Masaki Hada

Tsukuba Research Center for Interdisciplinary Materials Science (TREMS), University of Tsukuba
Associate professor
A03
Research AreasUltrafast phenomena, Structural dynamics
Participating Group (2020-2021)

Structural dynamics of soft crystals filmed by table-top ultrafast electron diffraction

Keywords
Time-resolved Electron Diffraction, Soft Crystal, Femtosecond Laser, Structural Dynamics

Research Outline

Ultrafast time-resolved electron diffraction is the methodology to directly observe the structural dynamics of molecules on the femtosecond (10–15 seconds) to picosecond (10–12 seconds) timescale. The researcher has developed the ultrafast time-resolved electron diffraction setup, and will observe and understand the structural dynamics of stimuli-driven phenomena of organic crystals and liquid crystals (stimuli-responsive soft crystals), such as photo-response, thermal-response, vapor-response, or mechanical response, using the relevant setup. Especially, the researcher will focus on the structural dynamics of ill-defined molecular assembles which are difficult to be analyzed with other methodologies. The obtained results lead to the creation of new stimuli-responsive molecular assembles.

Photograph of the experimental setup of ultrafast time-resolved electron diffraction
Experimental setup of ultrafast time-resolved electron diffraction
Participating Group (2018-2019)

Photoinduced phenomena of soft crystals filmed by table-top ultrafast electron diffraction

Keywords
Time-resolved Electron Diffraction, Femtosecond Laser, Structural Dynamics, Soft Crystal

Research Outline

Ultrafast time-resolved electron diffraction is the methodology to directly observe the structural dynamics of molecules on the femtosecond (10–15 seconds) to picosecond (10–12 seconds) timescale. The researcher has developed the ultrafast time-resolved electron diffraction setup, and will observe and understand the structural dynamics of light driven phenomena of organic crystals and liquid crystals (photo-responsive soft crystals) using the setup. Especially, the researcher will focus on the structural dynamics of ill-defined molecular assembles which are difficult to be analyzed with other methodologies. The obtained results lead to the creation of new photo-responsive molecular assembles.

