The obsidian dating method converts the quantity of diffused molecular water within a near‐ surface hydration layer to elapsed time using an experimentally derived diffusion coefficient …
Diffusion of hydrogen (H) in silicate glasses plays a critical role in many applications because already at small concentrations the presence of H and its mobility have significant …
D Yamamoto, M Kuroda, S Tachibana… - The Astrophysical …, 2018 - iopscience.iop.org
Meteoritic evidence suggests that oxygen isotopic exchange between 16 O-rich amorphous silicate dust and 16 O-poor water vapor occurred in the early solar system. In this study, we …
D Yamamoto, S Tachibana - ACS Earth and Space Chemistry, 2018 - ACS Publications
Amorphous silicate dust grains, dominant solid components in the interstellar medium, are converted into crystalline silicate dust through thermal annealing in protoplanetary disks …
Diffusion in solids is a slow process that dictates rate-limiting processes in key chemical reactions. Unlike crystalline solids that offer well-defined diffusion pathways, the lack of …
Molecular structures of siloxane materials should be highly controlled for achieving advanced functionalities. However, it is still difficult to precisely control the structure of …
S Arakawa, D Yamamoto, L Ishizaki… - The Astrophysical …, 2024 - iopscience.iop.org
Meteorites and their components exhibit a diverse range of oxygen isotope compositions, and the isotopic exchange timescale between dust grains and ambient gas is a key …
D Yamamoto, S Tachibana, N Kawasaki… - … & Planetary Science, 2020 - Wiley Online Library
Oxygen isotope exchange experiments between tens of nanometer‐sized amorphous enstatite grains and water vapor were carried out under a condition of protoplanetary disk …