providing my utmost support. Outside of work, I enjoy observing jellyfish in aquariums. I also love to eat the jellyfish cold dish.

Specifically Assigned Technical Staff (Secretary)

Chisato IMAI

My primary responsibility involves expense and funding management and their related affairs. I am happy to be a member of a rapidly expanding new laboratory, and I am getting much inspiration from the dairy works.
My hobbies are watching stage performances (particularly ballet, roughly once a month), pottery painting (I actively contribute as a facilitator for group exhibitions), and arts (from ancient eras to modern times). Lastly, I take great pleasure in savoring delectable cuisine and fine wines.

Specifically Assigned Technical Staff (Web, DX)

Chie IGUCHI

My responsibilities are managing the laboratory's homepage, promoting administrative applications, and IT. I am dedicated to being of service, motivated by the power and knowledge of Nakase Lab’s team.
I dream of resuming my visits to izakayas in many places and attending live performances by my favorite artists.

M1
(Department of Transdisciplinary Science and Engineering, School of Environment and Society)

Kouki ONO

I am Kouki Ono, a member of the Nakase Lab since 2024. At undergraduate school, I studied laser physics. I have been helped a lot by various people. From now on, I want to return the favour little by little and become a person who can help others.
My hobby is travelling, especially drinking and eating local food.

Research Student
(Department of Transdisciplinary Science and Engineering, School of Environment and Society)

Taiga SUZUKI

I joined the Nakase Lab in December 2023 and completed my bachelor's degree in September 2024. I am conducting research on quantitative evaluation using NMB4.0. I am interested not only in nuclear engineering itself but also in how to implement technology in society.
Besides classes and research at the university, I've been contributing to projects like crafting a PR magazine and supporting international students. On my days off, I usually stay at home reading books or playing the piano.

D1
(Department of Transdisciplinary Science and Engineering, School of Environment and Society)

Andika Putra DWIJAYANTO

My name is Andika Putra Dwijayanto, just call me Andika. I am a Doctoral student in Nakase Laboratory, planning to research about closed nuclear fuel cycle using molten salt reactor. Although I am primarily a reactor physicist, I'm also interested in nuclear fuel cycle, especially to ensure its sustainability for humanity's prosperity and minimising the radioactive waste as low as possible. My hobby is reading and writing, sometimes cooking. And I love spicy food!

M1
(Department of Transdisciplinary Science and Engineering, School of Environment and Society)

Ahid NURMANJAYA

Hello, I am Ahid Nurmanjaya. I am a Master Student. I joined in Fall 2024. I came from Indonesia. I have involved in several researchs especially in Research Reactor Utilization for medicine and industry. My hobby is playing video games, watching movies, travelling and tasting food. I am not really good at sports. But I love to do it anyway.

Group Leader / Japan Atomic Energy Agency

Kenji NISHIHARA

Our team is actively engaged in the development of diverse assessment codes under the banner of NMB. These codes empower individuals to quantify potential future nuclear power generation scenarios through various choices. This fosters an environment where informed discussions are grounded in numerical data. You can find further information on NMB framework research topics at https://nmb-code.jp/.
Moreover, my regular place of work is the Japan Atomic Energy Agency located in Tokai-mura, Ibaraki Prefecture. Here, I am dedicated to research concerning the accelerator-driven nuclear transmutation system (ADS). Outside of my professional commitments, I enjoy gardening at my Tokai-mura residence.

Program- Specific Professor /
Japan Atomic Energy Agency

Kenji NISHIHARA

Our team is actively engaged in the development of diverse assessment codes under the banner of NMB. These codes empower individuals to quantify potential future nuclear power generation scenarios through various choices. This fosters an environment where informed discussions are grounded in numerical data. You can find further information on NMB framework research topics at https://nmb-code.jp/.
Moreover, my regular place of work is the Japan Atomic Energy Agency located in Tokai-mura, Ibaraki Prefecture. Here, I am dedicated to research concerning the accelerator-driven nuclear transmutation system (ADS). Outside of my professional commitments, I enjoy gardening at my Tokai-mura residence.

Japan Atomic Energy Agency

Takumi ABE

I am involved in the development of the nuclear fuel cycle simulator NMB4.0.
Additionally, I have been working on the nuclear design of accelerator-driven nuclear transmutation systems aimed at reducing radioactive waste. Our goal is to create a platform using NMB4.0 that enables discussions on the nuclear fuel cycle across various specialized fields, fostering an all-Japan collaborative approach.
During my days off, I enjoy cycling at Hitachi Seaside Park and taking photographs of seasonal flowers.

