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Shigenobu OGATA

Professor

Osaka University

Japan

Research Interests

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Professors in Japan Professors in Condensed Matter Physics Condensed Matter Physics professors in Japan

About

Shigenobu Ogata is a Professor at Osaka University in Japan. His research encompasses a range of areas including dislocation plasticity, machine learning applications in material sorting, and the statistical mechanics of amorphous materials. Recent publications highlight his work on hardening mechanisms in irradiated zirconium and ultrafine grained magnesium, as well as advanced techniques for analyzing dislocation networks and crack propagation in various materials.

Articles (41)

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Collaborators (16)

R. L Narayan

Assistant Professor

Indian Institute of Technology, Delhi

Shigenobu OGATA

Research Interests

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About

Articles (41)

From loop emission to dislocation jamming: Contrasting nanoindentation-induced plasticity in wurtzite ZnO and GaN

Formation of a one-dimensional dislocation loop array in wurtzite zinc oxide at ambient temperature

The effect of composition and cooling rate on the microstructure and mechanical properties of Ti-Ta alloys: a high-throughput study performed using the in situ compositional gradation via laser powder bed fusion

Negative strain-rate sensitivity in metallic glasses driven by rejuvenation–relaxation competition: Kinetic Monte Carlo simulations and a minimal effective model

Dual role of Nb in defect-mediated strength and ductility of γ-TiAl alloys

Capturing the transition from single- to multiple-dislocation nucleation at grain boundaries by exploration-driven accelerated molecular dynamics

Wide-range predictions of hydrogen-dependent vacancy diffusion in nickel from a near-DFT-accurate machine-learning potential

Atomistic mechanisms of carbon-induced strengthening and oriented precipitation in TiAl-Nb-C alloys

Entropy-biased vacancy equilibria in multi-principal-element alloys

Quantitative composition‑annealing temperature map of stacking‑fault energy in CoCrNi medium‑entropy alloys unveiled by first‑principles neural‑network potentials

Formation of Small Prismatic Dislocation Loops via Double Cross-slip of Screw Dislocations in Iron: Dynamic Loop-type Identification Using <i>in situ</i> Transmission Electron Microscopy

Kinked basal dislocation loops for anomalous annealing hardening in irradiated zirconium

Statistical structural mechanism for shear localization in amorphous materials

Insights into a new overclustering technique using machine learning for a self-selecting bin-restricted colour sorting setup for light red meranti (Rubroshorea spp.)

Extraordinary hardening-by-annealing in bulk ultrafine grained magnesium with ultra-low yttrium addition

Temperature and loading-rate dependent critical stress intensity factor of dislocation nucleation from crack tip: Atomistic insights into cracking at slant twin boundaries in nano-twinned TiAl alloys

‘Tracheid effect’ light scattering response of common commercial species of Malaysia using red laser (650 nm) for grain angle detection, and machine learning based performance prediction

Dislocation plasticity in c$c$‐axis nanopillar compression of wurtzite ceramics: A study using neural network potentials

Ab initio path-integral simulations of hydrogen-isotope diffusion in face-centred cubic metals

Formation of three-dimensional dislocation networks in α-iron twist grain boundaries: Insights from first-principles neural network interatomic potentials

Correction: Machine learning based density estimation of light red meranti (Shorea spp.): a segmented approach to multiple regression of self-organising maps colour clusters using custom made ‘KayuSort’ colour sorting software

Mechanism of solute hardening and dislocation debris-mediated ductilization in Nb-Si alloy

Disconnection units of twinning in body-centered-cubic metals

A new criterion for formation capability of annealing twin in face-centered cubic metals/alloys

Atomistic simulations of the frictional properties of 2D materials: a review

Tunable interstitial and vacancy diffusivity by chemical ordering control in CrCoNi medium-entropy alloy

A deep-neural network potential to study transformation-induced plasticity in zirconia

Atomistic modeling of nucleation kinetics of Guinier–Preston zones in Al–Cu alloys: Two formation scenarios and prediction of the time-temperature-transformation diagram

Shuffling pathway of anti-twinning in body-centered-cubic metals

Variation of first pop-in loads in nanoindentation to detect chemical short-range ordering in the equiatomic Cr-Co-Ni medium-entropy alloy

Off-center positioning of helium in a vacancy in metals

Insights into factors that affect non-Arrhenius migration of a simulated incoherent Σ3 grain boundary

Asymmetry in core structure and mobility of basal dislocations in a Ti3SiC2 MAX phase: An atomistic study with machine-learned force fields

Origin of the nucleation preference of coherent and semicoherent nanoprecipitates in Al–Cu alloys based on atomistically informed classical nucleation theory

Shuffling pathway of anti-twinning in body-centered-cubic metals

Chemical domain structure and its formation kinetics in CrCoNi medium-entropy alloy

Friedel Oscillations Induce Hydrogen Accumulation near the Σ3 (111) Twin Boundaries in γ‐Fe

Rediscovery of Hall-Petch strengthening in bulk ultrafine grained pure Mg at cryogenic temperature: A combined in-situ neutron diffraction and electron microscopy study

Core structure and Peierls barrier of basal edge dislocations in Ti3AlC2 MAX phase

Ultralong one-dimensional plastic zone created in aluminum underneath a nanoscale indent

General-purpose neural network interatomic potential for the α -iron and hydrogen binary system: Toward atomic-scale understanding of hydrogen embrittlement

Collaborators (16)

R. L Narayan

Tomoaki Niiyama

Shihao Zhang

Kazuto Arakawa

Jun-Ping Du

Eric Homer

Atsutomo Nakamura

Hajime Kimizuka

Shuhei Shinzato

Akio Ishii

Jianbo LIN

YAN LI

Nobuhiro Tsuji

Irene J. Beyerlein

Yin Zhang

Le Li

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