Kochi University of Technology

Ultrathin Al-Driven Polarity Engineering in Polycrystalline ZnO Thin Films on Flexible Glass for Sign-Reversible Piezoresistive and Photoconductive Responses

Flexible transparent devices require materials whose mechanical and optoelectronic responses can be tuned in a coordinated manner through interface design. This study shows that an ultrathin Al underlayer enables crystallographic polarity switching in c-axis-oriented polycrystall...

BKT-like Correlation Scaling and Twist Responses in a One-Dimensional Fractional U(1) Ginzburg–Landau Model

We study a one-dimensional fractional U(1) Ginzburg–Landau model whose quadratic part has Fourier multiplier |k|σ, focusing on the marginal case σ=1. This dispersion yields logarithmic spin-wave fluctuations, suggesting BKT-like behavior despite the one-dimensional setting. We sa...

Deep-learning-based fMRI decoding of real-world size for hand-held objects

Real-world object size is a fundamental dimension of visual cognition, supporting effective interaction with the environment and object manipulation. However, neural mechanisms underlying size representation have largely been inferred from extreme size comparisons, leaving the ne...

From Simplicity to Complexity: Substituent‐Controlled Z ′ Multiplicity as a Design Principle for Thermally Robust Yet Programmable Anisotropic Expansion

Anisotropic thermal expansion in molecular crystals has predominantly been reported for low-Z' systems (Z' ≤ 2), in which only a few independent molecules occupy the asymmetric unit. In such crystals, thermal expansion is often interpreted using simplified models based on rigid m...