Accès ouvert
2026
article
OpenAlex
Gopal Prasad Khanal, Ichiro Fujii, Shintaro Ueno, Takao Sada et autres
ABSTRACT This study investigates the development of lead‐free dielectric ceramics with enhanced properties by creating a core–shell structure featuring coherent, nanoscale heteroepitaxial interfaces between the BaTiO 3 (BT) core and KNbO 3 (KN) shell. BT nanoparticles were coated with a KN shell …
jp, us
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Toshiki Okazaki, Takao Sada, Kosuke Tsuji, Yoshihiro Fujioka et autres
Abstract This paper reviews the synthesis of BaTiO3-based ceramic and composites through the cold sintering process. Cold sintering is a densification process that works with a low-temperature mechanism known as pressure solution creep. This provides several opportunities to fabricate BaTiO3 into new …
us, jp
(code pays fourni par la source)
2021
article
OpenAlex
Takao Sada, Kosuke Tsuji, Arnaud Ndayishimiye, Zhongming Fan et autres
Abstract In the design of the ceramic capacitor, high capacitance, temperature stability, and high operating voltage must be balanced against the failure mechanisms of degradation. Cold sintering is used to develop dense BaTiO3 – poly (p‐phenylene oxide) (PPO) nanocomposites with PPO throughout …
us, jp
(code pays fourni par la source)
2021
article
OpenAlex
Takao Sada, Arnaud Ndayishimiye, Zhongming Fan, Yoshihiro Fujioka et autres
The sintering of functionalized particles is an approach often used to obtain high performance functional ceramics. When molecular surfactants are used to functionalize particles, conventional sintering cannot be applied due to extremely high processing temperatures. Here, BaTiO3 particles are grafted with different …
us, jp
(code pays fourni par la source)
2020
article
OpenAlex
Takao Sada, Zhongming Fan, Arnaud Ndayishimiye, Kosuke Tsuji et autres
Abstract Cold sintering process (CSP) has attracted great interest due to its extremely low processing temperatures, fast processing times, and simplicity to allow for the densification of ceramics and composites. Understanding the detailed mechanisms underlying low temperature densification is crucial to develop …
us, jp
(code pays fourni par la source)
2020
article
OpenAlex
Takao Sada, Kosuke Tsuji, Arnaud Ndayishimiye, Zhongming Fan et autres
The dielectric property relations of a series of BaTiO3–polymer composites with a uniquely high-volume fraction of ceramic [(1 − x)BaTiO3–x polytetrafluoroethylene (PTFE), with volume fractions x = 0.025, 0.05, 0.1, and 0.2] are studied. Such high-volume fraction of the BaTiO3 phase is …
us, jp
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Takao Sada, Kosuke Tsuji, Arnaud Ndayishimiye, Zhongming Fan et autres
us, jp
(code pays fourni par la source)
Accès ouvert
2020
conference-paper
OpenAlex
Yoshihiro Fujioka, Yohei Saito, Hiroki Homma, Masatsugu IRIBE
The purpose of this research is to develop a robot which assist to harvest citrus fruits in an orchard in the Seto Inland Sea island. The robot carries the fruits between trees and monorail. During this work, the robot needs to transfer …
jp
(code pays fourni par la source)
Accès ouvert
2019
conference-paper
OpenAlex
Yoshihiro Fujioka, Yohei Saito, Hiroki Homma, Masatsugu IRIBE
This manuscript describes an assist robot to harvest citrus fruits. The purpose of the robot is to carry citrus fruits between the fruit trees and a monorail automatically. This monorail carries a container which is filled by the fruits to the base …
jp
(code pays fourni par la source)
2018
article
OpenAlex
Takao Sada, Kazuyoshi Izawa, Nobuyoshi Fujikawa, Yoshihiro Fujioka
Abstract The local insulation resistance (IR) degradation in Ni–BaTiO 3 multilayer ceramic capacitors (MLCCs) was studied, especially in the degradation stage immediately before the electrical breakdown. We named this stage the prebreakdown, which we induced by controlling electric load. We prepared four …
jp
(code pays fourni par la source)
Accès ouvert
2018
conference-paper
OpenAlex
Yoshihiro Fujioka, Yohei Saito, Masatsugu IRIBE
This research describes an assist robot which harvests citrus fruits. The robot is required to have a function of autonomously moving between a worker and a monorail which carries fruits to the foot of the mountain. However, in general, there is no …
jp
(code pays fourni par la source)
Accès ouvert
2017
article
OpenAlex
Yoshihiro Fujioka, Masakazu HONDA, Yukito Fukushima, Soichiro Ikeda et autres
In this research, we developed a “motorcycle riding skill visualization device”. While riding a motorcycle, rider's body exerts forces on several points of motorcycle. The forces by the professional riders are quite different than by the beginners. Visualization of forces gives a …
jp
(code pays fourni par la source)