Hide Takaki

Qualification

Ph.D. (Engineering)

Practice Areas

Patent
Electrical Engineering, Electronics, Software/ Chemical, Materials Science/ Mechanics, Optics

Education

Doctor of Engineering, Graduate School of Engineering, Hiroshima University
Bachelor of Engineering, Program of Mechanical systems Engineering, Hiroshima University

Work Experience

Dr. Takaki was engaged in research of photochromic materials and batteries. He received his Doctor of Engineering degree at Hiroshima University in 2022.

Research Content
(1) Dr. Takaki fabricated and analyzed zinc oxide nanostructures at the functional materials laboratory at Hiroshima University.

(2) He also worked on metal oxides that change color when irradiated with light. This phenomenon is called photochromism. He prepared metal oxides that stably exhibit photochromism, analyzed the metal oxides, and considered the mechanism of photochromism [1, 2]. Samples were prepared by sputtering or spin-coating method and analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Rutherford backscattering spectroscopy (RBS). He also explored the potential use of metal oxides exhibiting photochromism as batteries and studied the ozone-induced coloration of nickel oxide films [3].

[1] H. Takaki, S. Inoue, Y. Matsumura, Requirements for photochromism in double-layer metal oxide films, Chem. Phys. Lett. 732, 136620 (2019)
[2] H. Takaki et al., Understanding the mechanism of photochromism in double-layer metal oxide using X-ray photoelectron spectroscopy, Chem. Phys. Lett. 739, 136973 (2020)
[3] H. Takaki, S. Inoue, Y. Matsumura, Coloration-decoloration properties and mechanisms of nickel oxide films, Chem. Phys. Lett. 774, 138624 (2021)