Experimental setup of ultrafast time-resolved electron diffraction

Publications

Academic papers/reviewed

A03-18

  1. "Exploring Structures and Dynamics of Molecular Assemblies: Ultrafast Time-Resolved Electron Diffraction Measurements" M. Hada*, Y. Nishina*, T. Kato*, Accounts of Chemical Research, 54, 731-743 (2021). (Back cover)
    DOI: 10.1021/acs.accounts.0c00576
  2. “Enhancement of the mechanical and thermal transport properties of carbon nanotube yarns by boundary structure modulation” R. Shikata, H. Suzuki, Y. Hayashi, T. Hasegawa*, Y. Shigeeda, H. Inoue, W. Yajima, J. Kametaka, M. Maetani, Y. Tanaka, T. Nishikawa, S. Maeda, Y. Hayashi*, M. Hada*, Nanotechnology, Accepted.
    DOI: 10.1088/1361-6528/ac57d5
  3. “Highly Oriented Carbon Nanotube Supercapacitor” K. Komatsubara, H. Suzuki*, H. Inoue, M. Kishibuchi, S. Takahashi, T. Marui, S. Umezawa, T. Nakagawa, K. Nasu, M. Maetani, Y. Tanaka, M. Yamada, T. Nishikawa, Y. Yamashita, M. Hada, Y. Hayashi*, ACS Applied Nano Materials 5, 1521-1532 (2022).
    DOI: 10.1021/acsanm.1c04236
  4. “Tracking the light-driven layer stacking of graphene oxide.”, M. Hada*, S. Ohmura, Y. Yamamoto, Y. Kishibe, W. Yajima, R. Shikata, T. Iguchi, K. Akada, S. Yoshida, J. Fujita, S. Koshihara, Y. Nishina*, Carbon 183, 612-619 (2021).
    DOI: 10.1016/j.carbon.2021.07.058
  5. "A mechanistic investigation of moisture-induced degradation of methylammonium lead iodide" M. Hada*, M. A. A. Asad, M. misawa, Y. Hasegawa, R. Nagaoka, H. Suzuki, R. Mishima, H. Ota, T. Nishikawa, Y. Yamashita, Y. Hayashi*, K. Tsuruta*, Applied Physics Letters, 117, 253304 (2020). (Featured article, Scilight)
    DOI: 10.1063/5.0021338
  6. "Phonon transport probed at carbon nanotube yarn/sheet boundaries by ultrafast structural dynamics" M. Hada*, K. Makino, H. Inoue, T. Hasegawa, H. Masuda, H. Suzuki, K. Shirasu, T. Nakagawa, T. Seki, J. Matsuo, T. Nishikawa, Y. Yamashita, S. Koshihara, V. Stolojan, S. R. P. Silva, J. Fujita, Y. Hayashi*, S. Maeda*, M. Hase*, Carbon, 170, 165-173 (2020). （国際共著）
    DOI: 10.1016/j.carbon.2020.08.026
  7. "Liquid-like dielectric response is an origin of long polaron lifetime exceeding ten microseconds in lead bromide perovskites" K. Miyata*, R. Nagaoka, M. Hada, T. Tanaka, R. Mishima, T. Kuroda, S. Sueta, T. Iida, Y. Yamashita, T. Nishikawa, K. Tsukuta, Y. Hayashi, K. Onda, T. Kiwa, T. Teranishi, The Journal of Chemical Physics, 152 084704 (2020). (領域内共同研究 A03-01 恩田・宮田)
    DOI: 10.1063/1.5127993
  8. "One-minute Joule Annealing Enhances the Thermoelectric Properties of Carbon Nanotube Yarns via the Formation of Graphene at the Interface" M. Hada*, T. Hasegawa, H. Inoue, M. Takagi, K. Omoto, D. Chujo, S. Iemoto, T. Kuroda, T. Morimoto, T. Hayashi, T. Iijima, T. Tokunaga, N. Ikeda, K. Fujimori, C. Itoh, T. Nishikawa, Y. Yamashita, T. Kiwa, S. Koshihara, S. Maeda*, Y. Hayashi*, ACS Appl. Energy Mater., 2, 7700-7708 (2019).
    DOI: 10.1021/acsaem.9b01736
  9. "The critical role of the forest morphology for dry drawability of few-walled carbon nanotubes" H. Inoue, M. Hada, T. Nakagawa, T. Marui, T. Nishikawa, Y. Yamashita, Y. Inoue, K. Takahashi, Y. Hayashi*, Carbon, 158, 662-671 (2020). (Front cover)
    DOI: 10.1016/j.carbon.2019.11.038
  10. "Ultrafast Isomerization-Induced Cooperative Motions to Higher Molecular Orientation in Smectic Liquid-Crystalline Azobenzene Molecules" M. Hada*, D. Yamaguchi, T. Ishikawa, T. Sawa, K. Tsuruta, K. Ishikawa, S. Koshihara, Y. Hayashi, T. Kato*, Nature Commun., 10, 4159 (2019). (プレスリリース）
    DOI: 10.1038/s41467-019-12116-6

International conferences

A03-18

  1. “Light-melt adhesives: Structural design and adhesive performances”T. Konishi, Y. Nakaike, M. Hara, R. Sato, Y. Saida, W. Yajima, R. Shikata, M. Hada, S. Saito, OLC 2021 (Online, Sep. 26 – Oct. 1, 2021)
  2. “Molecular liquid crystal adhesive that melts by light: Mechanism elucidation of the photomelting function”T. Konishi, Y. Nakaike, M. Hara, R. Sato, Y. Saida, W. Yajima, R. Shikata, M. Hada, S. Saito, OLC 2021 (Online, Sep. 26 – Oct. 1, 2021)
  3. “Ultrafast collective motions induced by the photoisomerization of liquid crystalline azobenzene molecules” M. Hada, D. Yamguchi, T. Ishikawa, T. Sawa, K. Tsuruta, K. Ishikawa, S. Koshihara, Y. Hayashi, T. Kato, Pacifichem 2021 (Online, Dec. 16-21, 2021)
  4. “Ultrafast Time-Resolved Electron Diffraction Capturing Layer Stacking Dynamics of Graphene Oxide” Y. Yamamoto, S. Ohmura, Y. Kishibe, W. Yajima, R. Shikata, K. Akada, S. Yoshida, J. Fujita, S. Koshihara, Y. Nishina, M. Hada, OLC 2021 (Online, Sep. 26 – Oct. 1, 2021)
  5. “Ultrafast time-resolved electron diffraction with double-pulse-excitation applied to the light-melt adhesive based on a flapping triphenylene liquid crystal” Y. Saida, T. Konishi, R. Sato, Y. Nakaike, W. Yajima, R. Shikata, M. Hara, S. Saito, M. Hada, OLC 2021 (Online, Sep. 26 – Oct. 1, 2021)
  6. “Ultrafast collective motions of liquid-crystalline azobenzene molecules observed by ultrafast time-resolved electron diffraction” M. Hada, D. Yamaguchi, T. Kato, OLC 2021 (Online, Sep. 26 – Oct. 1, 2021)
Related Website(s)
Contact
Hada.masaki.fm@u.tsukuba.ac.jp