RIKEN Center for Emergent Matter Science Materials Characterization Support Team

Team Leader: Daisuke Hashizume (D.Sc.)

Japanese Page

Research Summary

Our Team provides research support by means of X-ray crystal structure analysis, electron microscopy, and elemental analysis. In addition to supporting on the individual method, we give multifaceted research support by combining these methods. To give analyses of the highest level quality to researchers, we always update our knowledge and make training in our skills. We make　collaboration with researchers, not only we perform merely routine works, to achieve purposes of their research and to provide new insights on the research through discussion based on the results. We also challenge to develop unexplored measurement methods aiming at more advanced and sophisticated analysis.

Main Research Fields

Chemistry

Related Research Fields

Complex Systems
Interdisciplinary Science & Engineering
Mathematical & Physical Sciences
Engineering

Keywords

Structure analysis
X-ray diffraction
Electron microscope
Chemical analysis
Structure analysis of device

Selected Publications

1. He, D., Adachi, K., Hashizume, D., and Nakamura, R.:
"Copper sulfide mineral performs non-enzymatic anaerobic ammonium oxidation through a hydrazine intermediate"
Nat. Chem., 16, 1605 (2024).
2. Li, A., Kong, S., Adachi, K., Ooka, H., Fushimi, K., Jiang, Q., Ofuchi, H., Hamamoto, S., Oura, M., Higashi. K., Kaneko, T., Uruga, T., Kawamura, N., Hashizume, D., and Nakamura, R.:
"Atomically dispersed hexavalent iridium oxide from MnO₂ reduction for oxygen evolution catalysis"
Science, 384, 666 (2024).
3. Kong, S., Li, A., Long, J., Adachi, K., Hashizume, D., Jiang, Q., Fushimi, K., Ooka, H., Xiao, J., and Nakamura, R.:
"Acid-stable manganese oxides for proton exchange membrane water electrolysis"
Nat. Catal., 7, 252 (2024).
4. Wang, J., Ochiai, Y., Wu, N., Adachi, K., Inoue, D., Hashizume, D., Kong, D., Matsuhisa, N., Yokota, T., Wu, Q., Ma. W., Sun, L., Xiong, S., Du, B., Wang, W., Shih, C.-J., Tajima, K., Aida, T., Fukuda, K., and Someya, T.:
"Intrinsically stretchable organic photovoltaics by redistributing strain to PEDOT:PSS with enhanced stretchability and interfacial adhesion"
Nat. Commun., 15, 4902 (2024).
5. Xiong, S., Fukuda, K., Nakano, K., Lee, S., Sumi, Y., Takakuwa, M., Inoue, D., Hashizume, D., Du, B., Yokota, T., Zhou, Y., Tajima, K., and Someya, T.:
"Waterproof and ultraflexible organic photovoltaics with improved interface adhesion"
Nat. Commun., 15, 681 (2024).
6. Nogami, J., Hashizume, D., Nagashima, Y., Miyamoto, K., Uchiyama, M., and Tanaka, K.:
"Catalytic stereoselective synthesis of doubly, triply and quadruply twisted aromatic belts"
Nat. Synth., 2, 888 (2023).
7. Ueda, K., Yu, T., Hirayama, M., Kurokawa, R., Nakajima, T., Saito, H., Kriener, M., Hoshino, M., Hashizume, D., Arima, T.-h., Arita, R., and Tokura, Y.:
"Colossal negative magnetoresistance in field-induced Weyl semimetal of magnetic half-Heusler compound"
Nat. Commun., 14, 6339 (2023).
8. Takagi, H., Takagi, R., Minami, S., Nomoto, T., Ohishi, K., Suzuki, M. -t., Yanagi, Y., Hirayama, M., Khanh, N. D., Karube, K., Saito, H., Hashizume, D., Kiyanagi, R., Tokura, Y., Arita, R., Nakajima, T., and Seki, S.:
"Spontaneous topological Hall effect induced by non-coplanar antiferromagnetic order in intercalated van der Waals materials"
Nat. Phys. 19, 961 (2023).
9. He, D., Ooka, H., Li, Y., Kim, Y., Yamaguchi, A., Adachi, K., Hashizume, D., Yoshida, N., Toyoda, S., Kim, S. H., and Nakamura, R.:
"Regulation of the electrocatalytic nitrogen cycle based on sequential proton-electron transfer"
Nat. Catal., 5, 798 (2022).
10. Li, A., Kong, S., Guo, C., Ooka, H., Adachi, K., Hashizume, D., Jiang, Q., Han, H., Xiao, J., and Nakamura, R.:
"Enhancing the stability of cobalt spinel oxide towards sustainable oxygen evolution in acid"
Nat. Catal. 5, 109 (2022).

Lab Members

Principal investigator

Daisuke Hashizume: Team Leader

Core members

Keiko Suzuki: Senior Technical Scientist
Daishi Inoue: Expert Technician
Kiyohiro Adachi: Technical Staff I
Mohamed Arfaoui: Technical Staff I

Contact Information

2-1 Hirosawa, Wako, Saitama
351-0198 Japan
Email: hashi [at] riken.jp