31 Result(s)

Article

Drag force on a microrobot propelled through blood

Controlling microrobot locomotion in vessels and capillaries is crucial for precise drug delivery and minimally invasive surgeries. However, this is challenging due to the complex interactions with red blood c...

Chenjun Wu, Toshihiro Omori, Takuji Ishikawa in Communications Physics (2024)

Article

Experimental Determination of Phase Equilibria in the Mn-Zn Binary System

Phase equilibria in the Mn-Zn binary system were experimentally determined by chemical composition examination, crystal structure determination, and thermal analysis. Major changes were detected for the β, ε, and...

Daisuke Imatomi, Ryosuke Ishikawa… in Journal of Phase Equilibria and Diffusion (2024)

Article

Non-Hookean large elastic deformation in bulk crystalline metals

Crystalline metals can have large theoretical elastic strain limits. However, a macroscopic block of conventional crystalline metals practically suffers a very limited elastic deformation of <0.5% with a linea...

Sheng Xu, Takumi Odaira, Shunsuke Sato, **ao Xu, Toshihiro Omori… in Nature Communications (2022)

Article

Melting Point of Pure Cr and Phase Equilibria in the Cr-Si Binary System

The melting point of pure Cr and phase equilibria in the Cr-Si binary system were determined by thermal analysis using a differential scanning calorimeter (DSC) and differential thermal analyzer (DTA). In addi...

Kazushige Ioroi, Yuki Aono, **ao Xu… in Journal of Phase Equilibria and Diffusion (2022)

Article

Machine learning assisted design of γ′-strengthened Co-base superalloys with multi-performance optimization

Designing a material with multiple desired properties is a great challenge, especially in a complex material system. Here, we propose a material design strategy to simultaneously optimize multiple targeted pro...

Pei Liu, Haiyou Huang, Stoichko Antonov, Cheng Wen… in npj Computational Materials (2020)

Article

Cyclic Properties of Superelasticity in Cu–Al–Mn Single-Crystalline Sheets with Bainite Precipitates

Microstructure, Vickers hardness and cyclic superelastic properties at room temperature were examined for Cu-Al-Mn single-crystalline sheets aged at 200 °C for various time periods. The bainite plates started ...

Ryosuke Kainuma, Yohei Yoshinaka, Toshihiro Omori in Shape Memory and Superelasticity (2018)

Article

A Generalized Approach Obeying the Third Law of Thermodynamics for the Expression of Lattice Stability and Compound Energy: A Case Study of Unary Aluminum

Recently, Hillert and Selleby proposed a simple method for expression of the lattice stability or Gibbs energy of formation that does not violate the third law of thermodynamics. This method describes the deri...

Toshihiro Omori, Sedigheh Bigdeli, Huahai Mao in Journal of Phase Equilibria and Diffusion (2018)

Article

Cryogenic superelasticity with large elastocaloric effect

Shape-memory alloys suitable for low-temperature environments are crucially lacking despite their potential applications for aerospace engineering, superconducting technologies, and liquefied-gas-storage techn...

Kodai Niitsu, Yuta Kimura, Toshihiro Omori, Ryosuke Kainuma in NPG Asia Materials (2018)

Article

Martensitic Transformation and Superelasticity in Fe–Mn–Al-Based Shape Memory Alloys

Ferrous shape memory alloys showing superelasticity have recently been obtained in two alloy systems in the 2010s. One is Fe–Mn–Al–Ni, which undergoes martensitic transformation (MT) between the α (bcc) parent...

Toshihiro Omori, Ryosuke Kainuma in Shape Memory and Superelasticity (2017)

Article

Ultra-large single crystals by abnormal grain growth

Producing a single crystal is expensive because of low mass productivity. Therefore, many metallic materials are being used in polycrystalline form, even though material properties are superior in a single cry...

Tomoe Kusama, Toshihiro Omori, Takashi Saito, Sumio Kise… in Nature Communications (2017)

Article

Magnetic Properties and Phase Diagram of Ni₅₀Mn \(_{50-x}\) Ga \(_{x/2}\) In \(_{x/2}\) Magnetic Shape Memory Alloys

Ni₅₀Mn_50-x Ga _x/2In _x/2 magnetic shape memory alloys were systematically prepared, and the magnetic properties as well as the phase di...

**ao Xu, Yasuki Yoshida, Toshihiro Omori… in Shape Memory and Superelasticity (2016)

Article

Microstructure and Mechanical Properties in B-Doped Fe-31.9Ni-9.6Co-4.7Ti Alloys

Effects of the addition of boron on grain boundary precipitation, martensitic transformation temperatures, and mechanical properties were investigated for Fe-31.9Ni-9.6Co-4.7Ti alloy sheets. Grain boundary pre...

Doyup Lee, Toshihiro Omori, Ryosuke Kainuma in Shape Memory and Superelasticity (2016)

Article

Response to the Letter to the Editor "Hemodynamics in the Microcirculation" by A. G. Koutsiaris

Toshihiro Omori, Yohsuke Imai, Kenji Kikuchi… in Annals of Biomedical Engineering (2016)

Article

A jum** shape memory alloy under heat

Shape memory alloys are typical temperature-sensitive metallic functional materials due to superelasticity and shape recovery characteristics. The conventional shape memory effect involves the formation and de...

Shuiyuan Yang, Toshihiro Omori, Cui** Wang, Yong Liu… in Scientific Reports (2016)