Yuma Takano

Qualification

Patent Attorney (Japan)
Ph.D. (Science)

Practice Areas

Patent
Electrical Engineering, Electronics, Software/ Mechanics, Optics

Education

Ph.D. in Science, Graduate School of Engineering Science, Osaka University
Master of Engineering, Graduate School of Engineering Science, Osaka University
Bachelor of Science, Department of Physics, The University of Tokyo

Work Experience

Two years of research experience in condensed matter physics, especially in bilayer graphene, in The University of Tokyo.
Six years of research experience in Metamaterials and Transformation Optics, one year in The University of Tokyo and five years in Osaka

Research Content
(1) Dr. Takano belonged to three laboratories at the University of Tokyo.
In the first laboratory, he studied the changes in the physical states of bilayer graphene with a twisted stacking structure. In the second laboratory, he studied the changes in the stacking structure of bilayer graphene due to the intercalation and desorption of ions [1].
In the third laboratory, he studied metamaterials: fabricating THz filters using a 3D printer and harmonic generation focusing metalens using electron beam lithography.

(2) He studied metamaterials and transformational electromagnetics at Osaka University, where he received Ph.D. He designed various media based on transformation electromagnetics and studied how to realize the designed media by using metamaterials. For example, he studied invisibility cloaks [2], dual imaging media [3], and dual-band media [4]. As another approach to realizing invisibility cloaks, he also studied the realization by using a near-zero index medium [5].

Publication
[1] R. Akiyama, Y. Takano, Y. Endo, S. Ichinokura, R. Nakanishi, K. Nomura, and S. Hasegawa, “Berry phase shift from 2π to π in bilayer graphene by Li-intercalation and sequential desorption,” Appl. Phys. Lett. 110, 233106 (2017).
[2] Y. Takano and A. Sanada, “Broadband corner cloak using a uniaxial transformation medium of stacked artificial dielectric sheets,” EPJ Appl. Metamat. 7, 4 (2020)
[3] Y. Takano and A. Sanada, “Dual Imaging Metamaterial Composed of Periodic Bi-Fold Transformation Media Made of 3D Printed TiO2 Nanoparticles Mixed Resin,” IEEE Trans. Microw. Theory Techn. 69, 3616 (2021).
[4] Y. Takano and A. Sanada, “General dual-band coordinate transformation media with full-tensor anisotropic dispersion controls,” Phys. Rev. B 104, 165115 (2021).
[5] Y. Takano, and A. Sanada, “Demonstration of Scattering Suppression by a Near-Zero-Index Metamaterial Composed of Dielectric Spheres,” IEEE Trans. Microw. Theory Techn. 66, 3921 (2018).

Membership

Japan Patent Attorneys Association (JPAA)