Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Takuma HORI"'
Publikováno v:
AIP Advances, Vol 14, Iss 4, Pp 045332-045332-8 (2024)
Phonon transport simulations are conducted to unveil the design of nanostructured thin films with the lowest thermal conductivity for enhancing thermoelectric performance. An efficient and effective optimization method that utilizes simulated anneali
Externí odkaz:
https://doaj.org/article/a50cc9d177dd4b118ada37c1ac8da1a9
Autor:
Takuma Hori
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract The method to optimize nanostructures of silicon thin films as thermoelectric materials is developed. The simulated annealing method is utilized for predicting the optimized structure. The mean free path and thermal conductivity of thin film
Externí odkaz:
https://doaj.org/article/fa1a897f237345d49b460e8277d9770c
Autor:
Takuma Hori, Junichiro Shiomi
Publikováno v:
Science and Technology of Advanced Materials, Vol 20, Iss 1, Pp 10-25 (2019)
The figure of merit of thermoelectric materials can be increased by suppressing the lattice thermal conductivity without degrading electrical properties. Phonons are the carriers for lattice thermal conduction, and their transport can be impeded by n
Externí odkaz:
https://doaj.org/article/e9547ca774ca4fd48078831bed0f45d1
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 865, Pp 18-00193-18-00193 (2018)
We constructed a coarse-grained (CG) water model based on non-Markovian dissipative particle dynamics (NMDPD) taking into account memory effects. The NMDPD equation of motion was derived from a generalized Langevin equation formulated via the Mori–
Externí odkaz:
https://doaj.org/article/8a6f28b681ba4284ad144a19a1dbfde7
Autor:
Takuma Hori
Publikováno v:
Applied Physics Express. 15:125002
A semi-analytical method is developed to predict the phonon-boundary scattering mean free path (MFP) in nanostructured materials. Based on the segmentation of phonon displacements for each phonon collision event, the proposed solution enables us to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::416c615c9cfb7afc97f56c7a2767b11c
https://doi.org/10.35848/1882-0786/aca0db
https://doi.org/10.35848/1882-0786/aca0db
Autor:
Takuma Hori, Chris Dames
Publikováno v:
Journal of Applied Physics. 132:135104
In this study, a numerical simulation method and analytical models for predicting the boundary scattering mean free path (MFP) of phonons in polycrystalline nanostructures are developed. The grain morphologies are assumed to be approximately equiaxed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0898969c45a6d728cde8f214e9130e0d
https://doi.org/10.1063/5.0103562
https://doi.org/10.1063/5.0103562
Autor:
Makoto Kashiwagi, Lei Feng, Takuma Shiga, Suto Yamasaka, Junichiro Shiomi, Yoshiaki Nakamura, Takuma Hori, Takafumi Oyake
Publikováno v:
Physical Review B. 104
Temperature-dependent thermal conductivity of epitaxial silicon (Si)/ultrathin silica multilayers film with epitaxial germanium (Ge) nanodot inclusions is measured over the range of temperature from 50 K to room temperature using time-domain thermore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55f884a894ca6a361c3a12f4affa9dfc
https://doi.org/10.1103/physrevb.104.054301
https://doi.org/10.1103/physrevb.104.054301
Autor:
Sou Sugiyama, Yuta Yoshimoto, Takuma Hori, Shigeo Maruyama, Koichi Isomura, Shu Takagi, Taiki Inoue, Ikuya Kinefuchi, Shohei Chiashi, Hua An
Publikováno v:
Diamond and Related Materials. 95:115-120
We investigated dynamical processes of capillary-mediated deformation of vertically aligned single-walled carbon nanotubes (VA-SWCNTs) via in situ observation of their wetting and dewetting behaviors using an environmental scanning electron microscop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fe507b15d7dcd3d14b8998b65fdb2ac
https://doi.org/10.1016/j.diamond.2019.04.011
https://doi.org/10.1016/j.diamond.2019.04.011
Autor:
Hideki Takeuchi, Takuya Mabuchi, Takashi Tokumasu, Yuta Yoshimoto, Takuma Hori, Ikuya Kinefuchi, Masataka Nakauchi
Publikováno v:
The Journal of Physical Chemistry C. 123:7125-7133
The scattering dynamics of oxygen molecules on perfluorosulfonic acid (PFSA) ionomer thin films was investigated using molecular dynamic simulations. We constructed PFSA ionomer thin films with different water contents on a carbon surface at 300 K an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aabb919433dba49396ef30ef61f543fd
https://doi.org/10.1021/acs.jpcc.8b11475
https://doi.org/10.1021/acs.jpcc.8b11475
P-TRANS: A Monte Carlo ray-tracing software to simulate phonon transport in arbitrary nanostructures
Publikováno v:
Computer Physics Communications. 276:108361
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74cd85742131e4edc5c38c7e0c5ca470
https://doi.org/10.1016/j.cpc.2022.108361
https://doi.org/10.1016/j.cpc.2022.108361