MAT Collaboration Meeting 2026

Gallium oxide (Ga₂O₃) is a compelling member of the polymorphic oxide family, where ion beam modification offers a powerful route to tailor material structure and functionality. While the creation of defects in this crystal through elastic energy transfer (Sₙ) is well established and drives, for example, monoclinic‑to‑orthorhombic transformations, the role of inelastic energy loss (Sₑ) remains...

β-Ga2O3 has attracted growing attention as a new wide-bandgap semiconductor material, because it has an extremely high bandgap energy of 4.8–4.9 eV and an expected high breakdown field of 8 MV/cm. Understanding irradiation effects on β-Ga2O3 materials is essential to evaluate the electrical performance and reliability of devices in harsh radiation environments. The ion tracks and the thermal...

Beam nanolattice is a new class of mechanical metamaterials with characteristic sizes on the order of hundreds of nanometers. Due to extremely special size effects, structural characteristics and material selection, the mechanical properties of this type of porous materials can simultaneously achieve high strength and high strain with lighter weight, which is expected to bring revolutionary...

Swift-heavy-ion irradiation experiments under high static pressures in diamond anvil cells (DACs) have shown that ion-induced processes can drastically influence the pressure-dependent phase behavior of materials. For example, irradiation can transform zirconia (ZrO$_2$) into the orthorhombic-II phase or induce the formation of the high-pressure zircon (ZrSiO$_4$) polymorph reidite at...

The rainbow effect is a fundamental phenomenon in any scattering theory of waves and particles, describing the accumulation of trajectories at characteristic angles due to extrema of the deflection function. In particular, the atomic rainbow effect – arising in semiclassical particle scattering due to singularities in the classical differential cross section – provides valuable information...

The Diamond-window-Paris–Edinburgh Cell (D-PEC) system is designed to combine a Paris–Edinburgh press with large-volume diamond-anvil chambers for experiments under simultaneous high-pressure and high-temperature conditions, up to 10 GPa and 1000 K. The setup enables optical access for in-situ measurements and observations. Compared with conventional diamond-anvil cell experiments, the various...

Nanostructured materials with hierarchical architectures are of increasing interest due to their tunable surface properties and enhanced functional performance in catalysis, sensing, and energy applications. For electrochemical applications, in particular, maximizing the accessible surface area while maintaining efficient transport and electrical connectivity is a key challenge. Hierarchical...

Summary: Solid-state nanochannels offer unique opportunities for miniaturized biosensing by coupling molecular recognition with iontronic signal transduction. In enzyme-functionalized nanochannels, biochemical reactions can locally modify the chemical environment at the channel interface, thereby altering the surface charge and ionic transport. Here, we experimentally investigate the...