Yasushi Ido

Energy Harvesting Using Large Deformable Permanent Magnet

Gakuho Oe, Tomoya TSUCHIDA, Yuhiro Iwamoto, Yasushi Ido et autres

In this study, we develop a permanent magnet capable of withstanding high loads (~2 kN) and large displacements (~50% compressive deformation). This magnet can be used to develop a battery‐free Internet of Things device. To investigate the power generation mechanism, we build …

jp (code pays fourni par la source)

Electrochemical Performance Evaluation of Water Electrolysis Enhanced by Magnetic Bubble Control Using a Water-Based Magnetic Nanofluid

Ryuto Somiya, Yuhiro Iwamoto, Yasushi Ido

Water (H₂O) is a crucial resource for sustaining human activities in space. In addition to its indispensable role in supporting life, water can be electrolyzed to produce hydrogen (H₂) and oxygen (O₂), where hydrogen serves as a propellant and oxygen supports respiration. …

jp, us (code pays fourni par la source)

Ferrohydrodynamic Control of Gas Bubble Removal in Water Electrolysis with Magnetic Nanofluids

Yuhiro Iwamoto, Ryuto Somiya, Yosuke Ishii, Yasushi Ido

Magnetic fluids are nanofluids in which ferromagnetic nanoparticles, approximately 10 nm in diameter, are stably dispersed in a carrier liquid such as water. Due to their extremely small particle size, these nanoparticles have single magnetic domains and, as a result, exhibit superparamagnetic …

jp (code pays fourni par la source)

A Self‐Healing Permanent Magnet Putty for Soft Robot Skins With Force Sensing and Functional Recovery

Ren Zhao, Mitsuhiro Kamezaki, Ryosuke Dobashi, Yuhiro Iwamoto et autres

Soft robotic skins require multifunctional materials that combine wireless sensing, adaptability, and autonomous self‐healing—capabilities not yet achieved by existing magnetorheological fluids, elastomers, or commercial magnetic putties. Here, permanent magnet putty (PMP) is presented, a dynamic polyborosiloxane–Ecoflex composite reinforced with high‐coercivity NdFeB microparticles. …

jp (code pays fourni par la source)

Damper force of a separated dual-chamber single-rod type damper using permanent magnet elastomer particles

Yasushi Ido, Yuta Suzuki, Yuhiro Iwamoto

Permanent magnet elastomer particles using in this study are spherical particles that are magnetized by dispersing neodymium fine particles in an elastomer. Damper force of a separated dual-chamber single-rod type damper using permanent magnet elastomer particles was investigated experimentally and numerically. Behavior …

jp (code pays fourni par la source)

Self-driving chracteristics of a pumpless water electrolyzer using water-based ferrofluid

Ryuto Somiya, Yuhiro Iwamoto, Yasushi Ido, Atsuyuki Mitani

The implementation of water electrolysis from lunar water sources facilitates the direct generation of hydrogen for rocket fuel and oxygen, which is essential for sustaining human life in space. Given the considerable costs associated with launching equipment into space, water electrolysis devices …

jp (code pays fourni par la source)

Solid-liquid phase transition process of water-based ferrofluid

A. A. Agao-Agao, Yasuhiko Iwamoto, Yasushi Ido, Ignat Tolstorebrov et autres

Cold thermal energy storage (CTES) technology uses advanced materials like magnetic nanofluids, also known as ferrofluids. This offers a promising solution for making cooling systems more efficient and supporting the cold chain in food preservation and medical storage. Ferrofluids are ferromagnetic particles …

Application and performance of temperature-sensitive magnetic fluid in micro-thermomagnetic pump system with series connection

Yan-Jyun Li, Yu-Chia Fan, Chih‐Yung Huang, Yasushi Ido et autres

tw, jp (code pays fourni par la source)

Flow pattern and pressure drop analysis of two-phase segmented flow driven by a thermomagnetic pump

Jun‐Yang Ji, Chih‐Yung Huang, Yasushi Ido, Yuhiro Iwamoto

tw, jp (code pays fourni par la source)

Investigation of heat transfer characteristics of the self driving temperature-sensitive magnetic fluid through a nonmagnetic porous in a heating pipe

Zhongwu Rong, Yuhiro Iwamoto, Yasushi Ido, Atsuki Mitani et autres

jp (code pays fourni par la source)

Thermal flow analysis of temperature-sensitive magnetic fluid around multiple heated bodies

Yasushi Ido, Kaito Hayashi, Yuhiro Iwamoto

jp (code pays fourni par la source)

Application of Water-Based Ferrofluid for Water Electrolysis

Yuhiro Iwamoto, Kotaro Chimura, Yasushi Ido, Yosuke Ishii et autres

A combination of renewable energies and water electrolysis has been attracting much attention as an environmentally-friendly method to produce hydrogen, which has been expected as promising future energy storage and carrier media. And micro-gravity induces the adsorption of gas-bubbles on the surface …

jp (code pays fourni par la source)