Effective reaction temperatures of irreversible dust chemical reactions in a protoplanetary disk

L Ishizaki, S Tachibana, T Okamoto… - The Astrophysical …, 2023 - iopscience.iop.org
Dust particles in protoplanetary disks experience various chemical reactions under different
physicochemical conditions through their accretion and diffusion, which results in the radial …

Obsidian hydration dating by infrared transmission spectroscopy

F Franchetti, G Neme, A Gil, ML Salgan… - …, 2024 - Wiley Online Library
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 …

[HTML][HTML] Diffusion of H-bearing species in anorthite-diopside glass below and across the glass transition

T Bissbort, HW Becker, S Chakraborty - Geochimica et Cosmochimica Acta, 2024 - Elsevier
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 …

Oxygen isotopic exchange between amorphous silicate and water vapor and its implications for oxygen isotopic evolution in the early solar system

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 …

Water vapor pressure dependence of crystallization kinetics of amorphous forsterite

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 …

Molecular Autonomous Pathfinder Using Deep Reinforcement Learning

K Nomura, A Mishra, T Sang, RK Kalia… - The Journal of …, 2024 - ACS Publications
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 …

Reactivity of silanol group on siloxane oligomers for designing molecular structure and surface wettability

D Kino, K Okada, Y Tokudome, M Takahashi… - Journal of Sol-Gel …, 2021 - Springer
Molecular structures of siloxane materials should be highly controlled for achieving
advanced functionalities. However, it is still difficult to precisely control the structure of …

Oxygen Isotope Exchange between Dust Aggregates and Ambient Nebular Gas

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 …

Survivability of presolar oxygen isotopic signature of amorphous silicate dust in the protosolar disk

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 …

玻璃与水的相互作用过程和机理探索.

魏子雅, 顾少轩, 王晓伟, 邓路… - Bulletin of the Chinese …, 2022 - search.ebscohost.com
玻璃经常在溶液或者潮湿环境下使用, 水的侵蚀会影响玻璃的物理和化学性质,
甚至导致玻璃失效. 近年来, 通过采用多尺度计算机模拟方法, 对简单玻璃体系与水相互作用过程 …