Japan Atomic Energy Agency

Akito OIZUMI

I am currently engaged in the non-proliferation assessment of next-generation nuclear fuel cycles. Within my team, I am responsible for implementing non-proliferation assessment capabilities into NMB.
Additionally, leveraging my experience in reactor physics research, including burnup calculations, integral evaluations of nuclear data, and reactor physics experiments, I have also been involved in the validation of the burnup calculation component of NMB4.0.
I am now contemplating resuming my hobby of traveling in the near future.

Science Tokyo

Kenji TAKESHITA

Specially Appointed Professor

Tadashi NARABAYASHI

After graduating from the Department of Nuclear Engineering at the Graduate School of Science and Engineering, Tokyo Institute of Technology, I began a career at Toshiba's Nuclear Technology Research Institute. Subsequently, I assumed the manager role at the Power and Social Systems Technology Development Center.
In 2018, I was designated a specially appointed professor at Tokyo Tech's Institute of Innovative Research, a role I continue to hold to this day. My fields of specialization encompass nuclear reactor engineering, reactor safety engineering, gas-liquid two-phase flow, energy, environment, and maintenance engineering.

Program-Specific Professor/
Nuclear Environmental Improvement Promotion and Fund Management Center

Hidekazu ASANO

The objective is to minimize the disposal burden of radioactive waste by unifying the entire nuclear power framework. This entails categorizing processes, devising formulations, conducting comprehensive simulations, and conducting extensive safety assessments of the disposal system over the long term. Notably, this research stands out due to its broad scope of evaluation and its prolonged assessment timeframe.
Outside of work, I engage in farming activities at home during weekends. My goal is to yield a harvest of over 500g of Ootama Natsu Mikan (Summer Orange from Ootama)

Program- Specific Professor /
Japan Atomic Energy Agency

Tatsuro MATSUMURA

Program- Specific Professor /
Central Research Institute
of Electric Power Industry

Tadafumi KOYAMA

Program- Specific Professor /
Central Research Institute
of Electric Power Industry

Masatoshi IIZUKA

I began researching molten salt chemistry during my student days and have been involved in the development of technologies related to dry reprocessing of nuclear fuel and fast reactor metallic fuel cycles at the Central Research Institute of Electric Power Industry. Currently, I work at the Central Research Institute, where I develop and promote research projects focused on envisioning Japan's future energy system, primarily in the upstream areas of electricity generation, including nuclear and thermal power, energy conversion between electricity and chemicals, and harmonization with renewable energy sources.

Program- Specific Professor /
Central Research Institute
of Electric Power Industry

Tsuyoshi MURAKAMI

Specially Appointed Expert

Kazuo UTSUMI

Administrative Support Staff (Secretary)

Ikuyo MIMURA

April 2005 - March 2009	Undergraduate program, Tokyo Institute of Technology, Department of Mechanical Science (Prof. Ken Okazaki Lab.)
April 2009 - March 2011	Master Program, Tokyo Institute of Technology, Graduate School of Science and Engineering, Department of Nuclear Engineering (Prof. Masaki Saito Lab.)
April 2011 - March 2014	Doctoral program at Tokyo Institute of Technology, Department of Nuclear Engineering, Graduate School of Science and Engineering, (Prof. Kenji Takeshita Lab.)
April 2014 - March 2017	Postdoctoral Fellow of Japan Society for the Promotion of Science Research Actinide Coordination Chemistry Research Group, Atomic Energy Agency (Prof. Tsuyoshi Yaita Lab.)
April 2017 - May 2018	Research Fellow of JSPS for Research Abroad, Idaho National Laboratory, Actinide Separations and Radiochemistry Department (Dr. Bruce J. Mincher)
June 2018 - March 2019	Assistant Professor, Nuclear Fuel Cycle Research Unit, Institute of Innovative Research, Tokyo Institute of Technology (Takeshita Lab.)
April 2019 - March 2023	Assistant Professor, Tokyo Institute of Technology Institute of Innovative Research Institute for Advanced Nuclear Energy (Takeshita Lab.)
April 2023 - Present	Associate Professor, Tokyo Institute of Technology, Institute of Innovative Research, Zero Carbon Energy Laboratory, Fukushima Revitalization Research Unit