スピンコントラスト変調中性子小角散乱法と反射率法を用いた複合材料のナノ構造解析

熊田 高之

水素科学技術の将来のために, 3(1), p.2 - 6, 2025/10

Spin-contrast variation (SCV) is a technique that exploits the strong dependence of the coherent scattering length of thermal and cold neutrons from protons on their relative spin orientation. By analyzing the proton-polarization dependent scattering of polarized neutrons, SCV enables the elucidation of the structure of individual components as well as the degree of interpenetration between them in composite materials. Recently, we applied SCV small-angle neutron scattering (SCV-SANS) to determine the nanostructure of ice crystals formed in rapidly frozen sugar solutions. We also employed SCV neutron reflectivity (SCV-NR) to reveal the interpenetration between a silane coupling agent layer on inorganic substrates and rubber, which plays a crucial role in their adhesion.